遺傳算法在掃描SAR波位設(shè)計(jì)中的應(yīng)用
Applying Genetic Algorithm to Beam Position Design of ScanSAR
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摘要: 該文提出了用遺傳算法計(jì)算天線相位加權(quán)的方法,實(shí)現(xiàn)了天線方向圖展寬賦形,以滿足星載SAR觀測帶的要求。另外,對(duì)天線方向圖展寬賦形進(jìn)行了仿真,然后根據(jù)展寬的方向圖、掃描SAR系統(tǒng)參數(shù)和軌道參數(shù),對(duì)距離和方位模糊度、系統(tǒng)靈敏度等指標(biāo)進(jìn)行了計(jì)算,給出了仿真計(jì)算結(jié)果;由這些指標(biāo),設(shè)計(jì)出了波位。仿真表明:在天線方向圖展寬賦形中,用遺傳算法計(jì)算天線相位加權(quán)的方法是可行的。
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關(guān)鍵詞:
- 遺傳算法; 方向圖展寬; 距離和方位模糊度; 波位設(shè)計(jì)
Abstract: In this paper, phase weighting method using genetic algorithm is presented in order to make pattern broaden, satisfying the need of swath. In addition, the broadened pattern is simulated. According to the broadened pattern, the SAR system parameter and the orbit parameter, the range and azimuth ambiguity levels and the system sensitivity are calculated and the results are given. Based on these results, beam positions are devised. The simulation results show that phase weighting method using genetic algorithm is feasible. -
魏鐘銓等著.合成孔徑雷達(dá)衛(wèi)星.北京:科學(xué)出版社,2001.1,表1.6.[2]Chang D C, Hu Chang-Nan, Hung Chia-I, Ho Ko-Tai. Pattern synthesis of the offset reflector antenna system with less complicated phased array feed. IEEE Trans. on AP, 1994, AP-42(2):240-245.[3]Hu Chang-Nan.[J].Chung Ching-Song, Hung Chia-I. Phase-only pattern synthesis for the design of an active linear phased array. 2000 IEEE International Conference on Phased Array Systems Technology (PAST), Dana Point, California, May 20-2.2000,:-[4]張子敬,趙永波,焦李成.陣列天線的遺傳優(yōu)化.電子科學(xué)學(xué)刊,2000,22(1):174-176.[5]李晉文,毛均杰,柴舜連,姚德淼.遺傳算法在天線陣自適應(yīng)算法中的應(yīng)用.電子科學(xué)學(xué)刊,2000,22(2):336-340.[6]Curlander J C.[J].McDonough R N. Synthetic Aperture Radar Systems and Signal Processing. New York, John Wiley Sons, Inc.1991,:- -
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