A New Type Quasi-Continuous Radar Employed the Double Linearly Frequency Interrupted Modulation Signal

LIU Gao-hui; GAOYong

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A New Type Quasi-Continuous Radar Employed the Double Linearly Frequency Interrupted Modulation Signal

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- A New Type Quasi-Continuous Radar Employed the Double Linearly Frequency Interrupted Modulation Signal
- Acta Electronica Sinica Vol. 38, Issue 3, Pages: 695-699(2010)
- 作者机构：
  
  西安理工大学电子工程系,陕西,西安,710048
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN958.94
- Published：2010
- 稿件说明：
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LIU Gao-hui, GAOYong. A New Type Quasi-Continuous Radar Employed the Double Linearly Frequency Interrupted Modulation Signal[J]. Acta Electronica Sinica, 2010, 38(3): 695-699.
DOI：

LIU Gao-hui, GAOYong. A New Type Quasi-Continuous Radar Employed the Double Linearly Frequency Interrupted Modulation Signal[J]. Acta Electronica Sinica, 2010, 38(3): 695-699. DOI：

摘要

为解决常规线性调频雷达存在的距离速度耦合和近距离盲区等问题，提出一种采用大占空比双线性间断调频脉冲信号的准连续波体制雷达。该雷达在一个脉冲重复周期内分时交替发射频谱互不重叠的两个线性调频脉冲信号，接收机通过发射信号分离、Stretch处理、时域互相关、FFT、运动补偿等过程可以在一个脉冲重复周期内获得运动目标的速度估计值和距离估计值。本文首先给出了该雷达的信号模型和距离速度去耦合原理，分析了系统性能，最后讨论了尚需解决的关键问题。

Abstract

A new type quasi-continuous radar which take a double linearly frequency interrupted modulation signal with large operating duty as the transmitting wave is proposed in order to solve the range-velocity coupling problem in the LFM-CW radar and the short-range blind area problem in LFM pulse radar. In this quasi-continuous radar

two LFM signals whose spectrums are not overlapped are transmitted alternately in the transmitting pulse

and the estimated values of the range and the velocity can be obtained within a pulse repetition interval in the receiver by the separating the transmitted signals

Stretch processing

correlation processing

FFT and the motion compensating. In this paper

the signal model and the principle of range-velocity decoupling are firstly given. And then its performance is analyzed. Finally

some key problems to be solved are discussed in the radar.

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