The invention provides an implementation method for preventing forwarding interference of a
frequency modulation radio
fuze and aims to provide a digitalized interference prevention
fuze implementation method with which
triangular wave frequency can be flexibly adjusted,
fuze operating distance can be changed, and forwarding interference prevention capacity of fuze equipment can be improved. The implementation method is realized by the following technical scheme. A
triangular wave generator formed by a
triangular wave frequency control word, an N-bit phase accumulator, a data bit
cut processor and a triangular wave phase
lookup table in sequence and a BPSK (Binary
Phase Shift Keying) modulator crosslinked between a balance
GOLD code generator and a digital-to-analog converter are designed in a programmable
gate array chip FPGA (Field Programmable Gata Array). After the triangular wave generator frequency is given, the computational formula of the triangular
wave frequency control word is adopted in the DDS triangular wave generator. The calculated triangular
wave frequency control word is sent to the N-bit phase accumulator to be accumulated, the lower 18 bits of the data are
cut and the higher 14 bits of the data are maintained. The data is sent to the triangular wave
lookup table, and phase-to-range conversion of triangular wave signals is achieved.