Auto-Encoded Radar Signal Reception for Bandwidth-Limited Vehicles
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Solution Overview
Problem
Current radar systems for automated vehicles face challenges in transferring detailed radar data due to bandwidth limitations, with existing compression methods introducing noise artifacts and not utilizing the full potential of raw signal information.
Innovation Solution
An auto-encoding device embedded in the radar system encodes raw radar signals using non-linear functions, allowing for efficient data transfer without arbitrary thresholds, and a decoding device reconstructs the signals with minimal deviation, optimizing data transfer rates and reducing noise artifacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If threshold-based compression is applied to radar raw signals, then data transfer rate is improved, but measurement precision deteriorates due to noise artifacts and information loss
Solution Approach 1:
An auto-encoding device is introduced as an intermediary component between the radar receiving element and the data processing unit. This device encodes raw radar signals into a compressed intermediate representation that preserves essential information while reducing data volume, thereby enabling high-rate transfer without the harmful artifacts introduced by traditional threshold-based compression methods
Solution Approach 2:
The patent transforms the radar signal representation by changing its parameters through auto-encoding. The raw signal parameters are mapped to a compressed latent space representation and then reconstructed, allowing efficient compression while maintaining signal fidelity and avoiding the information loss inherent in threshold-based approaches
2Device complexity
If arbitrary noise thresholds are used for data compression, then device complexity is reduced, but reliability deteriorates due to introduced artifacts
Solution Approach 1:
The auto-encoding device serves as a reliable intermediary that replaces simple but harmful threshold-based compression. It provides a sophisticated yet systematic approach to signal compression that maintains signal integrity through learned transformations rather than arbitrary thresholding
Solution Approach 2:
The auto-encoding device incorporates feedback mechanisms where the encoded representation is reconstructed and compared with the original signal. This feedback loop ensures that the compression process preserves essential signal characteristics and eliminates harmful artifacts through iterative optimization
3Measurement precision
If full raw signal data is transferred without compression, then measurement precision is maintained, but loss of time increases due to bandwidth limitations
Solution Approach 1:
The patent segments the raw radar signal data into essential and redundant components through auto-encoding. By identifying and preserving only the critical information in a compressed form, it achieves rapid data transfer while maintaining the fidelity needed for precise measurements and sophisticated applications
Data Source
AI summary
A radar system suitable for an automated vehicle comprises at least one receiving element configured to detect reflected radar signals reflected by an object in a field-of-view of the system. The receiving element is further configured to generate detected signals indicative of the reflected radar signals detected by the receiving element. Furthermore, an auto-encoding device performing an auto-encoding operation on the detected signals is embedded in the receiving element such that the receiving element outputs the detected signals in an encoded form.