Adaptive clutter suppression method for non-cooperative detection radar

Abstract

When radar uses non-cooperative radiation source for detection, due to the complex electromagnetic environment, the clutter suppression performance is limited, the target signal-to-noise ratio is low, and the clutter false alarm is difficult to remove. There are also deviations in the system frequency measurement, causing the spurious Doppler spread to deteriorate further. This paper proposes an adaptive clutter suppression method for non-cooperative detection radar. Firstly, direct wave acquisition and parameter measurement based on the direct wave channel are combined with the existing intelligence database to complete the pulse synchronization of the time dimension. The phase compensation factor is then extracted based on the ground clutter to compensate for the inter-pulse phase factor. Finally, adaptive clutter suppression is completed. Test Results Surface This method improves the clutter suppression performance of non-cooperative detection scenarios.