W-band digital sum difference injection dynamic target simulation method and device

Abstract

The invention provides a W-band digital sum-and-difference injection hardware-in-the-loop simulation method and device. A W-band frequency conversion module of the device receives the radio frequencysignals emitted by radar, the signals are converted from W-band into baseband signals through a frequency agile local oscillator, five channels of echo signals are converted from baseband signals to W-band signals, and the W-band signals are transmitted to a tested product. An echo baseband signal generation module and an imaging modulation module sample the baseband signals after down-conversionby the W-band frequency conversion module, modulate the echo parameters of a target in the digital domain and generate corresponding imaging echo signals. An inter-channel amplitude-phase consistencycompensation module tests the amplitude-phase error between five channels, and generates a corresponding compensation model. A 5-channel echo modulation module generates 5 channels of echo signals according to the imaging echo signals and other information to simulate the dynamic characteristic of the target. A real-time control module controls the workflow in real time according to the input signals. The ability of the existing hardware-in-the-loop simulation system to realize dynamic simulation of a high-precision imaging target in W band can be expanded.

Description

technical field [0001] The invention relates to the field of radar guidance, in particular to a W-band digital sum difference injection dynamic target simulation method and device, which is used for imaging, identifying and tracking targets in complex environments for digital sum difference radar seekers for W-band active imaging guidance ability to detect. Background technique [0002] The W-band active imaging guidance system can realize the recognition and tracking of short-range targets, and it is a new type of radar short-range precision guidance system. [0003] In order to test the ability of the W-band active imaging guidance seeker to identify and track targets in complex environments, a set of W-band active imaging target simulation methods and devices are needed to simulate the W-band active imaging targets faced by the radar seeker Echo (including clutter, environment, etc.) information. Such devices are generally divided into two methods: space radiation and d...

AI Technical Summary

Problems solved by technology

Such devices are generally divided into two methods: space radiation and direct injection. The simulation of space radiation requires conditions such as shielded darkrooms and array target simulation systems. The large transmission loss of W-band signals affects high-power simulations, and the system is complex and costly. Injection-type hardware-in-the-loop simulation method is simple in structure and low in cost

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