Title :
Effects of receiver saturation on image formation
Author :
Li, Zhou ; Li, ChunSheng ; Yu, Ze ; Zhang, YongQiang
Author_Institution :
Sch. of Electron. & Inf. Eng., BeiHang Univ., Beijing, China
Abstract :
As the existing technology is not ideal, saturation of radar receiver is inevitable. Receiver saturation will reconstruct the original echo signal and cause the target strength distortion and false targets. This paper established a nonlinear mathematical model of simplified saturation. The signal phase and amplitude errors are obtained by using quadrature demodulation. Then we analyzed the effects of these errors on image formation and verified conclusions by simulation.
Keywords :
echo; radar imaging; radar receivers; target tracking; amplitude error; echo signal; image formation; nonlinear mathematical model; quadrature demodulation; radar receiver; receiver saturation; signal phase error; target strength distortion; Azimuth; Harmonic analysis; Limiting; Mathematical model; Power harmonic filters; Receivers; Time frequency analysis; False Target; Nonlinear; SAR; Saturation;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2011 IEEE International
Conference_Location :
Vancouver, BC
Print_ISBN :
978-1-4577-1003-2
DOI :
10.1109/IGARSS.2011.6049183
