Radar Phase Determination via Spiral IQ Approximation
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Solution Overview
Problem
Conventional phase determination techniques fail to accurately compensate spiral-shaped distortions in in-phase and quadrature (IQ) data in radar measurements, leading to erroneous results.
Innovation Solution
A method and apparatus that obtain an IQ representation of radar data, determine an approximation of the IQ representation with a spiral configuration, and calculate the phase of the received radar signal based on this approximation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional phase determination techniques are used, then the process is simple, but the measurement precision deteriorates due to inability to compensate spiral-shaped distortions
Solution Approach 1:
The patent applies preliminary action by fitting a spiral model to the IQ data before phase determination. The spiral configuration is determined in advance to compensate for distortions, allowing accurate phase extraction from the pre-compensated data rather than attempting correction during phase calculation
Solution Approach 2:
The patent transforms the distorted IQ data into a corrected representation by changing the parameterization approach. Instead of working directly with the distorted I and Q components, the method parameterizes the data using spiral coordinates (radius and angle) that inherently account for the distortion, enabling accurate phase determination
2Measurement precision
If spiral distortion compensation is implemented, then measurement precision improves, but device complexity increases
Solution Approach 1:
The patent replaces complex iterative distortion correction algorithms with a direct spiral model fitting approach. By substituting the traditional correction mechanism with a mathematical spiral parameterization, the system achieves accurate compensation through closed-form solutions rather than repeated mechanical correction steps
Solution Approach 2:
The patent applies the curvature principle by modeling the distorted IQ data as lying on a spiral curve rather than a straight line or simple circle. This geometric insight allows the use of spiral coordinate transformations that naturally accommodate the curved distortion pattern, simplifying the compensation process
Data Source
AI summary
In accordance with an example embodiment, a method includes: obtaining an in-phase and quadrature (IQ) representation of radar data indicating a received radar signal, determining an approximation of the IQ representation, the approximation having a spiral configuration, and determining a phase of the received radar signal based on the approximation.