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COVARIANCE MATRIX ESTIMATION METHOD FOR REDUCING NONSTATIONARY CLUTTER AND HETEROGENEITY CLUTTER
COVARIANCE MATRIX ESTIMATION METHOD FOR REDUCING NONSTATIONARY CLUTTER AND HETEROGENEITY CLUTTER
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机译：减少非平稳杂波和非均质杂波的协方差矩阵估计方法
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摘要
The present invention relates to a covariance matrix estimation method for a radar system, capable of improving the target detection performance by efficiently removing a nonstationary clutter and a heterogeneous clutter in a radar receiving signal. The covariance matrix estimation method includes: a step of calculating a first covariance matrix by using operation information of a transmitter and a receiver corresponding to a test cell of the receiving signal; a step of estimating a second covariance matrix from small amounts of secondary data except for the test cell in the receiving signal; a step of obtaining a final covariance matrix including both a nonstationary clutter element and a heterogeneous clutter element by multiplying a weighted value to each of the first covariance matrix and the second covariance matrix and composing the same; and a step of removing the nonstationary clutter element and the heterogeneous clutter element by applying a filter to the final covariance matrix.
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