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FMCW anti-collision radar multi-target detecting and tracking system and method

A target detection and tracking system technology, applied in radio wave measurement systems, measurement devices, image analysis and other directions, can solve problems such as the inability to meet the detection and tracking of multiple targets ahead, and achieve enhanced reliability and real-time performance, high resolution, The effect of measuring long distances

Inactive Publication Date: 2014-12-24
NANJING UNIV OF SCI & TECH
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  • Summary
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  • Claims
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AI Technical Summary

Problems solved by technology

However, the FFT transformation and signal strength analysis methods used in the past for FMCW radar information have been unable to meet and realize the functions required for multi-target detection and tracking ahead.

Method used

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  • FMCW anti-collision radar multi-target detecting and tracking system and method
  • FMCW anti-collision radar multi-target detecting and tracking system and method
  • FMCW anti-collision radar multi-target detecting and tracking system and method

Examples

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Embodiment

[0050] There are 4 vehicle targets in front of the vehicle: minivan, small car, large truck, and minivan. For the convenience of display, the sequence diagram is intercepted, such as Figure 9 As shown, frames 2, 4, 6, 8, 10, 12, 14, and 16 are shown respectively. The four typical target codes displayed in each frame are 1, 2, 3, and 4 respectively. Target 1 is a minivan with a moving speed of 90 km / h and goes straight ahead to the right; target 2 is a small car with a moving speed of 100km / h, go straight ahead to the right; target 3 is a large truck, moving at a speed of 82km / h, going straight to the right; target 4 is a small truck, moving at a speed of 80km / h, going straight to the right.

[0051] There are two main indicators for evaluating the tracking effect of each target in this system:

[0052] (1) Center deviation distance

[0053] Calculate the distance difference between the target center of the tracking result and the actual position (according to the manual ma...

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Abstract

The invention discloses an FMCW anti-collision radar multi-target detecting and tracking system and method. The system comprises a radar array processing unit, a target detecting and estimating unit, a post-processing unit and a debugging unit. The radar array processing unit sends target information in front of a vehicle to the target detecting and estimating unit through a CAN bus for multi-target rapid detecting and tracking, and tracking results and obstacle avoidance early warning information are sent to the post-processing unit and the debugging unit through RS 422 serial ports respectively. The post-processing unit displays the received target tracking results and the obstacle avoidance early warning information and performs voice reminding. In the system debugging process, the debugging unit displays and evaluates intermediate data and the tracking results and controls the target detecting and estimating unit to be started or shut down. Radar data processing is converted into image processing, and the effective means is provided for meeting the application requirement for high-reliability anti-collision radar multi-target detecting of an automobile, a tramcar and other traffic systems.

Description

technical field [0001] The invention relates to the technical field of intelligent information processing, in particular to an FMCW anti-collision radar multi-target detection and tracking system and method. Background technique [0002] The functions of the FMCW anti-collision radar multi-target detection and tracking system include: connecting the FMCW radar array processing unit, target detection and estimation unit, post-processing unit and debugging unit through hardware to form a multi-target detection and tracking system. The radar array processing unit adopts the FMCW system, and the maximum measurement distance is 200m. The distance measurement adopts LFM signal with a resolution of about 1m; the speed measurement adopts a large time-width constant carrier frequency pulse signal; the radar adopts two antennas with separate transceivers, the beam width of the transmitting antenna is 20°, and the azimuth angle coverage is ±10° The receiving antenna has 16 sub-antenna...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/72G01S13/93G06T7/20
CPCG01S13/726G01S13/931G06T7/277
Inventor 白宏阳杨健徐慧琳高以成陈亮熊舒望陈俊任思超
Owner NANJING UNIV OF SCI & TECH
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