The Jamming of Pseudo-random Code Phase-modulation Fuze and Hardware Implemented Circuit
Huichang Zhao · Acta Armamentarii · 2006
The principle of pseudo-random code phase-modulation fuze was described simply.A scheme of spot and deception jammer was put forward on the basis of this.The circuit principle of each part and its hardware implemented circuit were presented including mainly the demodulation of pseudo-random code phase-modulation signal by use of swept oscillator and Costas loop,the recognition and reconstruction of pseudo-random code sequence based on FPGA,the modulation and transmission of interfered waveform.The jamming effectiveness was described in the presence of bit width error caused by hardware implemented circuit.The maximum error value allowed was given in the case of successful jamming.According to test results of circuit,the whole scheme is feasible.