
Two-Dimensional Range-Doppler Estimation Method for High Frequency Radar Based on Matrix Atomic Norm
LÜ Ming-jiu, MA Jian-chao, WEI Xu, CHEN Wen-feng, YANG Jun, MA Xiao-yan
ACTA ELECTRONICA SINICA ›› 2022, Vol. 50 ›› Issue (5) : 1150-1158.
Two-Dimensional Range-Doppler Estimation Method for High Frequency Radar Based on Matrix Atomic Norm
In order to solve the problems of long coherent time and weak two-dimensional resolution in traditional synthetic bandwidth high frequency radar, a two-dimensional range-Doppler estimation method based on matrix atomic norm for multi-cycle intra-pulse random sparse stepped frequency signal is proposed. Firstly, a series of pulse, which is composed of sequences multiple carriers stepped sub-pulses, has been continuously transmitted in each pulse repetition time to reduce the coherent processing period. Secondly, a continuous set of atoms in matrix form is constructed, and the two-dimensional range-Doppler estimation is transformed into a matrix form of atomic norm minimization problem. The above optimization problem is transformed into a positive semi-definite programming problem, and can be solved. The proposed method can not only effectively reduce the amount of computation, but also achieve the high resolution under the condition of off grid. Theoretical analysis and simulation experiments verify the effectiveness of the proposed method.
high frequency radar / compressed sensing / matrix atomic norm minimization / off grid / Vandermonde decomposition / sparse reconstruction {{custom_keyword}} /
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