Microwave Imaging Antenna Rotation Control
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Solution Overview
Problem
Microwave imaging systems face computational intensity and high costs in reconstructing images of objects, particularly the human body, due to the complexity of solving the inverse scattering problem and the need for computationally intensive algorithms.
Innovation Solution
A microwave imaging system with a controller and computation processor that uses object surface position data and prior microwave image reconstructions as seeds for image reconstruction, along with a feedback mechanism to adjust rotations and translate antennas, to enhance the initial estimate and reduce computational demands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional microwave imaging systems solve the inverse scattering problem using traditional algorithms, then image reconstruction is achieved, but computational load and processing time are excessively high
Solution Approach 1:
The system performs preliminary actions by acquiring object surface position data before image reconstruction and using this data to generate an initial seed model. This preliminary preparation reduces the computational complexity of the subsequent inverse scattering problem solution by providing a better starting point for iterative algorithms, thereby reducing processing time while maintaining reconstruction accuracy
Solution Approach 2:
The invention changes key parameters by incorporating surface position data into the reconstruction process. By using surface position information to constrain the search space and initialize the reconstruction algorithm, the system transforms the traditional full-volume reconstruction problem into a more efficient constrained optimization problem, significantly reducing computational load and processing time
2Measurement precision
If traditional microwave imaging systems perform full-volume image reconstruction, then complete object imaging is achieved, but computational complexity and processing costs increase
Solution Approach 1:
The system applies local quality by focusing computational resources on regions where information is most valuable. By using surface position data to guide the reconstruction process and prioritize imaging of surface-near structures, the system achieves high measurement precision for clinically relevant areas while reducing overall computational complexity through selective processing
Solution Approach 2:
The preliminary acquisition of surface position data allows the system to pre-process and constrain the reconstruction problem before full imaging begins. This preliminary step creates a more efficient computational framework that maintains reconstruction accuracy while reducing the complexity of solving the inverse scattering problem
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 reduces the computational load and processing time for reconstructing microwave images by using enhanced seed data and surface position information, leading to more efficient and cost-effective image reconstruction.
Implementation Method 1
When radio frequency (RF) energy moves through air and impinges on an object, scattering from the object occurs as the RF energy hits the surface and moves through the object
Implementation Method 2
a MW transmitter configured to transmit a MW towards the object; a MW receiver configured to detect a MW scattered field received from the object
Data Source
AI summary
A microwave (MW) system includes an object support adapted to support an object, a MW transmitter, a MW receiver, an outer rotation unit, an inner rotation unit, a controller and a computation processor. The outer rotation unit includes an outer ring, having a ring shape, with an outer ring mount, upon which one of either an antenna of the MW transmitter or an antenna of the MW receiver is mounted. The inner rotation unit comprises an inner ring, having a ring shape, with an inner ring mount, upon which the other of an antenna of the MW transmitter or an antenna of the MW receiver is mounted. The controller is configured to independently control both the rotation of the inner ring and the outer ring. The computation processor is configured to receive data including MW data representative of MW scattered field detected by the MW receiver.