Radar Signal Processing Dynamic Load Management
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Solution Overview
Problem
Existing radar devices face challenges in improving target detection accuracy while maintaining processing performance, particularly when dealing with high processing loads, which can lead to decreased accuracy due to the need to discard target data and perform extrapolation based on past estimates.
Innovation Solution
A radar device with a signal processing unit, monitoring unit, and changing unit that dynamically adjusts processing conditions by reducing the number of processing objects and loop repetitions during high load states, ensuring that subsequent-stage processes are not stopped, thereby maintaining detection accuracy and performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of processing objects is reduced during high load states, then the processing performance is improved, but the target detection accuracy deteriorates
Solution Approach 1:
The patent applies dynamics by making the processing condition changeable based on the processing load state. The system dynamically adjusts the number of processing objects and loop repetitions according to whether the signal processing unit is in a high load state or normal state, allowing the system to adapt between processing performance and detection accuracy requirements
Solution Approach 2:
The patent changes key parameters including the number of processing objects, number of loop repetitions, and processing conditions based on the load state. During high load states, the system reduces these parameters to maintain processing performance, while during normal states, it increases them to improve detection accuracy
2Productivity
If target data is discarded during high load states, then the processing load is reduced, but the target detection accuracy deteriorates due to extrapolation
Solution Approach 1:
The patent applies partial action by selectively processing only the necessary number of target data items based on the load state. During high load states, the system processes a reduced number of items (partial action) to maintain performance, while during normal states, it processes all items (excessive action relative to minimum requirements) to ensure accuracy
3Loss of time
If the number of loop repetitions is reduced during high load states, then the processing time is reduced, but the detection accuracy deteriorates
Solution Approach 1:
The system dynamically adjusts the number of loop repetitions based on the processing load state. During high load states, the number of loop repetitions is reduced to minimize processing time, while during normal states, it is increased to improve detection accuracy through more comprehensive signal processing
Data Source
AI summary
There is provided a radar device which detects targets by performing a signal processing procedure based on a frequency-modulated continuous wave and the reflected waves of the transmission wave from the targets. A signal processing unit is configured to periodically perform the signal processing procedure based on beat signals which are differential waves between the transmission wave and the reflected waves. A monitoring unit is configured to monitor each of processing states of processes which are sequentially performed in the signal processing procedure. A changing unit is configured to change a processing condition for the subsequent-stage processes of a process, according to the processing state of the process, if the monitoring unit detects that the process is in a high load state, from the processing states.