基于四阶互模糊函数的TDOA/FDOA联合参数估计算法  

Based on the fourth-order mutual TDOA/FDOA joint parameter estimation algorithm of fuzzy function

作　　者：张柏林[1] 王龙[1] 吴宏超[1] 

机构地区：[1]中国人民解放军空军航空大学,吉林长春130022

出　　处：《科技视界》2016年第5期1-2,共2页Science & Technology Vision

摘　　要：针对二阶互模糊函数在相干高斯噪声环境下会出现较大的噪声相关峰值影响TDOA/FDOA参数正确估计的问题,利用高阶积累量对高斯噪声的不敏感特性,研究基于四阶互模糊函数的TDOA/FDOA参数估计方法,对该方法的参数估计过程进行了详细的理论分析,并针对二阶与四阶互模糊函数两种参数估计方法进行了对比仿真。仿真结果表明,基于四阶互模糊函数的TDOA/FDOA参数估计方法能有效克服噪声的相关性,但对噪声敏感,存在一定的理论研究价值。For second order fuzzy function each other in a coherent gaussian noise environment there will be a larger noise peak affect TDOA/FDOA parameter estimation problem correctly, using higher order accumulation is not sensitive to the gaussian noise characteristics, the research based on fourth-order mutual TDOA/FDOA parameter estimation method of fuzzy function, the parameter estimation process of the method of theoretical analysis, and for the second order and fourth order each fuzzy simulation function compares the two methods of parameter estimation. The simulation results show that, based：on the fourth-order TDO^DOA parameter estimation method of fuzzy function can effectively overcome the noise correlation, but is sensitive to noise, there is a theoretical research value.

关 键 词：干扰源定位 到达时差 到达频差 互模糊函数 

分 类 号：TN911.7[电子电信—通信与信息系统]