空域滤波器组对雷达阵列合成距离像的影响分析

Abstract

Abstract: In order to reduce the complexity of radar system’s hardware design and keep costs down, a wideband signal can be synthesized by combining several individual narrow band components and then a synthetic range profile meeting the actual needs can be acquired. Combining with the characteristics of the synthetic wideband signal and radar array respectively, this paper analyzes the reason for the distortion of a synthetic range profile formed with combination of the synthetic wideband waveform and traditional spatial filter bank in detail, and points out that the distortion consists of two parts including range shift and shape deform, which are caused by the amplitude and phase fluctuation among each subband’s spatial filter output, respectively. Meanwhile some corresponding theoretical formulas are put out and thus the array’s critical conditions of element number obtaining acceptable distortion of synthetic range profile also are deduced. The above conclusions are testified by some numerical simulation tests.

Key words: radar imaging, array, synthetic range profile, subband, spatial filter bank

CLC Number:

WEI Lin, PENG Wei, PENG Weidong, CHEN Kesong. Impact Analysis of Synthetic Range Profile on Radar Array Using Spatial Filter Bank[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2012, 33(8): 1508-1514.

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Impact Analysis of Synthetic Range Profile on Radar Array Using Spatial Filter Bank

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