Method of compensating sub-array or element failure in a phased array radar system, a phased array radar system and a computer program product

摘要

The invention relates to a method of compensating sub-array or element failure in a phased array radar system. The method comprises the step of defining a virtual array comprising a multiple number of virtual transceiver tiles preferably arranged halfway all connection lines interconnecting a transmitter tile to a receiver tile. Further, the method comprises the steps of performing phased array radar measurements, and estimating radar data associated with a first transmitter/receiver combination by using radar data associated with a second transmitter/receiver combination, wherein the virtual transceiver tile of the first transmitter/receiver combination substantially coincides with the virtual transceiver tile of the second transmitter/receiver combination.

主权项

1. A method of compensating sub-array or element failure in a phased array radar system, comprising the steps of:
providing a transmitter array comprising a multiple number of substantially identical transmitter tiles; providing a receiver array comprising a multiple number of substantially identical receiving tiles; performing phased array radar measurements to obtain radar data associated with combinations of transmitter tiles and corresponding receiving tiles; defining a virtual array comprising a multiple number of virtual transceiver tiles, each virtual transceiver tile corresponding to a particular transmitter tile and a particular receiver tile such that the propagation time of a radar wave transmitted by said transmitter tile and received by said receiver tile, via a radar object, substantially equals the propagation time of a radar wave transmitted and received by the virtual transceiver tile, via the radar object; estimating radar data associated with a defective first combination of transmitter and receiver tiles by using radar data associated with a second combination of transmitter and receiver tiles, wherein the virtual transceiver tile of the first combination of transmitter and receiver substantially coincides with the virtual transceiver tile of the second combination of transmitter and receiver tiles; and correcting the radar measurements by adding the estimated radar data of the defective first combination of transmitter and receiver tiles to the total radar response.