Signal Analyzer Suppressed Phasor Display
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Solution Overview
Problem
Existing signal analysis methods fail to provide a comprehensive, real-time display of perturbations and their associated frequency, amplitude, and phase characteristics, particularly in complex signals, as they often require viewing signals in single domains which may obscure important characteristics.
Innovation Solution
A signal analyzer simultaneously displays a suppressed phasor domain representation along with one or more additional domains like the frequency, time, numerical, or modulation domain, by converting analog signals to digital, performing Fourier transforms, removing selected components, and generating residual signals for phasor domain display through in-phase and quadrature signal multiplication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a signal is displayed in a single domain (time domain or frequency domain), then the display is simple and easy to interpret, but important signal characteristics may be obscured or lost
Solution Approach 1:
The patent merges multiple signal domain representations (time domain, frequency domain, and suppressed phasor domain) into a single display interface. This allows users to simultaneously view different aspects of signal characteristics without switching between separate displays, thereby preventing information loss while maintaining ease of operation through integrated visualization.
Solution Approach 2:
The invention introduces a new dimensional representation called the suppressed phasor domain, which adds angular and radial dimensions to the traditional time and frequency domain plots. This additional dimension enables visualization of phase and amplitude relationships that are not visible in conventional single-domain displays, preventing characteristic loss while enhancing analytical capability.
2Loss of information
If multiple signal domains are displayed simultaneously, then comprehensive signal characteristics are captured, but the display complexity and processing requirements increase
Solution Approach 1:
The system performs preliminary signal processing by automatically detecting and suppressing dominant frequency components before generating the suppressed phasor domain representation. This preliminary action simplifies the subsequent visualization by removing interfering components, reducing the computational complexity required to display multiple domains simultaneously while maintaining comprehensive signal characterization.
Solution Approach 2:
The invention dynamically adjusts display parameters based on signal characteristics. The suppressed phasor domain representation adapts its scaling and resolution based on the detected signal properties, allowing comprehensive visualization without requiring uniform high-complexity processing across all display elements. This parameter adaptation reduces overall system complexity while maintaining information completeness.
Data Source
AI summary
Disclosed is a signal analyzer that can receive a signal generated by an external system. The signal has a plurality of frequency components. The signal analyzer generates a suppressed phasor domain representation of the signal by selectively removing at least one component for use as a reference. The signal analyzer then displays the suppressed phasor domain representation of the signal. In one embodiment, the signal analyzer removes the component of greatest magnitude. The signal analyzer can also (or alternatively) remove a user selected component. In addition to the suppressed phasor domain, the signal analyzer can simultaneously display the frequency domain, the time domain, the numerical domain, and/or the modulation domain.