Continuous wave radar through-wall detection system

Abstract

The invention discloses a continuous wave radar through-wall detection system comprising a radar head device and a plurality of display devices. The system is characterized in that a millimeter-wave transceiver module, a transmitting antenna and a receiving antenna are arranged on the radar head device. The millimeter-wave transceiver module includes a transmitting part and a receiving part; the transmitting part contains a sweeping frequency source, a coupler, and a power amplifier, wherein the sweeping frequency source, the coupler, and the power amplifier are successively connected; and the receiving part includes a low-noise amplifier, an image rejection mixer, a band rejection filter, an intermediate-frequency matching filter and a hand-operated gain control circuit. And the display devices receive images and data from the radar head device by a wireless transmission module. According to the invention, because of multiple display devices, a target can be detected by the user at different positions. The detection radar with the millimeter-wave frequency-modulation continuous wave system can meet requirements of high-resolution imaging and target identification of through-wall detection; and a saturated phenomenon during short-distance target detection by the radar can be avoided.

Description

technical field [0001] The invention relates to a radar detection system, in particular to a continuous wave radar penetration detection system. Background technique [0002] In recent years. The demand for equipment in anti-terrorism, anti-riot, disaster relief and other aspects in the world has promoted the continuous development of through-wall detection technology. Due to the high directional accuracy, large radar cross-sectional area, strong anti-interference ability, and strong ability to distinguish metal targets from the surrounding environment, millimeter-wave radar provides a good technical basis for wall-penetrating detection. The existing technology is traditional multi-radar Head multi-display system, this kind of multi-display system connects the designated radar head with the designated display to form a radar system by switching switches. In continuous wave radar, the receiver detects the beat frequency, and the sensitivity time control circuit cannot be use...

AI Technical Summary

Problems solved by technology

Due to the high directional accuracy of millimeter wave radar, large radar cross-sectional area, strong anti-interference ability, and strong ability to distinguish metal targets from the surrounding environment, these provide a good technical basis for wall-penetrating detection. The existing technology is traditional multi-radar Head multi-display system, this kind of multi-display system connects the designated radar head and the designated display to form a radar system by switching switches. In continuous wave radar, the receiver detects the beat frequency, and the sensitivity time control circuit cannot be used. method to extend the dynamic range

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