最新刊期
卷 31 ， 期 6 ， 2003
- 摘要：Due to the heavy congestion in HF bands,HF radars are restricted to operating within very narrow bands,thus obtain a poor range resolution.A quasi-random step frequency signal with discontinuous bands is presented to improve the system bandwidth while avoiding the heavy interference bands.A two-dimension signal processing scheme for this signal is proposed on the basis of signal analysis.Simulation results demonstrate that the scheme could decouple the range-Doppler ambiguity,thus successfully realize the range-Doppler resolution and effectively suppress maximal sidelobe.关键词：random step frequencies;sidelobes suppression;signal processing2|1351|6更新时间：2025-07-16
- 摘要：The problem of optimal beam position is studied in detail with connection to the design of the multi-functional Phased Array Radar (PAR).An iterative algorithm is derived to solve the optimal beam position sequence.Considering the practical constraint of PAR antenna's granularity of beam,a measuring method on the optimality of the beam position sequence is presented and applied to the analysis and evaluation of the beam position sequence of the digital phasing PAR.关键词：phased array radar;antenna;beam position;granularity of beam3|4688|8更新时间：2025-07-16
- 摘要：A line extraction algorithm for synthetic aperture radar (SAR) image is presented.The algorithm is designed for the statistical characteristics of the speckle in SAR image.Three steps are involved.Firstly,a new edge detector,which combines the Canny operator and Ratio operator,is used to get the edge points and their directions,then the edge points are grouped based on the edge direction consistency to form the initial lines.Finally,the broken lines due to speckle noise are connected by the high level grouping.The proposed new edge operator is CFAR and prevents the line from cleaving.The high level grouping step analyses the initial lines,finds out the possible areas for expanding lines,and verifies the possible areas by statistical hypothesis determination.The line extraction algorithm is tested on the X-band airborne SAR images.The extracted line graph can be used for SAR image vectorization and comprehension etc.关键词：SAR;image processing;speckle;line extraction;edge detection;high level grouping2|1880|19更新时间：2025-07-16
- 摘要：We present a parallel algorithm for the FDTD method on a distributed network by using the message passing module.The computation space is divided into some sub-domains.Then the fields inside each sub-domain are computed on an individual processor with a small amount of data being communicated from neighboring sub-domains.The special boundaries in the FDTD domain,such as absorbing boundaries,connective boundaries and near-to-far fields transform boundaries are dealt with particularly.In this paper,a parallel programming console of Parallel Virtual Machine (PVM) is used,which denotes a message passing library and a daemon to carry out the parallel programs.关键词：network parallel computing;finite-difference time-domain (FDTD) method;domain decomposition technique;electromagnetic scattering2|1748|15更新时间：2025-07-16
- 摘要：The 1/f family of fractal processes exists widely in various physical and social phenomena and is increasingly appealing to researcher on signal detection and estimation,signal processing and image processing.Fractional Brownian motion is a convenient model for this kind of process.Wavelet transform is a useful tool to analyze fractal signal by its multi-resolution analysis capability.After analyzing the correlation structure of 2-D fBm signal's wavelet decomposition,this paper proposed a method to synthesize 2-D fBm and showed its application on producing harmonious patterns.关键词：1/f process;fractional Brownian motion;wavelet transform2|879|3更新时间：2025-07-16
- 摘要：New applications of Doppler frequency have been found with Chirp Scaling algorithm(CSA)in squint SAR imaging.Considering the change of azimuth sample,the pulse repeat frequency difference in squint SAR data processing,and the Doppler frequency varing with different slant range targets,we carefully analyse the instantaneous azimuth frequency,the instantaneous Doppler frequency component of the azimuth frequency and the impact of range chirp on azimuth frequency,from the mathematical model of SAR echo signal.It explains that we should properly select Doppler frequency in Chirp Scaling algorithm for correct SAR imaging.The results of point target simulation experiments show that our method is reasonable for squint SAR.It can effectively complete range compression and azimuth focusing,and can improve images' quality.关键词：PRF;Doppler frequency;CS algorithm;range chirp rate;SAR2|981|3更新时间：2025-07-16
- 摘要：The multiplicative nature of the speckle noise in SAR images has been a big problem in SAR image segmentation.The maximum likelihood region merging segmentation algorithm is studied and employed.An adaptive edge detect procedure is introduced into the algorithm here and better segmentation performance of the improved algorithm with the adaptive edge detect is involved.A simulated annealing segmentation algorithm with excellent performance is studied and introduced here,and a hybrid algorithm which is practical in SAR image segmentation combines simulated annealing algorithm and maximum likelihood algorithm together to achieve a similar performance with the simulated annealing algorithm is also proposed.Segmentation comparison between these algorithms is given as well as instructions of how to select the segmentation algorithms in practice.关键词：SAR;segmentation;adaptive;simulated annealing;maximum likelihood2|1189|3更新时间：2025-07-16
- 摘要：As an efficient methodology to design biorthogonal filterbanks and wavelets,the lifting scheme has been widely applied to many fields such as construction of wavelets and design of adaptive subband coders.Utilizing the three-band lifting scheme,the paper designs a novel family of biorthogonal interpolating complex wavelets with stopband zero suppression.The stopband zero suppression is a stricter design constraint than the vanishing moments,and can more effectively manipulate the stopband characteristics of filters.Unlike the traditional design,complex filterbanks and wavelets designed provide the ability to partition the positive and negative frequency components into different channels/subbands.关键词：three-band lifting scheme;three-band biorthogonal interpolating complex wavelets;stopband zero suppression2|795|0更新时间：2025-07-16
- 摘要：Only those systems which support multiple security policies can meet practical security requirements.The role-based access control (RBAC) is a new policy-neutral model,which has enforced multiple security policies.The domain and type enforcement security policy fully reflects the security principles of least privilege and separation of duties.According to RBAC and DTE,the role-based domain and type enforcement access control (RDTEAC) model is presented.RDTEAC not only inherits the advantage of RBAC,but also facilitates implementation of DTE security policy.A Linux prototype of RDTEAC was developed.2|1018|2更新时间：2025-07-16
- 摘要：On the basis of analyzing the mathematic model of the multi-dimension assignment problem,we propose a "pruning" algorithm of multi-dimension assignment problem by transforming the solution matrix using corresponding cost matrix,and give its theory proving analysis.And next,we analyze the mechanism of the "pruning" algorithm,describe its solving process and apply it into passive target detection tracking.Moreover,the algorithm can be applied to every-dimension optimal assignment problem and has not special restriction of the number of passive target detection equipment.The algorithm provides a new effective way for passive target detection technology.关键词：multi-dimension assignment;pruning algorithm;passive target detection;tracking;solution matrix2|1301|7更新时间：2025-07-16
- 摘要：In order to ensure the adaptive and optimal processing of modern radar in complex and time-varying clutter,it is significant to recognize the classification of the clutter in real time.Based on the classification space formed by three typical clutter amplitude PDFs,the authors present two correlated clutter recognition methods in this paper:one is characterized by the high order statistics combination vector,and another uses a so-called α-trancation set threshold.Monte-carlo experiments are made for recognition simulations,and a comparison of the two methods is also made to get some useful results.关键词：correlated clutter;statistical characteristic;simulation;clutter recognition2|1156|2更新时间：2025-07-16
- 摘要：A new method which can be easily implemented on PC is presented for analyzing the characteristics of cylindrically conformal microstrip antennas.Based on the method of moments (MOM),the fast oscillatory and slowly convergent parts of the generalized impedance matrix and voltage vector elements are extracted,then these elements are cast into closed-forms by using the nonlinear approximation.By using this method,the computational efficiency is improved dramatically.Compared with the published results in the corresponding references,the correctness and high efficiency of this method are verified.关键词：conformal microstrip antennas;method of moments;nonlinear approximation;input impedance;radiation pattern2|1338|1更新时间：2025-07-16
- 摘要：A modified locally conformal Finite-Difference Time-Domain technique (MLC-FDTD) is presented in this paper,which is used to analyze the broadwall radiating slots in a finite wall thickness waveguide,including the longitudinal slot and the compound inclined slot.MLC-FDTD not only removes the instability of the original locally conformal FDTD algorithm,but also improves the computational accuracy by partly modifying E-filed update equations according to the complexity of the slot fringe fields.In this paper,we make a direct analysis of the bulletheaded slots by using MLC-FDTD,and give the equivalent errors of two kinds of equivalent methods frequently used in the engineering design,which are the equal-area and the equal-perimeter transformations from the squareheaded to bulletheaded slot.The result shows that the equal-area transformation is more accurate.关键词：MLC-FDTD;slot antenna;equivalent transformation error2|1614|5更新时间：2025-07-16
- 摘要：The field matching technique is applied to do the theoretical analysis and numerical simulation of the buncher cavity in gyroklystron.The influence of side apertures on resonance characteristic and the way that quality factor is decreased by adding absorber have been discussed.The simulation results of buncher cavity with low quality factor in a 34GHz,TE01 mode gyroklystron are presented.The numerical calculation shows that the diameter of aperture has obvious influence on the resonance characteristic and field distribution of stationary wave in the cavity,and the quality factor decreases rapidly as the thickness of absorber increases.When the structure of cavity is correct,the absorbing medium and its thickness are selected properly;the designed parameters can be obtained.关键词：gyroklystron;high-power amplifier;buncher cavity;field matching;microwave2|966|12更新时间：2025-07-16
- 摘要：Using canonical transform,a decoupled filter,which is analytic form,is proposed based on converted measurement Kalman filter(CMKF) for target tracking when target positions are measured in polar coordinates.Initial values for CMKF and decoupled CMKF are also investigated.Simulation results show its validity.关键词：decoupled filter;converted measurement Kalman filter(CMKF);target tracking2|1775|7更新时间：2025-07-16
- 摘要：Due to limitation of computer's memory and speed,many traditional numerical computational electromagnetic method such as FDTD meets difficulties in solving electrical-large objects problems.A pseudospectral time-domain(PSTD) algorithm is developed recently to overcome limitations in the conventional solution methods for Maxwell's equations.This technique uses the fast Fourier transform(FFT) algorithm for the spatial derivatives and uses the perfectly matched layer(PML) to absorb exocentric wave and eliminate the wraparound effect.Because the Fourier transform has an infinite order of accuracy,only two cells per wavelength are required,compared to 10~16 cells per wavelength required by the FDTD method for the same accuracy.In this paper,the PSTD algorithm is introduced to solve electrical-large objects problems.A perfectly matched layer(PML)for the absorption of electromagnetic waves in this algorithm is also analyzed.关键词：pseudospectral time-domain;FDTD;perfectly matched layer;FFT2|1249|2更新时间：2025-07-16
- 摘要：In the presence of circular complex-valued multiplicative and additive noise,we proposed a crosscorrelation estimator for the 2-D direction of arrivals of narrowband source impinging on a uniform circular arrays (UCAs).Further,we analyzed the statistics performance of the estimator and gave the selection criterion of the optimal parameters.This estimator can efficiently eliminate the multiplicative and additive noise in the source and retain the better performance of the UCAs.It is provided with less computational load.Numerical simulations validated the theoretical results.关键词：crosscorrelation estimation;2-D direction of arrival;UCAs;multiplicative noise2|1261|7更新时间：2025-07-16
- 摘要：It presents a zerotree coding method for gray images that uses no lists during encoding and decoding,permitting the omission of the lists requirement in Said and Pearlman's Set Partitioning In Hierarchial Trees (SPIHT) algorithm.Without lists,the memory requirement is reduced significantly,and the improved listless zerotree coding method enhances the coding speed by improving the zerotree coding process,and reduces the complexity in the encoding and decoding procedure.Experimental results show that the improved LZC codec increases the ratio of compression ratio at the same PSNR,so improved LZC method is an efficient method for image coding.关键词：wavelet transform;zerotree coding;SPIHT;listless2|1362|1更新时间：2025-07-16
- 摘要：Fast multipole method and multi-level fast multipole algorithm are effective methods solving the electromagnetic scattering from electrically complex objects,but the serial methods are difficult to solve large-scale electromagnetic scattering from electrically large complex objects.So parallel technology is applied to solving electromagnetic radiation from such objects on network of workstation system.Results show that our method is more effective and practical than other domestic and international corresponding methods,with the parallel efficiency reaching more than 54%.This method has solved the large-scale electromagnetic scattering from electrically large complex objects that serial method can not solve.It takes thirty-two hours to compute radar cross section of 160,000 unknowns on a network of workstation system which comprises four DEC workstations.关键词：parallel processing;parallel efficiency;fast multipole method;multi-level fast multipole algorithm2|1823|14更新时间：2025-07-16
- 摘要：Pitch period is a key parameter in speech compression,synthesis and recognition.The well-known AMDF is often used to determine this parameter.But it is easy to make the estimated pitch doubled.With the problem,this paper analyses the features of the AMDF and its disavantages that occur in pitch detection.And a new function,Circular AMDF(CAMDF),is proposed.The CAMDF conquers the defect of the AMDF effectively,and simplifies the process of pitch detection.With the properties of CAMDF,a new pitch detection algorithm based on CAMDF is described.The algorithm not only simplifies the pitch detection,but also effciently decreases the estimation errors and improves the precision of estimated values.Lots of experiment show that the performance of the algorithm is better than other methods that are based on the AMDF or the LVAMDF.关键词：average magnitude difference function(AMDF);circular AMDF;pitch period estimation2|1327|17更新时间：2025-07-16
- 摘要：It has been widely accepted that auctioning is a proper tool to manage scare network resources.Previous works focus on Vickrey auction which is incentively compatible.The most representative Vickrey auction-based mechanisms (smart market model and progressive second price auction) are introduced and their faults in scalability and engineering efficiency are also pointed out.Then the paper presents a new resource allocation algorithm based on uniform-price auction,which is stateless and efficient in engineering,and proves its incentive compatibility in the network environment.Finally,simulation experiments with NS-2 (Network Simulator) are conducted to evaluate performances of the proposed algorithm.关键词：network resource allocation;usage-based pricing;vickrey auction;smart market model;progressive second price auction;uniform-price auction2|1302|10更新时间：2025-07-16
- 摘要：A new content-based color image retrieval method is proposed,in which both the color content and the spatial relationship of image have been taken into account.In order to represent the spatial distribution information of image,a disorder matrix,which has the invariance to the rotation and translation of the image content,has been designed.During the actual matching stage,the global color histogram intersection is used firstly to generate candidate image list.Then the disorder matrix representing the spatial information of the image is employed to refine the retrieval result by deleting the dissimilar images from the candidate list.Experimental results with various types of images show that the proposed method not only achieves a high image retrieval performance but also improves the retrieval precision.Furthermore,it is robust even with some rotation and translation cases.关键词：similar retrieval;color image;disorder matrix;content-based image retrieval(CBIR)2|1285|1更新时间：2025-07-16
- 摘要：In the component-based software development method,component model is the basis and domain variability feature is the critical factor.From this,on the basis of the existing component model,this paper proposed a new concept,abstract component concept,which can be used to express a set of components that have domain commonness and domain variability.The corresponding techniques such as component description language,component composition and component management was also discussed.This variability-supported component model was called JBCOM/E,which had the ability to describe domain variability.At the end,a case-study example,POS Domain Software Development Platform,was demonstrated.It can be used to make new POS systems quickly through the above techniques.Sum up the above,aimed at domain variability,this paper did research on variability-supported component model,component composition and component management.It provides a more consistent and integrated technical basis for component-based software development method.关键词：software reuse;software component;domain engineering;component model2|1029|3更新时间：2025-07-16
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Study on the Periodic Signature Modulated by Rotating Structure of Aircraft in the Air-Defense Radar
摘要：This paper reveals the periodic signature modulated by rotating structure of aircrafts in the air-defense radar echoes,and presents some methods of analysis and extraction of the periodic signature,based on induction mechanism,parametric model of modulation and echo characteristics.The stability and reliability of the periodic signature in the actual echoes is analyzed under different conditions including aircraft configuration and orientation,radar parameters and operation.The probability of identification of propellers based on the periodic signature is discussed.The analyzed results demonstrate that the periodic signature is reliably and steadily extracted from the air-defense radar echoes using the proposed methods,and can be used for identification of propellers.关键词：air-defense radar;periodic signature of modulation;analysis and extraction of features;recognition of aircrafts2|1373|0更新时间：2025-07-16 - 摘要：The Memory-base nonlinear prediction-based NP-CFAR processing is a typical and advanced method for target detection in the chaotic sea clutter.In consideration of the time-varying instability of the power and character of the sea clutter,authors present a modified method with the rotation hyper-box classification for detection,and use the simpler box-dimension character extraction for preprocessing to reduce the computation load.The simulation experiments prove the efficiency of those modifications.关键词：chaotic;rotation hyper-box classification (RHBC);box-dimension;detection2|1311|5更新时间：2025-07-16
- 摘要：Ill-conditioned problem in reconstruction of layered medium inside coaxial line is considered.The cause of appearance and aggravation of ill-conditionedness is discussed and it is presented that compared with multi-impedance measurements,multi-frequencies measurements are easier to get more effective information so as to ensure the uniqueness of reconstruction solution and weaken the ill-conditionedness.Using Levenberg-Marquardt algorithm,the numerical simulation results confirm this conclusion which can direct the practical reconstruction.关键词：layered medium;reconstruction;Ill-conditioned2|1493|1更新时间：2025-07-16
- 摘要：Frequency assignment problems are NP-complete.An immune genetic algorithm is proposed to solve them,which is based on the immune regulation mechanism.Its structure is similar to genetic algorithm.The kernel idea is to construct an antibody network with all individuals,to regulate individual diversity with immune density regulation mechanism at the individual level,and to regulate the balance between individual diversity and population convergence at the population level with immune network regulation mechanism.Therefore,this algorithm can avoid some deficiencies of standard genetic algorithm.We solved both the fixed frequency assignment and the minimal span frequency assignment and got better results.关键词：frequency assignment;immune genetic algorithm;immune density regulation;immune network regulation2|1545|16更新时间：2025-07-16
- 摘要：The optimized method to synthesize the multi-layered radar absorbing materials with a maximum bandwidth satisfied by a special value of reflection loss to electromagnetic wave in a given range of thickness is established using the simple genetic algorithms,into which both dynamically tracing variable restricting conditions and dynamically extending the coding length are incorporated for the first time.The thin multi-layered microwave absorbing coatings with a broad bandwidth over a given range of frequencies are obtained based on the database of electromagnetic parameters for the absorbers prepared in our lab.The optimized design method can be extended to synthesize thin-layered,lightweight,broadband and strong-absorbing radar absorbing materials.关键词：radar absorbing materials;genetic algorithm;optimized design2|1421|19更新时间：2025-07-16
- 摘要：A model called composite excitation method for targets upon ground in the application of electromagnetic scattering computation is described.The method comprises two steps:first calculates the scattering of ground,second step calculates the scattering of targets by imposing the scattering wave got at first step upon the targets.A truck is concerned in this paper.The scattering waves、 RCS in UHF frequency and SAR imagining are calculated.Good agreements between calculated and experimental results are obtained.It shows the effectiveness of the method.关键词：scattering;FDTD;SAR;RCS2|1002|0更新时间：2025-07-16
- 摘要：The vane-loaded helical slow-wave structures is widely used in high power,broadband traveling-wave tubes (TWTs).Considering azimuthal space harmonics brought by the vanes,the finite size vane model is suggested for vane-loaded helical slow-wave structures in this paper.Two vane-loaded helical slow-wave structures of TWT are calculated by the derived dispersion equations and the expressions of interaction impedance.The calculated results are compared with the results of measurement and the calculated results of simple vane model.We find the most suitable center angle(θ) of the vanes is in existence for the first time.关键词：helix;vane loaded;dispersion characteristics2|967|0更新时间：2025-07-16
- 摘要：The measurement on the range resolution of signals is mainly based on nominal range resolution parameter and delay resolution constant.However,in calculating the range nominal resolution of rectangular pulse signals using conventional definition formula,quadrature operation for range ambiguity function or infinite integration for "SIN" function is required.But these integral operations are often so complex or indefinite as not to give an effective result.Being apart from the definition formula boldly,the paper proposes to search for the columns in the ambiguity function matrix where the "half power point" exists and solves the problem above mentioned.It puts forward a completely new idea for calculating the resolution of this kind signal.In addition,with calculation for delay resolution constant,an expression in time-domain is derived using Parseval theorem on the basis of the original definition,thus,infinite integration for "SIN" function is ingeniously avoided.It provides a novel method for calculation for delay resolution constant.Particularly,in verification operation for "sync-plus-white" signal,using Parseval theorem again,the quadrature for "sync-plus-white" signal in several periods is changed into that in one period,thus making the computation simplified greatly.关键词：rectangular pulse;range resolution;sync-plus-white;passive detection2|1328|1更新时间：2025-07-16
- 摘要：Based on functional specifications of carry lookahead adders,and it directly uses rewriting induction techniques to establish the correctness of these specifications by proving that they actually implement addition on the natural numbers.A brief comparison with related work is made and the results show that this approach has advantages in specifying and verifying hardware circuits.关键词：rewriting;induction;adder;specification;verification2|1071|2更新时间：2025-07-16
- 摘要：A novel FDTD (finite-difference time-domain) method is presented for the analysis of electromagnetic wave propagation in periodic structures.The boundary conditions are set according to Floquet's theorem for periodic structures.Floquet's theorem is used twice on electric field boundary and magnetic field boundary.Thus,the computational domain is restricted to a single period,and the absorbing boundary condition can be used on the other boundaries.Maxwell's system is then solved as an initial value problem on a FDTD grid for the prediction of the (eigen) frequencies of the propagating modes for a given value of the propagation constant.关键词：finite-difference time-domain;Floquet's theorem;periodic guided waves structures2|1280|4更新时间：2025-07-16
- 摘要：This paper analyzes the technology with intra-pulse chirp and inter-pulse stepped frequency to obtain high-resolution range profile.The echo expressions of static and moving targets are derived.According to the echo expression of chirp-subpulse signal,the sampling position requirements of signal processor are discussed.关键词：linear FM;synthetic wide-band;pulse compression;high range resolution;radar2|1140|6更新时间：2025-07-16
- 摘要：Microstrip patch antenna with a shorting pin has a lower resonant frequency,so it especially suits to low frequency portable communication equipments(such as handsets).Compared to rectangular and circular patch antenna loaded with a shorting pin,triangular patch antenna loaded with a shorting pin has lower resonant frequency.Based on the cavity model theory,this paper used the static mode of the unloaded triangular patch antenna to propose the analytical method of triangular patch antenna loaded with a shorting pin,and the calculation formulas of resonant frequency、input impedance and reflective loss for this kind of antennas are given.The numerical calculations agree with the measured results very well,verifying that this analytical method is valid.关键词：microstrip patch antennas;cavity model theory;resonant frequency;input impedance;return loss2|1396|1更新时间：2025-07-16
- 摘要：In a sense,the spectrum leakage is inevitable in asynchronous sampling.A FFT-based iterative algorithm is presented in this paper to solve the problem of spectrum leakage on analyzing periodical signal.The leakage will be reduced sufficiently,and so much as to be eliminated when put to use.The algorithm can be easily applied to determinate accurately the amplitude,the phase of the harmonic component of a distorted signal,and doesn't need more sampling-data.It approaches the accurate amplitude and the phase only by the analysis of the distorted amplitude and phase and has its better theoretical and practical importance.关键词：asynchronous sampling;spectrum leakage;iterative algorithm2|904|3更新时间：2025-07-16
- 摘要：In this paper,the standard current of lightning subsequent return-stroke is splited into a breakdown current and a corona current based on IEC1312-1.The breakdown current and the corona current are represented by a new pulse function and a double exponential function respectively.The subsequent return stroke standard current is fitted and some parameters are obtained.We assume for the electromagnetic fields calculating of lightning subsequent return-stroke a breakdown discharge time constant and a corona discharge time constant based on DU model.The characteristic features of calculated field waveforms are similar to those of the typical field waveforms.关键词：DU model;pulse function;electromagnetic pulse;lightning2|1256|5更新时间：2025-07-16
- 摘要：A miniature low phase noise synthesizer in V band has been studied in this paper.An agile synthesizer in L band、a sampling phase locked source in Ku band、an up converter module and a frequency multiplier have been developed.An up converter & a multiplier's combination has been adopted to get low phase noise and fast switching speed.In this method,DRO PLS has been applied to be a local oscillator to assure low phase noise performance,and the agile synthesizer in L band has been used to assure fast agile speed.The dimension of synthesizer is 100×80×30mm3,the phase noise is below -86dBc/Hz(1kHz),the switching speed is faster than 40 μs and the spurious output is below -60dBc.关键词：phase noise;agile synthesizer;miniaturization2|1368|2更新时间：2025-07-16
- 摘要：Aiming at the influence caused by the higher accerleration of moving target on the radar signal processing,we present the concept of accerration ambigutary function firstly.,then define accerleration resolution on the basis and introduce the expression of accerleration resolution for rectangle pulse signal.It is concluded that the accerleration resolution is inversely proportional to the quadratic of signal accumulatery duration.At last,we apply the conclusion to the parameter designing and performance analysis for a Doppler radar.Simulation justifies the conclusion.关键词：accerration resolution;accerration ambigutary function;matched filter;signal-noise ratio;accumulation2|1887|9更新时间：2025-07-16
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