CAJ | 학술논문

在单站非合作无源定位中,TDOA的获取至为重要.针对传统以信号的二阶统计量为数学工具的TDOA估计存在对加性噪声敏感缺点,提出利用三阶或高阶统计量估计信号TDOA.该方法最大优点是能够有效抑制高斯背景噪声(白噪声和色噪声),适用于低信噪比信号的TDOA估计,最后利用Matlab仿真证明了其有效性.
재단참비합작무원정위중,TDOA적획취지위중요.침대전통이신호적이계통계량위수학공구적TDOA고계존재대가성조성민감결점,제출이용삼계혹고계통계량고계신호TDOA.해방법최대우점시능구유효억제고사배경조성(백조성화색조성),괄용우저신조비신호적TDOA고계,최후이용Matlab방진증명료기유효성.
The obtain of TDOA is critical in SOPLAT. Conceming additive noise shortcomings of TDOA estimation using traditional mathmetical tool of second-order statistics of signals, take advantage of three-order or high-order statistics to estimate the TDOA of signal. The biggest advantage of this method is that it can restrain Gaussian noise (white noise and Colored noises)effectively. Thus it can be applied to TDOA estimation of lower SNR signal. In the end the validity was proved using Matlab simulation.