合成孔徑雷達(dá)中的二維自動(dòng)增益控制
Two-Dimensional Automatic Gain Control in Synthetic Aperture Radar
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摘要: 該文給出一種合成孔徑雷達(dá)接收機(jī)自動(dòng)增益控制(AGC)的方法，該方法對(duì)合成孔徑雷達(dá)信號(hào) 進(jìn)行二維平均，既保持了信號(hào)的原有特性,又提高了接收機(jī)的動(dòng)態(tài)范圍。與傳統(tǒng)的自動(dòng)增益控制方法相比，它能更好地消除短時(shí)間內(nèi)的干擾以及保留合成孔徑雷達(dá)圖像中的對(duì)比度。該文在對(duì)二維AGC工作方式及時(shí)間參數(shù)選擇進(jìn)行闡述之后，給出了二維AGC的計(jì)算機(jī)仿真結(jié)果以及雷達(dá)實(shí)際使用AGC后獲得的圖像。
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關(guān)鍵詞:
- 合成孔徑雷達(dá)（SAR）; 二維AGC
Abstract: In this paper, a method of automatic gain control for synthetic aperture radar is given. In this way, radar signal is processed in two dimensions. Comparison to the traditional AGC, this method keeps the properties of signal and widens the dynamic range of the receiver. Then the operation mode and coefficient of 2-Dimensional AGC are described, and the computer simulation results and the real radar image are given. -
張澄波.綜合孔徑雷達(dá).北京:科學(xué)出版社,1989,第一章.[2]丁鷺飛,耿富錄.雷達(dá)原理.西安:西安電子科技大學(xué)出版社.1995,66-69.[3]Ulaby, F T, Moore IR K, Fung A F. Microwave Remote Sensing and Surface Scattering and Emission Theory. Artech House, 1982, Ch.6.[4]袁孝康.自動(dòng)增益控制與對(duì)數(shù)放大器.北京:國(guó)防工業(yè)出版社,1987,22-54.[5]M.I.斯科爾尼克著.王軍,林強(qiáng)等譯.雷達(dá)手冊(cè).北京:國(guó)防工業(yè)出版社,1978. -
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