S-mode integrated interrogator

Abstract

The invention discloses an S-mode integrated interrogator, which is used for solving the problems that an interrogator is large in size, large in occupied cabinet space, complex in interface, variousin signal variety, large in debugging difficulty and high in cost. The S-mode integrated interrogator comprises a transmitter, a transmitting monitoring unit, a receiver, a digital intermediate frequency unit and a transceiving power supply, wherein the transmitter is used for carrying out power amplification on a modulated signal and generating a radio frequency inquiry signal, the transmitting monitoring unit is used for monitoring the working state of the transmitter, controlling the working parameters of the transmitter and filtering the radio frequency inquiry signal to output an uplink inquiry signal, and the receiver is used for down-converting three paths of input 1090MHz sigma, delta and omega radio frequency response signals into three paths of 60MHz intermediate frequency signals, and modulating the inquiry pulse signal and the test pulse signal to generate a sigma excitation signal, an omega excitation signal and a radio frequency test signal. According to the invention, the equipment integration degree is improved, the internal signal interface is simplified, the cost is reduced, and the adjustment of the interrogator is facilitated.

Description

technical field [0001] The invention relates to the technical field of air traffic control secondary surveillance radar, in particular to an S-mode integrated interrogator. Background technique [0002] At present, the secondary radar of domestic and foreign manufacturers is mainly composed of antenna, antenna driving system, interrogator, recorder and monitoring system. Among them, the interrogator is mainly composed of a transmitter and a receiver. The transmitter of the secondary radar adopts a multi-stage drive amplification method, and the receiver adopts down-conversion to an intermediate frequency signal, and then performs A / D sampling and logarithmic amplification to obtain a digital video signal. The recorder adopts a PFGA and DSP chip The CPCI plug-in is used for signal processing. This plug-in not only needs to decode the downlink digital video signal, but also generates an inquiry pulse signal according to the working parameters of the whole machine. It is limit...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose an S-mode integrated interrogator in order to solve the problems of large volume, large cabinet space occupation, complex interface, various signal types, difficult debugging and high cost of the interrogator; The integration level simplifies the internal signal interface, reduces the cost, and facilitates the adjustment of the interrogator;

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