Emitter Detection Using Multi-Sample Threshold Evaluation
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Solution Overview
Problem
Emitter detection systems that rely on a single data point from a filter often require a high signal-to-noise ratio (SNR) threshold to reduce false alarms, limiting their detection range.
Innovation Solution
The system evaluates multiple output data points from a filter, using a processor to determine if a certain number of samples satisfy a threshold, enabling the detection of signal emitters with a lower SNR threshold by making individual detection decisions for each sample, thereby increasing the detection range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a high SNR detection threshold is used to reduce false alarms, then the false alarm rate is reduced, but the detection range is limited
Solution Approach 1:
The patent divides the detection process into multiple independent sample evaluations. Instead of using a single data point, the system evaluates multiple samples from the filter output and makes individual detection decisions for each sample. This segmentation allows the system to accumulate evidence across multiple samples, enabling detection at lower SNR thresholds while maintaining acceptable false alarm rates through statistical evaluation of multiple decisions.
2Device complexity
If a single data point is used for detection, then the device complexity is reduced, but the detection range is limited
Solution Approach 1:
The patent combines multiple detection decisions from individual samples to form an overall detection decision. By merging the results from multiple sample evaluations, the system achieves extended detection range without requiring excessive complexity in any single detection component. The processor integrates multiple binary decisions (detect/not detect for each sample) into a unified detection outcome, effectively combining information from multiple data points.
Data Source
AI summary
A signal receiver includes receive circuitry. The signal receiver further includes a processor coupled to the receive circuitry and configured to receive, from a filter, a stream of samples including a first set of samples. A data rate of an input of the filter may correspond to a data rate of an output of the filter. The first set of samples includes multiple samples. The processor is further configured to perform a detection operation on the first set of samples. The processor is further configured to detect a signal emitter based on the detection operation.