High-resolution Staring Imaging of Missile-borne Phased Array Detector Based on Wavefront Coding

doi:10.3969/j.issn.1000-1093.2020.06.001

Abstract

Abstract: The imaging algorithm of the missile-borne phased detector is studied to realize the forward-looking high-resolution imaging of new precision guided munitions. A high-resolution staring imaging algorithm based on wavefront coding is proposed，in which the adaptive monopulse response curve (MRC) is used to realize forward-looking high-resolution detection. The wavefront coding is used to detect the non-planar wavefront of beam，so as to increase the effective information of the strong scattering points in the target area carried by the instantaneous echo signal. Adaptive MRC is used to provide the capability of high-resolution azimuth angle measurement for missile，and MRC is directly optimized by using echo signal to focus the angle measurement section. The factors (such as SNR and random modulation range) affecting imaging accuracy are studied. The simulation experimental and field test results show that the maximun imaging error of non-planar wavefront is 2.4 m，the error of azimuth and distance is less than 2.5 m when using the actual echo signal，which can meet the actual needs of the missile. Key

Key words: missile-bornephasedarraydetector, wavefrontcoding, adaptivemonopulseresponsecurve, high-resolution, staringimaging

CLC Number:

TJ43⁺4.1

CHENG Cheng， GAO Min， ZHOU Xiaodong， JI Yongxiang， ZONG Zhulin. High-resolution Staring Imaging of Missile-borne Phased Array Detector Based on Wavefront Coding[J]. Acta Armamentarii, 2020, 41(6): 1041-1055.

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第41卷第6期2020 年6月
兵工学报ACTA ARMAMENTARII
Vol.41No.6Jun.2020

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