Evalution on anti-jamming efficiency of coherent sidelobe cancellation

It is addressed that the anti-jamming efficiency of CSLC coherent sidelobe cancellation could not be only evaluated by C Cancellation ratio, but also by the detection range change between before and after CSLC. According to orthogonal principle, by introducing the correlation coefficient between the main and auxiliary jamming signal, it could be simplified to calculate the C of CSLC. The mathematical models of C of the single and double CSLC are set up considered the receiver noise, and the static simulations are made. The results indicated that the jamming signal could be canceled to the noise level by single CSLC when the jamming signals of main and auxiliary channel are cohered completely, but the jamming signals level will be higher than the noise s level when the channels are not cohered completely and jammer-to-noise ratio is high. The CSLC has a strong anti-jamming performance for cover noise jamming.