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1、3112 0 1 0M1aACTA ARM AM ENTARIIVo.l 31 No. 1Jan. 2010基于移动干扰站的合成孔径雷达干扰研究田贤峰1, 2, 方广有1( 1nullSS0,100190; 2nullb+,100195 )null nullK1: 为解决军事目标移动时需要随行掩护的问题, 提出了合成孔径雷达 ( SAR)系统基于移动式干扰车(站)的干扰方法, 即随行干扰技术b干扰车与目标同时移动, 使得干扰车与目标同处于 SAR照射区域, 更加有效地实现对动目标的欺骗干扰b论述了干扰原理a干扰效果, 仿真得到了比静止干扰站更加清晰的干扰图像,并且只需要较小的干扰功率b分析了平
2、台运动对干扰效果影响bnull null1oM: 信息处理技术; 欺骗干扰; 移动式干扰站; 动目标干扰; 随行干扰技术null nullms|: TN 974DS: AcI|: 1000-1093( 2010) 01-0027-05Jamm ing Technique Against Synthetic Aperture RadarBased onM oving StationTIAN X ian-feng1, 2, FANG Guang-you1( 1. Institu te of E lectronics Ch inese Academ y of Sciences, Beijing 10
3、0190, Ch ina;2. Institute of A ir Force T rain ing Equ ipm en t, B eijing 100195, China)Abstract: M oving jamm ing station against synthetic aperture radar ( SAR) is presented for protecting them ovingm ilitary targets. Jamm ing station ism oving follow ingm ilitary targets. Both jamm er and targets
4、 arein the region of SAR im aging, so as to gain good jamm ing effec.t Through analyzing jamm ing theory andim p lem ent effec,t jamm ing im aging is clearer than imm obile jamm er. Lesser jam pow er is needed, andthe influence of jamm er s moving is analyzed.Keywords: inform ation processing techni
5、que; deceptive jamm ing; moving jamm ing station; moving tar-get jamm ing; m oving jamm ing techniquenull nulll: 2008 - 06- 21:9!null 863null9( 2005AA1252 /1253 )Te:B:( 1978null ),3,pV3bE-m ai:l tian86664 163. com;Z( 1963null ),3,pV3=bE-m ai:l gyfang m ai.l ie. ac. cn0nulldr( SAR)+Y5W,X?Z+Yf1/mB 1-
6、2bZ+YS,7ZSARF/EsA1 3- 7bM+YS(pa+)11y,911Sb-SARd_ZT 3 ,_+YSul,9vu1Fv?q,$Q,1&3i?bSARS_AU+ 1, 4, 8 ,+YSZ_,rTzb_iJ,4SARdZE,/b1s/,y,iVrTZ_1,兵null 工null 学null 报31srTY,ZEVb1nullSAR?L1| 1VUs(t) = nullnulln= - nullg(t- nT) exp jnullc (t- nT) +jnullkr(t- nT)2 , ( 1)T: g (t) = 1, 0 t Tr, T rz;0,; T; kr|q; null
7、cb#38,bSAR(f)aM1+YSbUSrgTUS,+YS,m1Ubm1nullUimF ig. 1null Jamm ing elem ents sketch mapnulljSAR,!SrRi (t),5o| 1 - 2VVUsi (t) = nullW a(t- Ri(t) /c)s(t- 2Ri (t) /c) =nullnulln= - nullnullW a t- Ri (t)c exp - j4nullRi (t)null nullexp jnullc (t- nT) + jnullkr t- nT - 2Ri (t)c2,( 2)T: nullr;W a (t- Ri (
8、t) /c)SARSZ_r9m; c;bInRi(t)W a(t)Mr?o.l7M,y7VRi (nT)W a (nT )9TRi(t)Wa (t),|MT/:si (t) = nullnulln= - nullnullW a (nT)g t- nT - 2Ri (nT)c nullexp - j4nullRi (nT )null + jnullkr t- nT - 2Ri (t)c2.( 3)SrVURi(t)nullRi+ ( - xi)(vs - vix ) + yiviy2Rit+ (vs - vix )2 +xiaixv2iy + aiyyi- ( - xi )(vs - vix )
9、+ yiviy )2R2it22Ri,( 4)T: vix, viy, aix, aiysYSxZ_yZ_#Fs; xi, yiSS; vsSARbm1H 0SAR; RjrSbrRj(t)nullR j + ( - xj)(vs - vjx ) + yjvjy2Rjt+ (vs -vjx )2 + v2jy - ( - xj) (vs - vjx ) + yjvjy )2R2jt22R j, ( 5)T: vjx, vjysYxZ_yZ_sbBVVU2Ri (t)c = nullnulli +2Rj(t)c , ( 6)5Mnullnulli= 2Ri (t) - 2Rj(t)c . ( 7
10、)o| 1- 3sj(t)= nullnulln= -nullWa (nT)g t- nT - 2Rj(nT)c nullexp - j4nullRj(nT)null exp jnullkr t- nT - 2Rj(nT)c2,( 8)T, t- nTVUyHW(_)M,(8)T_y=M 3, 6- 7VVUsj(null, t) = s(null)W a exp - j4nullnullRj(nT) 1+ nullnullc,( 9)T, s(null)VU?|=MbBYd,LSo|VVU 3, 6- 7si (null, t) = sj(null, t)nulli exp - j4null
11、null(null+ nullc)nullnulli =s(null)nulliW a exp - j2nullnull( 2R j(t) + cnullnulli ) 1+ nullnullc,(10)T, nulliLS_bNLSF,|F,5|VVU28null1M_drs(null, t) = nullNi= 1si (null, t) = s(null) nullNi= 1nulliW anullexp - j2nullnull(2Rj (t) + cnullnulli ) 1+ nullnullc. ( 11)(11)TS=IMLo|b2null_vl7null3m null4null3m null 3null8m. SAR
