Aerial Radar Reflector Drone Calibration
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Solution Overview
Problem
Current radar reflector systems for calibrating synthetic aperture radars on artificial satellites face challenges in finding stable locations, incur high costs for installation and maintenance, and are prone to signal disturbances due to management structures, making it difficult to operate and manage them effectively.
Innovation Solution
A radar reflector system that includes a reflector with flight modules and a control unit, allowing the reflector to float in the air and be operated for short durations, eliminating the need for ground-based installation and reducing maintenance costs, while enabling shape and size changes for various calibration types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the reference target is fixed onto the ground surface with basic civil construction, then durability against rain and wind is improved, but the position and shape of the reference target cannot be changed and large amounts of costs are required
Solution Approach 1:
The reference target is transformed from a fixed ground-based structure to a dynamically deployable aerial structure. The reference target is configured to be deployable from a drone, allowing it to be positioned in the air rather than fixed on the ground. This enables the position and shape to be changed by deploying or retracting the reference target structure, while still providing sufficient durability during the calibration operation.
2Stability of the object's composition
If the reference target is fixed onto the ground surface, then stability of installation location is improved, but it is difficult to find expansive and stable location and large amounts of costs are required to monopolize, maintain, and manage the installation location
Solution Approach 1:
The reference target is extracted from the ground-based installation and relocated to an aerial position. By deploying the reference target in the air from a drone, the system eliminates the need for expensive ground-based installation locations and their associated management costs for protective structures, while maintaining stability through controlled aerial positioning during calibration operations.
3Object-affected harmful factors
If the reference target is installed on the ground surface, then signal disturbance protection is improved, but management structures (protective fences and berms) cause signal disturbance and make periodic management difficult
Solution Approach 1:
The reference target is moved from the ground plane to the aerial dimension. By positioning the reference target in the air rather than on the ground, the system eliminates the need for protective fences and berms that cause signal disturbance. The aerial position naturally protects the reference target from ground-based interference while simplifying the overall system structure.
4Adaptability or versatility
If various shapes and sizes of reflectors are manufactured separately and fixed onto the ground surface, then calibration versatility is improved, but manufacturing costs and installation complexity increase
Solution Approach 1:
Instead of manufacturing multiple fixed reflectors of different shapes and sizes, the system uses a single configurable reference target that can be adjusted to different shapes and sizes through deployment configurations. The reference target structure includes adjustable elements that can be configured in various arrangements to provide different calibration geometries, eliminating the need for multiple separate reflectors.
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
Enables cost-effective and efficient calibration without the need for extensive ground-based infrastructure, reduces weight and durability requirements, and allows for flexible calibration operations by changing the reflector's shape and position in the air.
Implementation Method 1
a reflector, one or more flight modules, and a control unit, each of the reflector reflects electromagnetic waves
Data Source
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AI summary
A technical problem is to provide a radar reflector system for calibrating a synthetic aperture radar for an artificial satellite, which is capable of being operated even for a short time and maintained and managed at a low cost. To this end, the radar reflector system for calibrating the synthetic aperture radar according to the present disclosure includes: a reflector which reflects electromagnetic waves; one or more flight modules which are provided on the reflector; and a control unit which controls the flight module.