Projection techniques for separation of multiple secondary surveillance radar sources in a real environment

Secondary Surveillance Radar (SSR) based on multilateration principle and omni-directional antennae are operational today [1,2]. We proposed new algorithms to separate a mixture of overlapping SSR replies on a M-elements antenna in previous works [3, 4], other solutions were also proposed in the literature [5, 6, 7]. Unfortunately, all have either some shortcomings, or an expensive computational cost, or no simple practical implementation. Therefore, there is a need for reliable, simple, effective algorithms to separate multiple SSR signals. Real recorded signals in a live environment are used to demonstrate the effectiveness of the proposed techniques.