超高分辨率星载多发多收滑动聚束SAR成像

doi:10.3969/j.issn.1001-2400.2015.06.023

J4 ›› 2015, Vol. 42 ›› Issue (6): 131-137.doi: 10.3969/j.issn.1001-2400.2015.06.023

• Original Articles • Previous Articles Next Articles

Super high-resolution spaceborne multiple-transit and multiple-receive sliding spotlight SAR imaging

WU Yuan;SUN Guangcai;YANG Jun;XING Mengdao

(National Key Lab. of Radar Signal Processing, Xidian Univ., Xi'an 710071, China)

Received:2014-09-14 Online:2015-12-20 Published:2016-01-25
Contact: WU Yuan E-mail:wuyuaner@126.com

Abstract

Abstract:

In the Wide-field Super High-resolution Spaceborne Multiple-transit and multiple-receive Sliding Spotlight SAR, the line-of-sight approximation of the curved orbit is not established, so traditional imaging algorithms based on line-of-sight approximation is no longer available. For this problem, a super high-resolution velocity scaling algorithm(SHRVS) is proposed to meet the need of wide-field and super high-resolution. Besides, in the procedure of sub-band assembling, a high level virtual image appears due to the frequency aliasing of adjacent sub-bands. For this problem, an optimized linear FM transmit waveform is proposed, which can depress the virtual image level greatly.

Key words: sliding spotlight synthetic aperture radar, multiple-transit and multiple-receive, super high-resolution, wide-field

WU Yuan;SUN Guangcai;YANG Jun;XING Mengdao. Super high-resolution spaceborne multiple-transit and multiple-receive sliding spotlight SAR imaging[J].J4, 2015, 42(6): 131-137.

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Super high-resolution spaceborne multiple-transit and multiple-receive sliding spotlight SAR imaging

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