CAJ | 학술논문

针对基于 FFT的传统二次相关时延估计算法的估计精度受采样频率限制的问题，提出基于 MCZT 的二次相关时延估计算法，并给出了算法的快速实现方法。仿真实验结果表明，相比基于 FFT计算的二次相关算法，基于 MCZT计算的二次相关时延估计算法能较好地对信号时延进行估计，具有较高的时延估计精度和较强的抗噪性能。
침대기우 FFT적전통이차상관시연고계산법적고계정도수채양빈솔한제적문제，제출기우 MCZT 적이차상관시연고계산법，병급출료산법적쾌속실현방법。방진실험결과표명，상비기우 FFT계산적이차상관산법，기우 MCZT계산적이차상관시연고계산법능교호지대신호시연진행고계，구유교고적시연고계정도화교강적항조성능。
Due to the limitation of sampling frequency,it's difficult to improve the precision of traditional quadratic correlation time delay estimation based on FFT computation.To solve this problem,a modified quadratic correlation time delay estima-tion algorithm based on MCZT is presented,and the rapid implementation of the algorithm is proposed.The simulation re-sults show that quadratic correlation time delay estimation algorithm based on MCZT calculation can obtain higher precision and stronger antinoise performance than the quadratic correlation algorithm based on FFT computation.