One-bit Quantization for Multi-Radar Target Tracking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing single-radar-node systems face challenges such as insufficient resolution, limited data processing capabilities, and high storage and transmission bandwidth requirements, making it difficult to achieve accurate target tracking in complex maritime environments and multi-target scenarios, especially in adverse weather conditions.
Innovation Solution
A one-bit quantization based target tracking method that uses a multi-radar node system to acquire echo data, perform one-bit quantization, estimate distance and direction of arrival information, determine position information, and fuse data to obtain accurate tracking points and trajectories.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional high-bit-rate signal data processing is used, then measurement precision and detection accuracy are improved, but storage bandwidth and data transmission requirements increase significantly
Solution Approach 1:
The patent extracts only the most essential information from the radar echo signal by performing one-bit quantization, keeping only the sign bit of the in-phase and quadrature components. This extraction principle reduces the data volume from multi-bit to one-bit per sample while retaining the critical amplitude and phase information needed for target detection and tracking.
Solution Approach 2:
The patent changes the quantization parameter from multi-bit representation to one-bit representation. By transforming the signal representation from high-precision multi-bit data to simplified one-bit data, the system achieves drastic data compression while maintaining the ability to perform accurate target detection through specialized processing algorithms.
2Device complexity
If single-radar-node systems are used, then device complexity is reduced, but measurement precision and tracking accuracy deteriorate in complex maritime environments
Solution Approach 1:
The patent merges multiple radar nodes into a coordinated network system. By combining the detection capabilities of multiple radar nodes that observe the same target from different positions, the system achieves superior tracking accuracy and robustness in complex maritime environments while maintaining manageable system complexity through centralized coordination.
Solution Approach 2:
The patent adds the spatial dimension by deploying multiple radar nodes at different geographical locations. This dimensional expansion allows the system to observe targets from multiple angles and positions, providing redundant measurement information that significantly improves tracking accuracy and reliability in adverse weather and low-visibility conditions.
3Quantity of substance
If one-bit quantization is applied, then storage bandwidth and data processing requirements are reduced, but information loss increases
Solution Approach 1:
The patent replaces traditional mechanical signal processing approaches that rely on high-bit-rate data transmission with an information-theoretic approach. By using one-bit quantized data combined with specialized estimation algorithms, the system substitutes brute-force data processing with intelligent signal recovery methods that extract maximum information from minimal data.
Solution Approach 2:
The patent introduces intermediate processing steps including fast Fourier transform and covariance matrix computation that act as mediators between the one-bit quantized data and the final target parameter estimation. These intermediary operations recover amplitude, phase, and frequency information that would otherwise be lost in the quantization process.
Data Source
AI summary
A one-bit quantization based target tracking method, device, terminal, and storage medium. The method includes acquiring echo data of each radar node in a multi-radar node system for a target; performing one-bit quantization on each echo data to obtain one-bit data; estimating a distance information and a direction of arrival of signal of the target relative to each radar node based on the one-bit data; determining, based on the distance information and the direction of arrival of signal, a position information of the target relative to each radar node; fussing the position information to obtain a tracking point of the target. By adopting one-bit quantization and multi-base site trajectory fusion processing, high-precision detection and tracking of ocean monitoring targets are achieved, which significantly enhances data processing speed and anti-interference capability, while reducing the demand for storage and transmission resources, ensuring reliability and real-time performance in complex environments.