As GPS depends on weak satellite signals, it is vulnerable to jamming signal that intentionally interferes in reception of the desired GPS signal. Accordingly, many anti-jamming techniques have been invented and developed. Most of researchers have studied about an array antenna that forms appropriate nulls in the antenna directivity patterns and removes the jamming signal. However, the anti-jamming techniques using array antenna have weakness when the satellite signals and the jamming signals are entered in a similar direction. Thus, the development of anti-jamming techniques that can mitigate above problem becomes inevitable. In this paper, two anti-jamming techniques which use filter bank and SVD are proposed. The proposed techniques are tested with tone jamming signal, tone jamming signal which have varying JSR(Jamming to Signal Ratio) and chirp jamming signal. And we finally present favorable simulation results in terms of post correlation SNR.
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