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Radar sensing method and system based on extremely short distance millimeter waves

A millimeter-wave radar, extremely short-range technology, applied in radio wave measurement systems, radio wave reflection/re-radiation, utilization of re-radiation, etc. , to achieve the effect of perfecting environmental modeling, ensuring measurement, and reducing the cost of detection and perception

Pending Publication Date: 2020-04-10
的卢技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above-mentioned existing problems of limited application of detection perception and environmental modeling for extremely close-range objects, the present invention is proposed

Method used

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  • Radar sensing method and system based on extremely short distance millimeter waves
  • Radar sensing method and system based on extremely short distance millimeter waves
  • Radar sensing method and system based on extremely short distance millimeter waves

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Embodiment 1

[0032] refer to figure 1 , which is the first embodiment of the present invention, provides a sensing method based on extremely short-distance millimeter-wave radar, such as figure 1 , a very short-distance millimeter-wave radar sensing method includes utilizing a radio frequency antenna module 100 to radiate an FMCW signal to a target; receiving a radar echo signal reflected from the target; converting the signal into an intermediate frequency signal and sampling with an ADC; processing the received signal, and Output the detected target; measure the distance, speed and angle of the target; transmit data and obtain perceptual information. Millimeter waves have little attenuation when propagating through the atmospheric window, and are less affected by natural light and thermal radiation sources. Using the narrow beam and low sidelobe performance of millimeter wave antennas, low-elevation precision tracking radars and imaging radars can be realized; while FMCW radars The cont...

Embodiment 2

[0079] refer to Figure 2 to Figure 7 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that it provides a sensing system based on extremely short-distance millimeter-wave radar, such as image 3, a sensing system based on extremely short-distance millimeter-wave radar includes a radio frequency antenna module 100, a radio frequency transceiver module 200, a signal processing module 300, and a data input and output module 400, and the radio frequency antenna module 100 adopts a patch single array element antenna, including a transmitting antenna 101 With the receiving antenna 102, there are two transmitting antennas 101 and four receiving antennas 102, which are kept consistent on the length of the feeder line. The radio frequency signal is radiated to the space through the transmitting antenna 101, and the receiving antenna 102 receives the electromagnetic wave signal in the space and outputs it to the radio fr...

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Abstract

The invention discloses a radar sensing method and system based on extremely short distance millimeter waves. The method comprises the following steps: radiating an FMCW signal to a target by using aradio frequency antenna module, receiving a radar echo signal reflected by the target, converting the signal into an intermediate frequency signal, sampling and processing the received signal by usingan ADC, outputting the detected target, measuring the distance, speed and angle of the target, and transmitting data. Environmental modeling and object classification can be perfected in an extremelyshort distance range, the method is very important for researching and developing an advanced driving assistance algorithm and an automatic driving function, a larger FOV ensures that fewer sensors are used for sensing the surrounding 360-degree environment, and the detection sensing cost is reduced; and the height measuring function is achieved, and measurement in the height direction is guaranteed.

Description

technical field [0001] The present invention relates to the technical field of millimeter-wave radar, in particular to a sensing method and system based on extremely short-distance millimeter-wave radar. Background technique [0002] The development of millimeter-wave radars began in the 1940s. In the 1950s, millimeter-wave radars (working wavelengths of about 8 mm) appeared for airport traffic control and marine navigation, showing high resolution, high precision, small antenna aperture, etc. Superiority. However, due to technical difficulties, the development of millimeter-wave radar was once restricted. As the operating frequency increases, the output power and efficiency of the power source decrease, and the receiver mixer and transmission line losses increase. After the mid-1970s, millimeter wave technology has made great progress, and some better power sources have been successfully developed: Solid-state devices such as avalanche tubes and Gunn oscillators, thermion...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/42G01S13/58G01S13/72G01S7/35G01S7/41
CPCG01S13/42G01S13/584G01S13/72G01S7/41G01S7/35G01S7/352
Inventor 王震
Owner 的卢技术有限公司
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