Timing Validation for Radar and Optical Sensor Fusion
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Solution Overview
Problem
Current time synchronization protocols between radar and complementary sensing systems lack a mechanism for verifying their accuracy, which is essential for correlating data in time effectively.
Innovation Solution
A method and system that generate a test signal and calculate the synchronization time delay by determining the time difference between signal generation and detection, allowing for validation of the time synchronization protocol by comparing it against a threshold delay, thereby validating or invalidating the protocol based on the calculated delay.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If time synchronization protocols are used to coordinate timing between radar and complementary sensing systems, then data correlation in time is enabled, but there is no mechanism for verifying the accuracy of these protocols
Solution Approach 1:
The patent introduces a test signal as an intermediary element that mediates between the radar system and complementary sensing system to verify synchronization accuracy. The test signal is generated by the radar system, detected by the complementary sensing system, and the detection time is compared with the generation time to calculate synchronization delay, providing a straightforward verification mechanism without adding complex verification infrastructure.
2Measurement precision
If multiple sensing systems are integrated to improve measurement accuracy, then the accuracy of movement characteristics is improved, but the complexity of coordinating timing between systems increases
Solution Approach 1:
The patent implements a feedback mechanism where the radar system generates a test signal at a known time, the complementary sensing system detects it, and the system calculates the synchronization delay by comparing generation time with detection time. This feedback loop provides continuous verification and adjustment capability for timing coordination across multiple sensing systems, enabling accurate data fusion without excessive coordination complexity.
Data Source
AI summary
A synchronization time delay due to a time synchronization protocol between a first sensing system (e.g., a radar system) and a second sensing system (e.g., an optical sensing system) is evaluated. A timing validation system generates a signal and calculates the total time delay between generation of the test signal and receipt of a detection notification communication transmitted from the second sensing system to the timing validation system, via the first sensing system. for the second sensing system to communicate its detection to the timing validation system, via the first sensing system. The synchronization time delay is extracted from the total time delay by removing contributions to the total time delay from additional sources. The calculated synchronization time delay is compared to a threshold delay and, based upon the comparison, generates a result validating or invalidating the time synchronization protocol.