Computation of Optimum Azimuth Sampling Time for Dual-Channel DPCA System based on Signal-to-Noise Ratio

Author

Lin-lin, Li ; Jing-wen, Li

Author_Institution

BeiHang Univ., Beijing

Volume

3

fYear

2008

fDate

7-11 July 2008

Abstract

This paper starts on the flow of moving target detection in dual channel DPCA system. Firstly the output power density spectrum of moving target and noise in DPCA system is analyzed, and the output SNR is obtained. Then the effect of synthetic aperture time of moving target´s echo and azimuth antenna pattern on output SNR in DPCA is discussed in detail. Based on this effect, the paper deduces the expression which describes the variation of output SNR against synthetic aperture time in Dual-Channel DPCA system, where azimuth pattern is Sinc function, and the synthetic aperture time for optimizing the ability of detecting the moving target is obtained. Further more, this method of acquiring the aperture time can be applied for other antenna patterns. It is testified by processed result of simulated data that the relationship between output SNR and synthetic aperture time fits the above conclusion in Dual-Channel DPCA system.

Keywords

antenna phased arrays; optimisation; radar antennas; synthetic aperture radar; dual-channel DPCA system; optimum azimuth sampling time; power density spectrum; signal-to-noise ratio; Aperture antennas; Azimuth; Clutter; Directive antennas; Object detection; Receiving antennas; Sampling methods; Signal to noise ratio; Solid modeling; Synthetic aperture radar; SAR; antenna pattern; dual-channel DPCA; output SNR;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium, 2008. IGARSS 2008. IEEE International

Conference_Location

Boston, MA

Print_ISBN

978-1-4244-2807-6

Electronic_ISBN

978-1-4244-2808-3

Type

conf

DOI

10.1109/IGARSS.2008.4779568

Filename

4779568