Radar ranging method and device
A radar ranging and radar technology, applied in the field of radar ranging methods and devices, can solve problems such as low accuracy and interference
Active Publication Date: 2022-04-08
HUAWEI TECH CO LTD
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Problems solved by technology
[0004] However, in practical applications, since a part of the above-mentioned radar signal may be reflected back by the inner wall or window of the radar ranging device during transmission, thereby generating stray echo signals, the echo signal received by the receiver is It may include both the echo signal of the target and the above-mentioned spurious echo signal, that is, the stray echo signal will interfere with the echo signal of the target
Therefore, the accuracy of ranging the target through the echo signal received by the receiver is low
Method used
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[0104] The technical solution in this application will be described below with reference to the accompanying drawings.
[0105] figure 1 A schematic block diagram (top view) of a radar ranging device 100 to which the radar ranging method provided in the embodiment of the present application is applied is shown. like figure 1 As shown, the radar ranging device 100 may include a signal processing device 110, at least one signal transceiver group ( figure 1 The signal transceiver group 1) and the reflection device 140 are shown in . The signal transceiver group 1 includes a transmitter 120 and N receivers ( figure 1 The receivers 131 to 13N are shown in , and N is an integer greater than 0. The signal processing device 110 , the transmitter 120 and the receiver 131 - the receiver 13N are arranged in a cavity formed by a window and a housing. The signal processing device 110 is respectively connected to the transmitter 120 and the receiver 131 - the receiver 13N through a commu...
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The radar ranging method and device provided in the present application can be applied to the field of sensor technology, such as the field of radar ranging, and can improve the accuracy of radar ranging. The method includes: sending a first radar signal from a first field of view angle by a first transmitter; receiving a first echo signal from the first field of view angle by a first receiver, the first echo signal including a first target The echo signal of the first transmitter and the first receiver belong to the first radar channel; according to the echo signal of the first target, the first target is subjected to ranging processing; the first echo signal also includes A stray echo signal, the stray echo signal includes an echo signal generated by the reflection of the first radar signal by an obstacle, at least one first signal parameter of the stray echo signal corresponds to the identification of the first radar channel And / or the first field of view angle, the at least one first signal parameter includes at least one amplitude and / or a first delay time at a first sampling moment.
Description
technical field [0001] The present application relates to the field of sensor technology, and more specifically, to a radar ranging method and device in the field of sensor technology. Background technique [0002] With the development of society and the advancement of science and technology, smart cars are gradually entering people's daily lives. Sensors play a very important role in the unmanned and intelligent driving of smart cars. Sensors can include millimeter-wave radar, lidar, and ultrasonic radar, cameras, and more. [0003] The ranging principle of the radar ranging device is to send a radar signal through the transmitter of the radar ranging device, and receive the corresponding target generated by the radar signal reflected by the target within the field of view through the receiver of the radar ranging device. The echo signal of the target is calculated by measuring the delay time from sending the radar signal to receiving the echo signal of the target to calc...
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IPC IPC(8): G01S13/08G01S13/10G01S7/41
CPCG01S13/08G01S13/103G01S7/411G01S7/414G01S7/038G01S7/4876G01S7/4816G01S7/4812G01S17/10G01S17/42G01S7/497
Inventor 韩二江石现领
Owner HUAWEI TECH CO LTD