摘要
研究了双基地多输入多输出(multiple input multiple output,MIMO)雷达发射相干脉冲串时的参数估计性能,推导对Swerling I和Swerling II目标的去波方向(direction of departure,DOD)、波达方向(direction of arrival,DOA)和多普勒频移联合估计的克拉美罗界(Cramer-Rao bound,CRB),并分析发射脉冲为正交频分线性调频信号时,各参数对CRB的影响。结果表明对Swerling I和Swerling II目标的DOD和DOA均可做出较理想的估计,Swer-ling I目标更优,可较好地估计Swerling I目标的多普勒频移,但难以估计Swerling II目标的多普勒频移。
The parameter estimation performance is studied in bistatic multiple input multiple output（MIMO） radar for coherent pulses.The Cramer-Rao bound（CRB） for joint direction of departure（DOD）,direction of arrival（DOA） and Doppler frequency estimation is derived for both Swerling I and Swerling II targets.The influences of some parameters on the CRB are analyzed when the coherent pulses are orthogonal frequency division linear frequency modulation signals.The result shows that bistatic MIMO radar can get a good performance on DOD and DOA estimation for both Swerling I and Swerling II targets,and the performance for Swerling I targets is better than Swerling II ones.Also it has a good performance on Doppler frequency estimation for Swerling I targets,but is difficult to estimate Swerling II ones.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2011年第7期1497-1502,共6页
Systems Engineering and Electronics
