改进的SPECCORR方法的TDOA估计

Improved SPECCORR Algorithm for TDOA Estimation

使用SPECCORR(周期谱相关比 )方法进行了多径环境下的TDOA估计 .分析了该方法的可行性及它的内在局限性 ,给出了估计结果的正误判断标准 ,并提出了一种改进的SPECCORR方法———区间分割算法 .模拟结果表明 ,改进后的方法在存在多路多径信号并且多径信号幅度较大时仍能够给出正确的TDOA估计值 .

SPECCORR algorithm for estimating TDOA in the multi path environment is evaluated.The feasibility and limitation of the algorithm is analyzed.Thereafter an improved SPECCORR algorithm,the Block Division algorithm,is proposed.The simulation results show that the improved algorithm can reach a reliable estimation value in the complex situations in which a number of large amplitude multi path signals exist.