直升機載戰(zhàn)場偵察雷達(dá)空時自適應(yīng)處理實用方法研究
RESEARCH ON PRACTICAL APPROACHES TO SPACE-TIME ADAPTIVE PROCESSING FOR HELIBORNE BATTLEFIELD SURVEILLANCE RADAR
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摘要: 針對直升機平臺的特點,本文研究了直升機載戰(zhàn)場偵察雷達(dá)雜波抑制與平臺運動補償?shù)目赡苡行緩?主要包括傳統(tǒng)的DPCA方法、-ADPCA方法、-STAP方法、隨機抽取單元輔助通道-STAP方法和擴展的-STAP方法。理論分析與計算機仿真表明,擴展的-STAP方法更適合于多種非理想情況(如:陣元幅相誤差、載機偏航、航速誤差等)和電子戰(zhàn)環(huán)境,具有更強的雜波與干擾抑制能力和更強的誤差魯棒性,而且,該方法既可用于相控陣?yán)走_(dá),又可用于連續(xù)型天線系統(tǒng),是直升機載戰(zhàn)場偵察雷達(dá)有效地實現(xiàn)雜波抑制與平臺運動補償?shù)目扇》桨浮?/div>
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關(guān)鍵詞:
- 直升機載雷達(dá); 空時自適應(yīng)信號處理; 雜波抑制; 干擾
Abstract: This paper studies the optional effective methods for clutter suppression and platform motion compensation in Heliborne Battlefield Surveillance Radar (HBSR), which includes the traditional DPCA method, -ADPCA method, -STAP method, -STAP method with random-element auxiliary channel and extended -STAP method. A comparative analysis is performed. Theoretical analysis and computer simulation further illustrates that the extended -STAP method is suitable for modern electronic warfare environment. It has stronger clutter and jamming rejection performance in the concentrated jamming environment and stronger error robustness in the non-ideal real environment (i.e., array element. amplitude and phase errors, helihorne crab, velocity error, etc).In addition, this method can be imple- merited easily for phased array heliborne radar as well as continuous antenna system. Therefore the extended -STAP approach is feasible and available for clutter suppression and platform motion compensation in HBSR.M.I. Skolnik, Radar Handbook, Second Edition, New York, McGraw-Hill, 1990, 16.1-16.8, 18.1-18.16.[2]R. Klemm, Adaptive airborne MTI with two dimensional motion compensation, IEE Proc.-F,1991, 138(6), 551-558.[3]I.S. Reed, J. D. Mallett, L. E. Brennan, Rapid convergence rate in adaptive arrays, IEEE Trans.on AES, 1974, AES-10 (6), 853-863.[4]R.D. Brown, M. C. Wicks, Zhang Y, Zhang Q, Wang H. A space-time adaptive processing approach for improved performance and affordability, IEEE National Radar Conference, MI,USA, 1996, 321-326.Wang H.[J].Zhang Q, R. D. Brown, M. C. Wicks, An improved and affordable space-time adaptive processing approach, IEEE International Radar Conference (CIEIRC96), Beijing, China.1996,:-[5]El-Azhary, M. S. Afifi, P. S. Excell, A simple algorithm for sidelobe cancellation in a partially adaptive linear array, IEEE Trans. on AP, 1988, 36(10), 1484-1486.[6]許志勇,AEW雷達(dá)空時二維自適應(yīng)處理降維方法研究,[博士論文],西安電子科技大學(xué),1997,9. 
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