Dual-channelradio fuse simulator

Abstract

The invention provides a dual-channel radio fuse simulator, which comprises a simulator control module and a radio frequency modulation module, and is characterized in that the radio frequency modulation module comprises a first single-pole double-throw switch, a phase shifter, a numerical control attenuator, a delay line and a second single-pole double-throw switch which are connected in sequence, and the phase shifter performs frequency modulation in a phase modulation mode; the simulator control module comprises a power conversion circuit, a single-chip microcomputer system RS422 interface, a sawtooth wave generation circuit and a digital IO output circuit; the single-chip microcomputer system is connected to an upper computer through an RS422 interface; the sawtooth wave generation circuit generates sawtooth waves, and the sawtooth waves enter the phase shifter; the digital IO output circuit controls the first single-pole double-throw switch, the second single-pole double-throw switch and the numerical control attenuator; and according to the invention, the interface is simple, the required resources are few, miniaturization system integration is easy, frequency modulation is realized by adopting the phase shifter, the cost is low, and the reliability is high.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a dual-channel radio fuze simulator. Background technique [0002] The radio fuze simulator is mainly used to generate simulated fuze target echoes, which can simulate the Doppler frequency and target energy of the target. The current mainstream radio fuze simulators mainly use "vector synthesis phase modulation method" and "up and down Frequency conversion method" and so on. The core of the radio fuze simulator is to realize the frequency modulation of the carrier, and have a certain degree of carrier suppression and sideband suppression, and simulate the Doppler modulation of the target. [0003] "Vector synthesis phase modulation method" is to mix the carrier signal signal with two orthogonal modulation signals, and then synthesize it through the adder to realize the frequency modulation of the carrier, that is, single sideband modulation. This method is sim...

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Problems solved by technology

[0003] "Vector synthesis phase modulation method" is to mix the carrier signal signal with two orthogonal modulation signals, and then synthesize it through the adder to realize the frequency modulation of the carrier, that is, single sideband modulation. This method is simple in system, High cost performance, but the Doppler modulation index of the carrier is poor

[0004] The "up-and-down conversion method" uses two coherent frequency synthesis sources with a certain frequency difference to successively down-convert and up-convert the carrier signal. Compared with the carrier signal, the up-converted signal has a certain frequency difference, which can be simulated Doppler information, this method can achieve a higher Doppler modulation degree, but the system is complex and the cost is high

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