A high-resolution and strong penetrating three-dimensional radar life detection and positioning device

Abstract

The invention discloses a high-resolution and strong penetrating three-dimensional radar life detection and positioning device, which mainly includes a transmitting subsystem, a receiving subsystem, a multi-channel data acquisition system, a main control unit, a wireless wire-controlled terminal, and a power supply module. The nanosecond-level high-amplitude pulse transmitting subsystem composed of a pulse generating circuit, three avalanche triodes, and a resonant trigger circuit receives echoes through the receiving subsystem, and is processed by a noise reduction unit, a filter unit, and a signal amplification unit. The multi-channel data acquisition system performs sampling processing, and the results of the sampling processing are input to the main control unit of the DSP data processing unit and WiFi communication module running the Linux system, and conduct two-way data communication to the wireless display and control terminal through 2.4G WiFi. In a word, the present invention can realize three-dimensional positioning life detection, prevent the distortion of pulse wave, and improve the clarity of three-dimensional simulated images and the strength of received weak signals.

Description

technical field [0001] The invention belongs to the field of life detection radar, in particular to a high-resolution and strong penetrating three-dimensional radar life detection and positioning device. Background technique [0002] The radar life detectors currently on the market are all one-dimensional single-shot and single-receive radars, which can only achieve effective detection in the distance dimension, and cannot accurately locate the specific location of the trapped person; and due to the complexity of the accident scene environment, this kind of One-dimensional radar life detectors have poor penetration and large false alarms, thus delaying precious rescue time. [0003] In the prior art, when the radar scanning process is performed on the detected position, the distortion and tailing effect of the pulse wave during the radiation and echo of the transmitted pulse wave cannot be guaranteed, resulting in the instability of the received parameters, which seriously a...

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Problems solved by technology

[0002] The radar life detectors currently on the market are all one-dimensional single-shot and single-receive radars, which can only achieve effective detection in the distance dimension, and cannot accurately locate the specific location of the trapped person; and due to the complexity of the accident scene environment, this kind of One-dimensional radar life detectors have poor penetration and large false alarms, which delay precious rescue time

[0003] In the prior art, when the radar scanning process is performed on the detected position, the distortion and tailing effect of the pulse wave during the radiation and echo of the transmitted pulse wave cannot be guaranteed, resulting in the instability of the received parameters, which seriously affects The working process of the detection, plus in the complex environment, there are many frequencies of interference sound around, if the noise reduction processing cannot be performed, the interference to the received signal will be increased, and in the process of search and rescue at the same time, due to the cover And occluded targets, especially when the vital signs and vital signs are low, it is difficult to capture the signal of low breathing and heartbeat frequency, which affects the detection of the target. Since most of them have no early warning function, the target position cannot be accurately narrowed when scanning The scope of the search will also increase the workload of the search, increase the workload of processing data into clear images, and ensure the accuracy of the internal structure of the target location

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