Multi-Satellite Target Tracking Device Position Estimation
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Solution Overview
Problem
Existing target tracking systems using a single artificial satellite cannot accurately observe the position of a target, including altitude, due to limitations in observation precision.
Innovation Solution
A target tracking device that communicates with multiple observation satellites, selects the best satellites based on the target's position, sets a synchronized observation schedule, and estimates the target's position using high-precision observation information from multiple satellites.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single artificial satellite is used to track a target, then the device complexity is reduced, but the measurement precision of the target position cannot be improved
Solution Approach 1:
The patent combines observation data from multiple artificial satellites to track a target, merging their respective observation information to achieve high-precision position determination. This resolves the contradiction by using multiple satellites (increasing system capability) while integrating their data through a unified processing system (managing complexity).
Solution Approach 2:
The patent transitions from single-satellite two-dimensional observation to multi-satellite three-dimensional observation, adding spatial dimensions to the observation system. This enables accurate determination of target position including altitude by utilizing observations from different spatial perspectives simultaneously.
2Measurement precision
If multiple observation satellites are used to observe the target, then the measurement precision is improved, but the loss of time increases due to scheduling coordination
Solution Approach 1:
The patent performs preliminary selection of satellites and preliminary setting of observation schedules before actual observation occurs. The management device pre-determines which satellites should observe the target and coordinates their observation timing in advance, reducing time loss during actual operation.
Solution Approach 2:
The patent implements a feedback mechanism where the management device receives observation results from satellites and uses this information to optimize future observation scheduling. This feedback loop enables continuous improvement of observation efficiency and reduces scheduling coordination time over time.
3Measurement precision
If synchronized observation schedule is set for multiple satellites, then the measurement precision is improved, but the device complexity increases due to schedule management
Solution Approach 1:
The patent introduces a management device that performs multiple functions: satellite selection, observation schedule setting, and observation result reception. This universal device handles all aspects of multi-satellite coordination through integrated processing, reducing overall system complexity despite the sophisticated scheduling requirements.
Data Source
AI summary
A target tracking device to estimate a position of a target with high accuracy will be provided. The target tracking device is provided with a communication device and a processor. The communication device performs communication with a plurality of observation satellites that observe the target. The processor executes a selection of satellites, a setting of a schedule and an estimation. The selection of satellites includes selecting two or more selected satellites that observes the target among the plurality of observation satellites. The setting of the schedule includes determining an observation schedule for each of the two or more selected satellite to observe the target and transmitting an observation request signal that represents the determined observation schedule to a corresponding selected satellite. The estimation includes estimating the position of the target based on two or more pieces of high-precision observation information respectively observed by the two or more selected satellites.