Inclined-Orbit Satellite Sensor Layout for High-Latitude HGV Tracking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing monitoring systems face challenges in constantly monitoring the entire globe with high spatial resolution and performance using a small number of satellites, particularly when tracking hypersonic guided vehicles (HGVs) due to limitations in fisheye camera technology.
Innovation Solution
A monitoring system utilizing a satellite constellation with multiple monitoring satellites in inclined orbits, each equipped with specific sensors (e.g., +X+Y, +X−Y, −X+Y, −X−Y) to cover high-latitude regions, combined with a ground facility, allowing for comprehensive monitoring with high accuracy and resource efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If fisheye cameras are used to circularly monitor the entire circumference, then the monitoring coverage is improved, but the spatial resolution and monitoring performance deteriorate
Solution Approach 1:
The second monitoring device is divided into multiple sensors (first sensor, second sensor, third sensor, fourth sensor) positioned at different orientations around the geocentric direction. Each sensor monitors a specific directional range, and their combined coverage achieves complete circumferential monitoring while maintaining high spatial resolution, avoiding the resolution loss of fisheye cameras.
Solution Approach 2:
The patent transitions from a single wide-angle fisheye camera approach to a multi-sensor three-dimensional spatial arrangement. Sensors are positioned at different angles (+45°, -45°, +135°, -135°) around the geocentric direction, creating a three-dimensional monitoring network that achieves complete coverage without compromising resolution.
2Reliability
If a large number of satellites are deployed to maintain continuous global coverage, then the monitoring performance is improved, but the system complexity and cost increase
Solution Approach 1:
The patent employs inclined orbits with specific inclination angles (30°-60°) that dynamically optimize satellite coverage patterns. The inclined orbit configuration allows a smaller number of satellites to achieve continuous global monitoring by leveraging the dynamic geometry of orbital motion and Earth rotation, reducing the need for large satellite constellations.
Solution Approach 2:
The patent optimizes specific orbital parameters (inclination angle of 30°-60°, sensor orientation angles of ±45° and ±135°) to maximize monitoring efficiency. By carefully selecting these parameters, the system achieves continuous global coverage with fewer satellites, as the optimized geometry ensures that each satellite contributes maximally to the overall coverage.
3Measurement precision
If monitoring is performed against the background of space, then the background noise is reduced, but the monitoring of high latitude regions becomes more challenging
Solution Approach 1:
The patent uses asymmetric sensor orientations (±45°, ±135°) relative to the geocentric direction, which are specifically designed to tilt toward high latitude regions. This asymmetric arrangement allows sensors to monitor high latitude airspace while maintaining the space background advantage, as the tilted orientations naturally point toward the poles where high latitude monitoring is needed.
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 enables constant global monitoring with high spatial resolution and performance using a small number of satellites, effectively tracking HGVs by minimizing noise interference and optimizing satellite resource usage.
Implementation Method 1
it is effective to monitor the periphery of the Earth against the background of space
Data Source
AI summary
A second monitoring device includes a +X+Y sensor (11S) directed at +45 degrees, a +X−Y sensor (12S) directed at −45 degrees, a −X+Y sensor (13S) directed at +135 degrees, and a −X−Y sensor (14S) directed at −135 degrees. When flying northeastward, the second monitoring device monitors airspace above high latitudes in the Northern Hemisphere with the +X−Y sensor (12S), and monitors airspace above high latitudes in the Southern Hemisphere with the −X+Y sensor (13S). When flying southeastward, the second monitoring device monitors airspace above high latitudes in the Northern Hemisphere with the −X−Y sensor (14S), and monitors airspace above high latitudes in the Southern Hemisphere with +X+Y sensor.