Distributed Radar Signal Processing for Scalable RF Channel Integration
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Solution Overview
Problem
Existing radar systems face challenges in scalability, cost, and complexity due to the need for centralized processing and synchronization of multiple radio frequency chips.
Innovation Solution
The radar system distributes part or all of the signal processing among multiple radar units, each with RF channels and a processing module, allowing for decentralized processing and easier integration of more RF channels, thereby improving detection range and angle resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If centralized processing is used in existing radar systems, then signal processing can be performed uniformly, but the system complexity and development difficulty increase
Solution Approach 1:
The patent divides the centralized signal processing function into distributed processing units, where each radar unit performs local signal processing independently. This segmentation reduces system complexity while maintaining processing consistency through standardized processing algorithms executed at each distributed node.
Solution Approach 2:
The patent introduces an intermediary processing layer where intermediate results from distributed radar units are collected and further processed. This mediator approach allows uniform processing standards to be applied while distributing the actual processing workload, reducing overall system complexity.
2Measurement precision
If more RF channels are integrated to build large-scale radar systems, then detection range and angle resolution improve, but the cost and difficulty of synchronization increase
Solution Approach 1:
The patent segments the radar system into independent radar units, each with its own RF channels and processing capabilities. This allows the system to scale by adding more units without increasing synchronization complexity, as each unit operates semi-independently with standardized interfaces.
Solution Approach 2:
The patent changes the synchronization approach from time-based centralized coordination to a standardized parameter-based interface where each radar unit operates with consistent processing parameters. This allows more RF channels to be integrated without proportionally increasing synchronization difficulty.
3Reliability
If a processor provides synchronization signals to multiple RF chips, then signal synchronization is achieved, but the processing capability requirement for the processor increases
Solution Approach 1:
The patent segments the processing function so that each radar unit has its own processing capabilities rather than relying on a centralized processor. This distributes the processing load, reducing the processing capability requirement for any single processor while maintaining synchronization through standardized interfaces.
Solution Approach 2:
Each radar unit performs its own signal processing locally, serving itself rather than relying on external centralized processing. This self-service approach reduces the processing burden on centralized processors while maintaining system-wide synchronization through standardized data exchange protocols.
4Reliability
If centralized processing is used, then data processing is unified, but the scalability of the radar system is limited
Solution Approach 1:
The patent divides the radar system into modular, independent radar units that can be added or removed without affecting the core processing architecture. This segmentation enables easy scalability while maintaining data processing uniformity through standardized processing algorithms executed at each unit.
Solution Approach 2:
The patent designs radar units with universal, standardized interfaces and processing capabilities that can function independently or in combination with other units. This universality allows the system to scale flexibly while maintaining consistent data processing across all units.
Data Source
AI summary
A radar system and control method thereof is disclosed. The radar system comprises a plurality of radar units, each comprising: one or more radio frequency (RF) channels configured to receive a reflected signal and then generate an analog input signal according to the reflected signal; and a processing module connected with all the RF channels and configured to sample the analog input signal to obtain a digital signal and perform the first digital signal processing on the digital signal to obtain intermediate data, wherein when the plurality of radar units work jointly, a designated radar unit performs the second digital signal processing on the plurality of intermediate data provided by the plurality of radar units, thereby obtaining result data of the radar system.