Multi-Waveform Radar Tracking for Sidelobe-Resistant Detection
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Solution Overview
Problem
Existing radar systems face challenges in effectively detecting and tracking targets with low detection thresholds while minimizing false signals and grating sidelobes, particularly when using multiple transmitter and receiver elements coherently.
Innovation Solution
A radar system and method utilizing independent transmission from multiple groups of transmitter and receiver arrays, allowing for incoherent operation and cross-checking between these groups, which enhances target detection and tracking by reducing grating sidelobes and enabling hybrid detection across multiple transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple transmitter and receiver elements operate coherently to enhance target detection, then detection sensitivity is improved, but false signals and grating sidelobes increase
Solution Approach 1:
The patent divides the transmitter array into multiple independent transmitter groups and the receiver array into multiple receiver groups. Each group operates independently with its own waveform, allowing the system to process signals from multiple groups separately and combine results, thereby reducing grating sidelobes while maintaining detection sensitivity through hybrid coherent-incoherent processing.
Solution Approach 2:
The patent employs multi-waveform transmission where different transmitter groups use different waveforms (e.g., different chirp rates, frequencies, or modulation schemes). By changing waveform parameters across groups and using advanced signal processing, the system achieves superior target detection while minimizing false signals and grating sidelobes through waveform diversity.
2Object-generated harmful factors
If multiple transmitter groups transmit independently to reduce grating sidelobes, then false signals are reduced, but detection capability for low-threshold targets decreases
Solution Approach 1:
The patent merges the detection results from multiple incoherently operating transmitter groups through hybrid processing. By combining the individual group detections with advanced signal processing techniques, the system achieves both false signal reduction from independent group operation and enhanced detection capability through cooperative integration of multiple groups' data.
Solution Approach 2:
The patent uses multiple copies of transmitter and receiver elements organized into separate groups, each capable of independent operation. These copies transmit different waveforms and can be processed independently, allowing the system to cross-check detections and reduce false signals while maintaining overall detection sensitivity through the combined information from multiple copies.
3Measurement precision
If coherent processing is used to improve target tracking, then tracking accuracy is enhanced, but system complexity increases
Solution Approach 1:
The patent implements a dynamic processing approach where the system can adaptively select between coherent and incoherent processing modes for different transmitter groups based on operational requirements. This dynamic flexibility allows the system to optimize tracking accuracy when needed while managing complexity by using simpler incoherent processing for other scenarios, with the ability to switch between modes as conditions change.
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
The system achieves superior target detection and tracking by reducing grating sidelobes and false signals, while enabling cross-checking and hybrid detection, thereby improving radar performance with advanced AI techniques.
Implementation Method 1
transmitting probe signals, receiving reflected probe signals, and tracking environmental targets
Data Source
AI summary
A system for radar tracking, preferably including one or more transmitter elements, receiver elements, and signal processors, and optionally including one or more velocity sensing modules. A method for radar tracking, preferably including transmitting probe signals, receiving reflected probe signals, and/or tracking environmental targets, and optionally including decoding the set of received probe signals. The method is preferably implemented using a radar system, but can additionally or alternatively be implemented using any other suitable wave-based detection system.