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|1. (WO2018045594) SPACE-TIME ADAPTIVE PROCESSING METHOD AND APPARATUS BASED ON CO-PRIME PULSE RECURRENCE INTERVAL|
|Title:||SPACE-TIME ADAPTIVE PROCESSING METHOD AND APPARATUS BASED ON CO-PRIME PULSE RECURRENCE INTERVAL|
The present invention is applicable to the technical field of radar signal processing and array signal processing. Provided are a space-time adaptive processing method and apparatus based on a co-prime pulse recurrence interval. The method comprises: step S1, receiving pulses emitted by using a co-prime way, and constructing a virtual pulse Ps by using a time delay among the received pulses; step S2, constructing a virtual snapshot xv according to the constructed virtual pulse; step S3, estimating a covariance matrix RCPRI-SMI of clutters and noises by using the constructed virtual snapshot; and step S4, designing a space-time filter by using the obtained covariance matrix, so as to perform clutter suppression. By means of the provided method and apparatus, the problems related to a distance and Doppler ambiguity can be resolved to some extent, the electronic interference resistance capability can be improved, and the flexibility of a system can be improved.