Millimeter-wave radar based detection method for object throwing from height

Abstract

The invention discloses a millimeter-wave radar based detection method for object throwing from a height. An antenna array module of a millimeter-wave radar is connected with a millimeter wave transceiver module so as to send millimeter wave emission signals and receive scattered echo signals, echoes are received after that radio waves of the millimeter-wave radar are sent out, position data of atarget is measured according to time difference between receiving and sending, a calibration relation is established between the millimeter-wave radar and a camera, and time difference between a millimeter-wave radar sensor and a camera sensor is synchronized through a coordinate transformation method under dead reckoning; and a region of interest is determined through the millimeter-wave radar, and finally object throwing from the height is located through an image algorithm. The detection method has the following advantages that 1, the antenna aperture is small, the beam is narrow, the tracking and guiding precision is high, monitoring at low elevation angle is easy to perform; 2, the millimeter wave radar can realize extremely high angle, distance and speed resolution; and 3, the Doppler frequency is high, and the slow and vibration targets can be effectively detected and identified. Via the method, an obstacle can be more effectively detected by fusing information captured by the radar and the camera.

Description

technical field [0001] The invention belongs to the technical field of bus radar detection, and in particular relates to a method for detecting high-altitude parabolic objects based on millimeter-wave radar. Background technique [0002] The existing technical solution is to use the control unit to control the transmitter to send the detection signal, the reflector receives the detection signal and reflects the detection signal to the first row of receivers, the reflector rotates and reflects the detection signal to the second row of receivers, By analogy, after the reflector rotates, it reflects the detection signal to the Nth row of receivers; the control unit receives the feedback signal sent by the first row to the Nth row of receivers, and judges whether there is a signal according to the feedback signal. High-altitude parabola, and control the high-definition camera to rotate and collect images under the condition of high-altitude parabola. [0003] The objective shor...

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Problems solved by technology

[0004] (1) In the scheme, the receiver is used to receive the signal, and the installation should correspond to the uniform distribution of the buildings, so the installation is difficult for the construction personnel, and it is easy to install wrongly and cause the signal reception to be inaccurate

[0005] (2) The receiver and reflector are used in the scheme. Although the cost is low, the reflection accuracy is poor, which cannot meet the accurate detection of high-altitude parabolas

[0006] (3) Common solutions can be used for fixed-range detection, but cannot be used on moving vehicles, and cannot solve the purpose of bus detection

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