LPRF HPRF Radar Target Detection Merging
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Solution Overview
Problem
There is no existing literature on how to link multiple radar apparatuses to detect targets effectively, especially when they emit radio waves with different Pulse Repetition Frequencies (PRFs).
Innovation Solution
A radar apparatus configuration that includes both Low Pulse Repetition Frequency (LPRF) and High Pulse Repetition Frequency (HPRF) systems, where each system has a signal processor, a range-velocity map generator, an interpolation processor, an integration processor, and a comparison processor. These processors work together to detect the position and velocity of targets based on information from both LPRF and HPRF systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple radar apparatuses with different PRFs are linked to detect targets, then detection accuracy and noise resistance are improved, but device complexity increases
Solution Approach 1:
The patent combines multiple radar apparatuses with different PRFs (LPRF and HPRF) into a unified detection system. The LPRF-Radar and HPRF-Radar are integrated through a common target detection processor that receives and processes information from both radars, merging their detection capabilities to achieve improved accuracy while managing system complexity through coordinated operation.
Solution Approach 2:
The target detection processor serves as a universal processing unit that handles information from both LPRF and HPRF radars. It performs multiple functions including generating range-velocity maps, interpolating data, integrating information, and detecting targets, thereby reducing overall system complexity through multi-functional processing.
2Reliability
If LPRF and HPRF radars process signals separately, then processing simplicity is maintained, but detection reliability decreases
Solution Approach 1:
The patent merges the signal processing paths of LPRF and HPRF radars by feeding both types of signals into a single target detection processor. This unified processing approach combines the advantages of both PRF systems, improving detection reliability through diverse information sources while avoiding the complexity of completely separate processing systems.
Solution Approach 2:
The target detection processor acts as an intermediary that receives raw signals from both LPRF and HPRF radars and performs intermediate processing steps including range-velocity map generation, interpolation, and integration. This intermediary processing enables reliable target detection by harmonizing the different PRF data streams.
3Measurement precision
If range-velocity map interpolation is performed, then measurement precision improves, but processing time increases
Solution Approach 1:
The patent performs preliminary processing of radar signals into range-velocity maps before the interpolation step. By pre-organizing the data structure and performing initial processing operations, the system prepares the data in advance, which reduces the overall processing time required for interpolation and subsequent target detection operations.
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 configuration allows for the effective linking of multiple radar apparatuses emitting radio waves with different PRFs, enhancing target detection by reducing noise interference and improving detection accuracy.
Implementation Method 1
an LPRF-Radar to emit an LPRF radio wave toward atmosphere and receive a reflection wave reflected by a target; and an HPRF-Radar to emit an HPRF radio wave toward atmosphere and receive the reflection wave reflected by the target
Data Source
AI summary
A radar apparatus according to the present disclosure is provided with: an LPRF radar device that emits an LPRF radio wave toward the atmosphere and that receives a reflection wave reflected by a target; and an HPRF radar device that emits an HPRF radio wave toward the atmosphere and that receives a reflection wave reflected by the target. The LPRF radar device (1000) and the HPRF radar device each include a signal processing system having an LPRF system and an HPRF system. The radar apparatus is further provided with a target detection processing unit that detects the position and velocity of the target on the basis of information transmitted from the signal processing system included in the LPRF radar device and information transmitted from the signal processing system included in the HPRF radar device.