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Echo simulation method and system

An echo simulation and echo signal technology, which is applied in the field of intelligent transportation, can solve the problems of not being suitable for simulating multi-lane or multi-target road scenarios, and cannot meet the needs of simulation verification, and achieves the effect of meeting the needs of simulation verification and wide applicability

Active Publication Date: 2020-05-05
BEIJING JINGWEI HIRAIN TECH CO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limitations of volume, weight and system complexity of the existing vehicle millimeter-wave radar echo simulation system, when performing functional tests on vehicle millimeter-wave radar, only specific scenarios or forms of simulation can be performed, such as Simulation of single-lane or single-target scenarios
However, with the diversification of simulation scenarios, the existing echo simulation method for automotive millimeter-wave radar is no longer suitable for simulating multi-lane or multi-target road scenarios, and the existing echo simulation method can no longer meet the requirements of the overall situation. Automotive millimeter-wave radar simulation verification requirements for vehicle ADAS networking and layout verification

Method used

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  • Echo simulation method and system
  • Echo simulation method and system

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Embodiment 1

[0060] see figure 1 An echo simulation method provided in Embodiment 1 of the present invention, the method is mainly a method for simulating multi-lane or multi-target vehicle millimeter-wave radar echo simulation methods, which can be used in the simulation verification system of the intelligent assisted driving system, specifically , the method may include the following steps:

[0061] S11. Receive the radio frequency transmission signal sent by the vehicle millimeter-wave radar;

[0062] Specifically, the vehicle millimeter-wave radar uses air feed to send the radio frequency transmission signal to the echo simulation system corresponding to the echo simulation method provided by the present invention. spread by radiation. Correspondingly, in a specific application process, the radio frequency transmission signal is received by the receiving antenna in the echo simulation system.

[0063] S12. Generate a local oscillator signal;

[0064] The local oscillator signal is ...

Embodiment 2

[0103] see figure 2 , is a schematic diagram of a typical multi-lane multi-target forward-looking vehicle millimeter-wave radar scene provided by the present invention. In this scene, the vehicle is equipped with a vehicle millimeter-wave radar, and the vehicle millimeter-wave radar serves as a One of the most important environmental sensors in the assisted driving system, it provides road environment variables for the intelligent assisted driving system by detecting the distance, angle and relative speed of road targets.

[0104] exist figure 2 In the scenario of , it can be seen that the road section includes the same lane and the reverse lane, and the same lane includes multiple target vehicles, and the reverse lane also includes multiple target vehicles, that is, each The relative speed and angle of the target vehicle and the vehicle are all changing in real time, and then the echo simulation method provided by the present invention can be applied to figure 2 Multiple...

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Abstract

The invention discloses an echo simulation method and system. The method comprises: receiving a radio frequency transmission signal sent by a vehicle millimeter wave radar; using the generated local oscillator signal to perform down-conversion processing on the radio frequency transmission signal to obtain an intermediate frequency signal; The signal is divided to obtain at least two channels of sub-IF signals; through the preset target parameters corresponding to each channel of sub-IF signals, the parameters of each channel of sub-IF signals are adjusted to generate target IF echo signals corresponding to each channel of sub-IF signals ;Using the local oscillator signal to up-convert the target intermediate frequency echo signal of each channel to obtain the target radio frequency signal corresponding to the target intermediate frequency echo signal of each channel, and send all the target radio frequency signals to the vehicle millimeter wave radar respectively. By simulating multiple targets, the present invention realizes the purpose of satisfying the vehicle millimeter-wave radar simulation verification requirements for the networking and layout verification of the vehicle intelligent assisted driving system.

Description

technical field [0001] The invention relates to the technical field of intelligent transportation, in particular to an echo simulation method and system. Background technique [0002] With the development of various aspects of artificial intelligence technology, the Advanced Driver Assistant System (ADAS for short) has become an important application of artificial intelligence technology in the field of transportation. ADAS is a comprehensive technology that integrates environmental perception, planning and decision-making, and task execution. It is one of the important development directions in the field of artificial intelligence today. As one of the most important environmental sensors in the intelligent assisted driving system, the millimeter-wave radar for vehicles plays the role of the "eyes" of the car. It provides road environment variables for ADAS by detecting the distance, angle and relative speed of road targets. The planning and decision-making unit of ADAS mak...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/40
CPCG01S7/4052G01S7/4073
Inventor 顾翔张诣萌万亮陈上楼
Owner BEIJING JINGWEI HIRAIN TECH CO INC
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