利用压缩感知的逆合成孔径激光雷达成像新方法

doi:10.3969/j.issn.1001-2400.2010.06.009

Abstract

Abstract:

Limited by the laser modulation technique, the coherence between transmitting pulses of the inverse synthetic aperture imaging ladar (ISAIL) can not be kept, which leads to the unfocused image in the azimuth direction. Here, an instantaneous imaging algorithm is proposed to achieve the high resolution with less echo data in a short coherence time. Based on the theory of compressed sensing, the ISAIL imaging is converted into a reconstruction issue using the orthogonal base. The reconstruction of the target is resolved by optimizing the function. Under the situation of a low SNR, the performance of the imaging algorithm is improved by constructing a weighted matrix. Experimental results using measured data of the indoor ISAIL system validate the feasibility and effectiveness of our method.

Key words: inverse synthetic aperture imaging ladar, instantaneous imaging, compressed sensing, sparse signal reconstruction

ZANG Bo;ZHANG Lei;TANG Yu;XING Meng-dao. Novel imaging method using compressed sensing for the inverse synthetic aperture imaging ladar[J].J4, 2010, 37(6): 1027-1032.

References

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Novel imaging method using compressed sensing for the inverse synthetic aperture imaging ladar

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