Terahertz Imaging Radiometer Array Design
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Solution Overview
Problem
Current terahertz wave passive imaging systems face challenges in achieving higher resolution and contrast due to the limitations of a single row of radiometer arrays, which restricts the ability to effectively sample terahertz waves from different heights and angles.
Innovation Solution
The implementation of a terahertz signal-based image collection device with multiple rows of radiometers (n ≥ 2) mounted on a focal plane, where each row samples terahertz waves at the same height but at staggered intervals, allowing for uniform sampling and improved imaging capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single row of radiometer array is used on the focal plane, then the device complexity is reduced, but the imaging resolution and contrast deteriorate
Solution Approach 1:
The patent transitions from a one-dimensional single row radiometer array to a two-dimensional multi-row radiometer array configuration. By arranging radiometers in multiple rows with different receiving surface positions, the system captures terahertz wave signals from multiple spatial dimensions simultaneously, thereby improving imaging resolution and contrast without proportionally increasing device complexity.
Solution Approach 2:
The radiometer array is segmented into multiple rows, where each row has radiometers with receiving surfaces at different positions. This segmentation allows different rows to sample terahertz waves from different spatial locations, enabling comprehensive coverage of the inspection target and improving overall imaging quality through multi-perspective data fusion.
2Measurement precision
If multiple rows of radiometers are added to improve sampling rate, then the imaging resolution and contrast are improved, but the device complexity increases
Solution Approach 1:
Each radiometer in the multi-row array is designed with universal functionality to receive and process terahertz wave signals from different spatial positions. The receiving surfaces are positioned at different locations but all radiometers perform the same core function of detecting terahertz radiation, allowing the system to achieve multi-perspective sampling without requiring fundamentally different device components, thus controlling complexity while improving resolution.
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 configuration enhances the resolution and contrast of terahertz wave images by increasing the sampling rate and allowing for more comprehensive capture of terahertz wave signals, thereby meeting the requirements of both high resolution and high contrast.
Implementation Method 1
a swinging reflection plate configured to reflect terahertz wave signals emitted from a sampling region including a target to be inspected
Implementation Method 2
a lens component configured to focus the terahertz wave signals reflected by the swinging reflection plate
Implementation Method 3
terahertz wave passive imaging technology uses a focusing antenna combined with a high-sensitivity radiometer to receive power of terahertz waves radiated from the scenarios
Data Source
Figure 1
Figure 2~3
Figure 4~5A
AI summary
A terahertz signal-based image collection device, an image generation system and an image generation method are provided. The image collection device includes: a swinging reflection plate configured to reflect terahertz wave signals emitted from a sampling region including a target to be inspected; a lens component configured to focus the terahertz wave signals reflected by the swinging reflection plate; and a radiometer array including n rows of radiometers mounted on a focal plane of the lens component, where the n rows of radiometers are configured to sample the terahertz wave signals emitted from the same height of the target to be inspected and reflected by the swinging reflection plate at intervals, where n ≥ 2, so that the formed terahertz wave image has higher resolution and higher contrast.