Checkerboard Constellation Optical Telescope Aperture Expansion
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Solution Overview
Problem
Current optical space telescopes face limitations in achieving apertures larger than 10 meters due to rocket envelope constraints and harsh temperature environments, leading to low spatial spectrum coverage and challenges in measuring complex coherence coefficients, which restricts high-resolution imaging capabilities.
Innovation Solution
The method employs a checkerboard constellation-based high-density data acquisition system with a single-aperture camera and multiple checkerboard imagers with different baselines for high-density sampling of the complex coherence coefficient's modulus, combined with an argument angle recovery and image reconstruction algorithm to achieve high-resolution computational imaging, allowing for the assembly of ultra-large-aperture optical telescopes exceeding the rocket envelope.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the aperture of optical space telescopes is enlarged to exceed 10 meters, then the spatial resolution and imaging capability are improved, but the rocket envelope constraints and temperature environment make it difficult to achieve
Solution Approach 1:
The patent divides a large-aperture telescope into multiple small-aperture telescopes distributed in a checkerboard constellation. Each small aperture is launched separately within rocket envelope constraints, then combined in space to form an equivalent large aperture of tens or hundreds of meters, achieving high spatial resolution without exceeding launch vehicle limitations.
Solution Approach 2:
The patent transitions from a single large aperture in three-dimensional space to a distributed constellation of small apertures arranged in a two-dimensional checkerboard pattern. This dimensional reconfiguration allows the system to achieve equivalent large-aperture performance while fitting within rocket envelope constraints during launch.
2Measurement precision
If the aperture of optical space telescopes is enlarged, then the spatial spectrum coverage is improved, but the complexity of measuring complex coherence coefficients increases
Solution Approach 1:
The patent uses multiple small-aperture telescopes as copies of a basic unit, arranged in a checkerboard pattern. Each aperture captures interference patterns, and the combined data from all copies provides comprehensive spatial spectrum coverage while maintaining manageable measurement complexity through standardized processing procedures.
3Measurement precision
If the aperture of optical space telescopes is enlarged to tens or hundreds of meters, then the imaging resolution is improved, but the temperature environment and stability control become more difficult
Solution Approach 1:
Instead of constructing one large telescope structure that would be difficult to stabilize thermally, the patent segments the system into multiple small, independent telescopes. Each small aperture has simpler thermal management requirements and can be individually stabilized, making the overall system more manageable in harsh temperature environments like geostationary or sun-synchronous orbits.
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 enables the creation of optical space telescopes with equivalent apertures of tens or hundreds of meters, overcoming the limitations of existing systems by achieving high-density sampling and improved image reconstruction, thereby enhancing spatial resolution and frequency coverage beyond previous constraints.
Implementation Method 1
checkerboard constellation-based optical pupil plane interference
Data Source
AI summary
A method of high-resolution computational imaging through checkerboard constellation-based optical pupil plane interference is provided where a checkerboard constellation-based high-density data acquisition system is adopted to realize high-density sampling of the modulus G of the complex coherence coefficient μ(u, v) of the object, and then the argument angle recovery (also known as phase recovery) algorithms and the image reconstruction algorithms are combined to obtain a clear image. For the optical telescope with ultra-large aperture much larger the rocket envelope, low, medium and high-frequency cameras can be placed on different rocket satellite platforms, launched into an orbit in batches and recombined in the orbit to obtain an equivalent large-optical-aperture imaging optics system, and the equivalent aperture of the system breaks through the limitation of the rocket envelope and can be expanded to 10 meters or above.