Radiolocation Signal Parameter Extraction
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Solution Overview
Problem
Existing radiolocation techniques face challenges in efficiently estimating the location of a source with reduced data transfer, particularly in wireless communication systems where accurate location-based services are desired.
Innovation Solution
A system comprising multiple signal receiving circuits that generate a denoised version of the signal by demodulating, re-modulating, and parameterizing deformations, extracting a set of signal parameters, and transmitting these parameters to a central processor for location estimation, thereby reducing data transfer while maintaining accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional radiolocation techniques are used to estimate source location, then location estimation can be performed, but data transfer requirements are high
Solution Approach 1:
The patent extracts only the essential signal parameters (amplitude, phase, frequency, time stamps) from the complete received signal at each receiving circuit. Instead of transferring the entire signal waveform or raw data, only the critical parameters needed for location estimation are extracted and transmitted to the central processor, significantly reducing data transfer volume while preserving location estimation accuracy.
Solution Approach 2:
The patent transforms the continuous signal waveform into discrete signal parameters (amplitude, phase, frequency, time stamps). This parameter transformation converts the problem from processing large volumes of continuous signal data to processing compact discrete parameter sets, achieving reduced data transfer while maintaining the capability for accurate location estimation through parameter-based signal reconstruction and analysis.
2Quantity of substance
If signal parameters are extracted and transmitted instead of complete signals, then data transfer is reduced, but signal reconstruction capability may be compromised
Solution Approach 1:
The patent performs preliminary signal processing and parameter extraction at each receiving circuit before transmission. The signal parameters are extracted, denoised versions are generated, and essential characteristics are preserved in advance. This preliminary action ensures that when the central processor receives the parameter sets, it has sufficient information to accurately reconstruct signal characteristics and perform location estimation without needing the complete original signals.
3Measurement precision
If denoising processing is applied to received signals, then location estimation accuracy is improved, but processing complexity increases
Solution Approach 1:
The patent segments the denoising processing task across multiple receiving circuits. Each receiving circuit independently generates a denoised version of the received signal using local processing, then extracts parameters from its denoised signal. This segmentation distributes the processing complexity across multiple independent units rather than requiring one complex centralized processor, making the system more scalable and manageable while achieving improved location estimation accuracy through combined denoised parameter sets.
Data Source
AI summary
A system for estimating a location of a source transmitting a signal having a known modulation standard comprises a plurality of signal receiving circuits, each configured to receive the signal, to generate a denoised version of the signal, and to extract from the denoised version of the signal a set of signal parameters sufficient to at least partially reconstruct the denoised version of the signal. The system can also comprise a central processor circuit that receives the set of signal parameters from each signal receiving circuit and estimates the location of the source based on the signal parameters.