Radar Target Tracking via Echo Mergence Prediction
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Solution Overview
Problem
Radar devices face challenges in accurately tracking targets when multiple echoes merge, leading to potential erroneous tracking and loss of target, especially in situations where echo shapes are similar or change due to observation conditions.
Innovation Solution
Incorporating a tracking processing unit, a merging possibility calculating unit, and a preliminary handling processing unit to predict and prepare for echo mergence by adjusting control gains, responsiveness, and display settings, allowing for stable target tracking even during mergence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If echo data is selected based on features of a shape, then unnecessary echoes are not erroneously selected as targets, but tracking may be lost when echo shapes change due to observation situations
Solution Approach 1:
The patent changes the parameter used for echo selection from static shape features to dynamic movement information (position and velocity). The merging possibility calculating unit computes echo mergence possibility based on movement parameters, allowing the system to adapt to changing observation situations while maintaining reliable tracking even when echo shapes vary.
2Productivity
If multiple echoes merge temporarily, then tracking may continue normally after re-separation, but erroneous tracking may start when shapes before mergence are similar
Solution Approach 1:
The patent applies preliminary action by calculating echo mergence possibility in advance based on movement information before actual mergence occurs. The merging possibility calculating unit continuously monitors position and velocity to predict potential mergence events, allowing the system to prepare appropriate responses beforehand and prevent erroneous tracking when echoes re-separate after temporary mergence.
3Measurement precision
If echo shapes are used for target identification, then similar-shaped echoes cannot be distinguished, but adding more features increases system complexity
Solution Approach 1:
The patent extracts the most critical parameter for echo differentiation, which is movement information (position and velocity), while discarding less reliable shape features. This selective extraction approach achieves accurate target identification without the complexity of processing multiple echo features, focusing only on the parameters that provide sufficient discrimination capability.
Data Source
AI summary
To provide a radar device capable of tracking a target accurately and stably, taking into account the possibility that a plurality of echoes may merge. A radar device is provided with a tracking processing unit, a merging possibility calculating unit and a preliminary handling processing unit. The merging possibility calculating unit calculates an echo merging possibility, which is the possibility that echo merging, whereby a plurality of echoes become integrated, will occur in the future, based on movement information including the position and speed of a target. The preliminary handling processing unit performs an advance handling process, which is a process for handling future occurrences of echo merging, based on the echo merging possibility.