Synthetic Imaging Using Multi-Frequency Simultaneous Transmission
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Solution Overview
Problem
Current synthetic imaging methods, such as SAR, require long measurement times due to serial activation of transmitters, which limits the spatial resolution and efficiency in imaging applications.
Innovation Solution
The method involves emitting electromagnetic signals of different frequencies simultaneously from multiple sources and receiving them with multiple receivers, allowing for unique association and rapid synthesis of a large aperture for high-resolution imaging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If transmitters are activated serially in conventional synthetic imaging methods, then unique signal association is achieved, but measurement time increases significantly
Solution Approach 1:
The patent applies parameter changes by assigning different frequencies to each transmitter, transforming the time-based signal differentiation method into a frequency-based method. This allows simultaneous transmission while maintaining unique signal association through frequency encoding rather than temporal sequencing.
Solution Approach 2:
The invention enables continuous useful action by allowing all transmitters to operate simultaneously rather than serially. Multiple transmitters emit signals at the same time with different frequencies, maximizing system productivity and reducing measurement time while maintaining signal distinguishability.
2Productivity
If multiple transmitters operate simultaneously with different frequencies, then measurement time is reduced, but signal differentiation becomes more complex
Solution Approach 1:
The patent uses frequency as a distinguishing parameter for each transmitter signal. Receivers detect signals and identify their source by analyzing frequency characteristics, which simplifies the overall system approach compared to other simultaneous transmission methods by providing a natural physical distinction between signals.
Solution Approach 2:
The system performs preliminary action by pre-assigning specific frequencies to specific transmitters before operation begins. This frequency allocation plan is established in advance, allowing receivers to efficiently differentiate signals through frequency matching without requiring complex real-time analysis.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach significantly reduces measurement time, enabling the generation of high-resolution images by utilizing frequency encoding and simultaneous signal reception, suitable for applications like security screening and material examination.
Implementation Method 1
emitting a first electromagnetic signal having a first frequency from a first radiation source, emitting at least one second electromagnetic signal having a second frequency from a second radiation source
Implementation Method 2
arranging an object on the path of at least one electromagnetic signal between the radiation sources and the receivers, wherein the signals are reflected by the object before they meet the receivers
Data Source
AI summary
A method of synthetic imaging comprising the steps of: emitting a first electromagnetic signal having a first frequency from a first radiation source, emitting at least one second electromagnetic signal having a second frequency from a second radiation source, wherein the first and second frequencies are different from each other, substantially simultaneously receiving the first signal and the second signal with a first receiver, substantially simultaneously receiving the first signal and the second signal with at least one second receiver, arranging an object on the path of at least one electromagnetic signal between the radiation sources and the receivers, wherein the signals are reflected by the object before they meet the receivers, and computing an image of the object from the signals received by the receivers and a device for practicing the method.