頻率源穩(wěn)定性對(duì)BiSAR成像的影響研究
Influence of the Frequency Instability on the Bistatic-SAR Imaging
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摘要: 高穩(wěn)定度的頻率源是實(shí)現(xiàn)雙站合成孔徑雷達(dá)(BiSAR)系統(tǒng)相位同步的基礎(chǔ)，該文研究分析了 收、發(fā)系統(tǒng)獨(dú)立頻率源條件下不同類型的頻率誤差對(duì)BiSAR成像的影響，確定了BiSAR成像的頻率源穩(wěn)定性要求。最后，給出了計(jì)算機(jī)仿真的結(jié)果。
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關(guān)鍵詞:
- 雙站合成孔徑雷達(dá); 頻率穩(wěn)定度; 微波成像
Abstract: The high stability of frequency sources is the foundation to the phase synchronization of the Bistatic Synthetic Aperture Radar (BiSAR) system. This paper analyzcs the influence of various frequence instabilities of sources in transmitter and receiver to the BiSAR imaging, and demonstrates the requirement to the source stability. The computer simulation results of BiSAR imaging with four types of frequency instabilities are presented. -
Grisham. Method of satellite operation using synthetic aperture radar addition holography for imaging. US Patent, 4, 602, 257, July 22, 1986.[2]Powell, et al.. Autonomous synchronization of a bistatic synthetic aperture radar (SAR) system.US Patent, 5, 113, 193, May 12, 1992.[3]楊振起,張永順,駱永軍.雙(多)基地雷達(dá)系統(tǒng).北京:國(guó)防工藝出版社,1998,3:5-6.[4]張澄波.綜合孔徑雷達(dá)原理,系統(tǒng)分析與應(yīng)用.北京:科學(xué)出版社,1989,11:140-153.[5]Kirk J. Motion compensation for SAR. IEEE 7rans. on AES, 1975, AES-11(3): 338-348.[6]Madsen S. Estimating the Doppler centroid of SAR data. IEEE Trans. on AES, 1989, AES-25(1):134-140. -
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