Multi-Radar Array for Horizontal Target Tracking
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Solution Overview
Problem
Existing multi-channel radars struggle to accurately track moving targets, particularly those moving horizontally, due to the narrow interval between antennas, which limits the detection of irregular movements.
Innovation Solution
The use of two or more multi-channel radars spaced apart, with a position information combination unit and a velocity vector information calculation unit, to acquire combined position and velocity information of a target, enabling more precise detection and tracking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If multi-channel radar with narrow antenna interval is used, then device size is reduced, but target tracking performance in horizontal direction deteriorates
Solution Approach 1:
The patent transitions from a single radar system to a multi-radar array configuration, adding spatial dimensionality to the detection system. By deploying multiple radars at different positions and combining their detection results through signal processing, the system achieves improved horizontal tracking capability while maintaining compact individual device sizes.
2Measurement precision
If Doppler effect is used for velocity detection, then movement toward or away from radar is detected, but horizontal movement detection capability is insufficient
Solution Approach 1:
The patent segments the velocity detection task across multiple radar units, where each radar measures the radial velocity component along its own line of sight. By combining these segmented velocity measurements from different angular positions, the system reconstructs the complete two-dimensional velocity vector, including both radial and horizontal movement components.
Solution Approach 2:
The patent introduces signal processing algorithms as intermediaries that fuse the radial velocity measurements from multiple radars. These algorithms act as mediators to transform the limited radial velocity data into comprehensive two-dimensional velocity information, enabling detection of movement in all directions.
3Extent of automation
If separate prediction model is used for horizontal movement, then predetermined direction movement can be predicted, but irregular movement prediction fails
Solution Approach 1:
The patent implements feedback mechanisms where the multi-radar system continuously updates velocity vector information and uses it to dynamically adjust target tracking predictions. The system incorporates measured velocity data into prediction algorithms, allowing it to adapt to both regular and irregular movement patterns by continuously learning from actual target behavior.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances target detection precision by providing two-dimensional velocity information and improves tracking performance by predicting movement directions without the need for separate prediction models for horizontal movement.
Implementation Method 1
movement in a direction toward or away from the radar is determined using a Doppler effect
Implementation Method 2
vehicle radars mainly use a 77-GHz frequency modulated continuous wave (FMCW) method to measure a delay time
Data Source
AI summary
In an apparatus for detecting a target using a radar according to one aspect of the present invention, a first radar and a second radar, which are multi-channel radars each including a plurality of transmitting antennas and a plurality of receiving antennas, are installed to be spaced apart from each other, and position information of a target and velocity vector information of the target are calculated from first position information and first velocity information of the target acquired from the first radar and second position information and second velocity information of the target acquired from the second radar and then are used to detect and track the target.