PRF selection for synthetic aperture radar in ellipse orbit

Rui Wang; Ruliang Yang

doi:10.1117/12.467698

30 April 2003 PRF selection for synthetic aperture radar in ellipse orbit

Rui Wang, Ruliang Yang

Proceedings Volume 4894, Microwave Remote Sensing of the Atmosphere and Environment III; (2003) https://doi.org/10.1117/12.467698
Event: Third International Asia-Pacific Environmental Remote Sensing Remote Sensing of the Atmosphere, Ocean, Environment, and Space, 2002, Hangzhou, China

Abstract

Pulse Repeat Frequency (PRF) is a very important parameter in the Synthetic Aperture Radar (SAR) system. It affects other parameters and determines the radar performance. For a conventional procedure to select PRF for SAR, the earth is treated as a ball, and the orbit as a circle. At this time, the error from the calculating distance between the satellite and the target on the earth surface must exist. It severely affects the right selection of PRF. To avoid this error, in this paper, the model for the earth is an ellipsoid and the orbit is an ellipse. And it is specified a space coordinate, in which the error for the distance between the satellite and targets is corrected and the PRF selection for SAR is discussed. Finally the approach is used to derive an available PRF plot and the azimuth/range ambiguity to signal ratio. As comparison, the same results in circle orbit and round earth are specified.

Citation Download Citation

Rui Wang and Ruliang Yang "PRF selection for synthetic aperture radar in ellipse orbit", Proc. SPIE 4894, Microwave Remote Sensing of the Atmosphere and Environment III, (30 April 2003); https://doi.org/10.1117/12.467698

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