Radar Detector Electromagnetic Compatibility Testing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Radar detectors face interference from onboard pulse signal transmitters, leading to electromagnetic compatibility issues, as existing attenuation methods reduce overall signal reception and are not effective in distinguishing and eliminating external echo components.
Innovation Solution
A method for testing electromagnetic compatibility by identifying and eliminating external echo components in radar detector signals, using a training phase to characterize pulses, distribute them into classes, and select classes based on shared characteristics, and then implementing an elimination phase to remove these components from received signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If effective attenuation is used in the entire reception frequency band to eliminate interference from onboard radars, then electromagnetic compatibility is improved, but all reception is cut off during bother phases which decreases the interception of radar signals of interest
Solution Approach 1:
The patent applies local quality by differentiating the treatment of different signal components. Instead of uniform attenuation across all frequencies and time periods, the system selectively eliminates only the external echo components (reflected components from environmental objects) while preserving direct components and other useful signals. This is achieved through characteristic-based filtering that targets specific signal patterns associated with external echoes, thereby maintaining electromagnetic compatibility without sacrificing overall signal reception capability.
Solution Approach 2:
The patent extracts and removes only the harmful external echo components from the received signal mixture. By identifying and isolating these specific reflected components based on their characteristics (such as time delay, amplitude, and frequency patterns), the system can eliminate them selectively without affecting other useful radar signals. This extraction approach allows the radar detector to maintain sensitivity to genuine targets while rejecting interference from environmental reflections.
2Reliability
If simple attenuation is applied to eliminate onboard radar interference, then electromagnetic compatibility is improved, but the ability to distinguish and eliminate external echo components is insufficient
Solution Approach 1:
The patent segments the signal processing into distinct phases: a training phase where external echo characteristics are acquired and stored, and an elimination phase where these characteristics are used to identify and remove corresponding signal components. This segmentation allows the system to build a database of echo patterns during training, then apply this knowledge during operation to precisely discriminate between external echoes and genuine radar returns, significantly improving measurement precision while maintaining electromagnetic compatibility.
Solution Approach 2:
The patent performs preliminary action by conducting a training phase before actual radar operation. During this training phase, the system acquires and stores characteristics of external echo components under various conditions. This preliminary data collection enables the elimination phase to accurately identify and remove external echoes during real-time operation, improving the system's ability to distinguish between harmful interference and useful signals without requiring complex real-time analysis during actual detection tasks.
Data Source
AI summary
The invention relates to a method for testing the electromagnetic compatibility of a radar detector with at least one onboard pulse signal transmitter, wherein said radar detector and each onboard transmitter are part of the same platform, by means of eliminating the external echo component in the signals received by the radar detector, said method comprising a training phase allowing the detected pulses to be divided into classes, grouping together the pulses for which at least two characteristics have a common range of values, and a phase of eliminating the pulses that belong to the selected classes.