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首页> 外文期刊>IEEE Transactions on Aerospace and Electronic Systems >Variable time delay estimation in colored and correlated noise environment
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Variable time delay estimation in colored and correlated noise environment

机译：有色和相关噪声环境中的可变时延估计

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摘要

A new iterative algorithm for variable time delay estimation (TDE) is presented. The algorithm is based on a system model where two received signals of the form r/sub 1/(i)=s(i)+n/sub 1/(i) and r/sub 2/(i)=s(i-D(i))+n/sub 2/(i) are used to estimate the delay. In the model i is the discrete-time index, s(i) is the source signal, D(i) is the (integer) delay waveform, and n/sub 1/(i) and n/sub 2/(i) are colored and correlated noises. An iterative delay estimator is devised based on the minimum mean-square error criterion and a linearized observation model. The estimator involves a weighting function that is designated to facilitate the convergence to delay estimate. Simulations are run to test the performance of the algorithm. Results of the simulations are presented.
机译：提出了一种新的可变时延估计迭代算法。该算法基于系统模型，其中两个接收信号形式为r / sub 1 /（i）= s（i）+ n / sub 1 /（i）和r / sub 2 /（i）= s（iD （i））+ n / sub 2 /（i）用于估计延迟。在模型中，i是离散时间索引，s（i）是源信号，D（i）是（整数）延迟波形，n / sub 1 /（i）和n / sub 2 /（i）有色和相关的噪音。基于最小均方误差准则和线性化观测模型，设计了一种迭代延迟估计器。估计器涉及指定的加权函数，以促进收敛到延迟估计。运行仿真以测试算法的性能。给出了仿真结果。

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