Electromagnetic Signal Generation via Spectrogram Image Translation
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Solution Overview
Problem
Existing signal generators find it difficult to accurately produce electromagnetic signals with varying frequency distributions over time, as describing frequency features in the time domain is complex for users.
Innovation Solution
A method and system that utilize a spectrogram representation, specifically a heat map or waterfall diagram, to generate electromagnetic signals by translating image pixel values into frequency and time domain characteristics, allowing for easy manipulation and generation of signals with time-dependent spectra.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If signals are constructed in time domain using conventional signal generators, then the signal generator can generate electromagnetic signals, but it becomes difficult to correctly generate signals having a desired frequency distribution and time dependence
Solution Approach 1:
The patent transforms the signal generation interface from time-domain waveform editing to frequency-time domain spectrogram editing. Users can directly manipulate the frequency distribution and time dependence by drawing on a spectrogram image, eliminating the complex mental transformation required when working in the time domain. This dimensional change in the control interface directly resolves the contradiction by improving frequency distribution accuracy while maintaining ease of operation.
2Adaptability or versatility
If the frequency distribution features vary over time, then the signal can represent complex spectral evolution, but the complexity of describing and generating such signals increases significantly
Solution Approach 1:
The patent uses an image (spectrogram) as a visual copy or representation of the desired frequency-time distribution. Instead of requiring users to mathematically describe complex time-varying spectral features, they can directly draw or load an image that represents the desired spectrogram. The system then processes this image to generate the corresponding time-dependent signal, greatly simplifying the signal description process while maintaining full adaptability for complex spectral evolution.
3Manufacturing precision
If users manually configure signal generators to achieve desired spectral characteristics, then signals can be generated, but the process becomes complicated for users to mentally transfer features from frequency domain to time domain
Solution Approach 1:
The patent introduces an image processing intermediary between the user and the signal generator. Instead of directly configuring time-domain parameters, users work with visual images representing spectrograms. This intermediary layer automatically handles the complex transformation from frequency-time domain representation to time-domain signal generation, ensuring spectral feature accuracy while keeping the user interface simple and intuitive.
Data Source
AI summary
A method for generating an electromagnetic signal is disclosed. The method comprises the following steps: An image having pixels is at least one of received and generated, wherein each one of the pixels has one of at least two different pixel values. At least one of a spectrogram of an electromagnetic signal and characteristic parameters of the electromagnetic signal is determined based on at least one of the image and the pixel values. The electromagnetic signal is generated based on at least one of the spectrogram and the characteristic parameters.