Analysis of the characteristics of squint circular scanning SAR and its imaging method

被引：1

作者：

National Key Lab. of Radar Signal Processing, Xidian Univ., Xi'an 710071, China ^{[1
]}

不详 ^{[2
]}

机构：

[1] National Key Lab. of Radar Signal Processing, Xidian Univ.

[2] School of Electronic Engineering, Xidian Univ.

来源：

Xi'an Dianzi Keji Daxue Xuebao | / 1卷 / 38-44+74期

关键词：

Doppler parameter; Squint circular scanning; Synthetic aperture radar; Two-dimensional spectrum;

D O I：

10.3969/j.issn.1001-2400.2014.01.008

中图分类号：

学科分类号：

摘要：

Circular scanning SAR (CSSAR) is a new mode for fast large area SAR imaging by increasing the azimuth scanning speed. The squint CSSAR possesses the advantages that the side-looking CSSAR does not have due to its unique observing direction. However, the available signal characteristic analysis and imaging method for side-looking CSSAR become questionable when applied to the squint CSSAR. This paper establishes the echo range model and analyzes several parameters such as azimuth scanning speed, Doppler characteristics and azimuth resolution according to the moving feature of squint CSSAR. Furthermore, the internal relationship between the squint CSSAR and the classical stripmap mode is revealed. The range approximation model as well as the corresponding imaging method is analyzed. Computer simulation results validate the conclusions and the imaging method.

引用

页码：38 / 44+74

共 14 条

[1]

Zhou P., Li Y., Xing M., Study of the imaging method of the missile-borne scan SAR wide-swath mode, Journal of Xidian University, 38, 1, pp. 96-103, (2011)

[2]

Deng Y., Chen Q., Qi H., Et al., A high-resolution imaging algorithm for MIMO SAR based on the sub-band synthesis in frequency domain, Journal of Electronics & Information Technology, 33, 5, pp. 1082-1087, (2011)

[3]

Zhou S., Zhou P., Li Y., Et al., Research on the imaging algorithm for missile-borne SAR with downward movement, Journal of Xidian University, 38, 3, pp. 90-98, (2011)

[4]

Yi Y., Zhang L., Liu X., Et al., Method for geometric distortion correction of the bistatic SAR, Journal of Xidian University, 37, 2, pp. 231-234, (2010)

[5]

Qian J., Lu X., Xing M., Et al., Parameter estimation of the fast moving target based on tri-channel airborne SAR/GMTI, Journal of Xidian University, 37, 2, pp. 235-241, (2010)

[6]

Ma B., Yu B., Liu C., Et al., A 2-D fourier domain algorithm for StripMap FMCW-SAR raw signal simulation, Journal of Xidian University, 33, 2, pp. 375-380, (2011)

[7]

Jing W., Zhang L., Xing M., Et al., Novel algorithm for the processing of non-uniform motion SAR data, Journal of Xidian University, 35, 4, pp. 605-608, (2008)

[8]

Soumekh M., Reconnaissance with slant plane circular SAR imaging, IEEE Transactions on Image Processing, 5, 8, pp. 1252-1265, (1996)

[9]

Sun B., Zhou Y., Chen J., Et al., Operation mode of circular trace scanning SAR for wide observation, Journal of Electronics & Information Technology, 30, 12, pp. 2805-2808, (2008)

[10]

Bara M., Sagues L., Paniagua F., Et al., High-speed focusing algorithm for circular synthetic aperture radar, Electronics Letters, 36, 9, pp. 828-830, (2000)

← 1 2 →