Wide-field Imaging and Hyperspectral Collaborative Early Warning System
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Solution Overview
Problem
Existing remote sensing detection systems face challenges in synchronizing wide-field imaging general surveys with hyperspectral accurate identification, leading to high false alarm rates and insufficient dynamic range in hyperspectral interferometers.
Innovation Solution
A wide-field imaging and hyperspectral collaborative early warning system that utilizes a digital micromirror array to modulate incident light between wide-field imaging and hyperspectral interferometry, allowing for synchronous general surveys and fine spectrum identification across varying spatial resolutions and dynamic ranges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If traditional wide-field imaging technology is used for general survey, then the survey coverage is broad, but the false alarm rate is high
Solution Approach 1:
The system segments the survey function into two independent pathways: wide-field imaging for broad survey coverage and hyperspectral interferometry for accurate identification. The digital micromirror array divides the incident light into different paths, allowing simultaneous execution of both functions without interference, thereby reducing false alarms while maintaining comprehensive coverage.
Solution Approach 2:
The digital micromirror array acts as an intermediary device that coordinates between the wide-field imager and hyperspectral interferometer. It dynamically directs light to appropriate detectors based on detection needs, enabling the system to maintain high reliability by cross-validating detections across both imaging modalities.
2Measurement precision
If wide-field imaging and hyperspectral interferometry are combined for collaborative early warning, then the identification accuracy is improved, but the synchronization between the two systems is not achieved
Solution Approach 1:
The system merges the wide-field imaging and hyperspectral interferometry pathways into a single integrated optical architecture. Both systems share common components including the digital micromirror array, collimation systems, and detector arrays, enabling simultaneous operation with synchronized timing and coordinated data processing to eliminate synchronization delays.
Solution Approach 2:
The digital micromirror array serves multiple functions: it acts as a beam splitter, a spatial modulator, and a synchronizer. By controlling the mirror states dynamically, it coordinates the operation of both imaging systems in real-time, ensuring synchronized data acquisition across different spatial resolutions and detection modes.
3Measurement precision
If hyperspectral interferometer is used for accurate identification, then the spectral resolution is high, but the dynamic range is insufficient
Solution Approach 1:
The system adds a spatial dimension to the hyperspectral detection by using the digital micromirror array to create multiple virtual detectors at different positions. This allows the hyperspectral interferometer to simultaneously capture spectral information across a wider dynamic range by mapping different spatial regions to different detection channels, effectively extending the dynamic range without sacrificing spectral 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
The system achieves low false alarm rates, adjustable target spatial resolution, and improved dynamic range for both wide-field imaging and hyperspectral interferometry, enabling effective early warning and characterization of targets in remote sensing applications.
Implementation Method 1
a digital micromirror array 20... the digital micromirror array 20 has three flip states for incident light: 0 state, +1 state and −1 state... +1 state: incident light is reflected to the measured target through the digital micromirror array 20 in an original path
Implementation Method 2
a first collimation system 30.1, a second collimation system 30.2... the first collimation system 30.1, the first reflector 40.1, the wide-field imaging optical filter 50.1 and the wide-field imager 60 are arranged on one side of a symmetry axis
Implementation Method 3
a wide-field imaging optical filter 50.1, a narrow-band optical filter 50.2... the wide-field imaging optical filter 50.1 and the wide-field imager 60 are arranged on one side of the symmetry axis
Implementation Method 4
a hyperspectral interferometer 70... the beam splitter 70.1 projects incident light to the optical path difference modulation element 70.2 for modulation to generate interference fringes
Data Source
AI summary
A wide-field imaging and hyperspectral collaborative early warning system and method are provided. The system includes: a primary imaging system, a digital micromirror array, a first collimation system, a second collimation system, a first reflector, a second reflector, a wide-field imaging optical filter, a narrow-band optical filter, a wide-field imager and a hyperspectral interferometer. The system and method have the advantages that the wide-field imaging general survey and fine spectrum detection can be realized synchronously, the functions are multiple, and the false alarm rate is low; the target spatial resolution of the fine spectrum identification is adjustable, the micro-control unit flipping solution is simple to operate, and quick adjustment is realized; the adaptability is strong, the flipping time of the corresponding micro-control unit is adaptively adjusted for the measured target with too low or too strong radiation intensity, and the dynamic range of the system is effectively improved.