Antenna Mispointing Correction with Interference Mitigation
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Solution Overview
Problem
In satellite communications, pointing errors in mobile antenna systems can lead to inefficient resource usage and excessive interference with non-target satellites, making it challenging to maintain accurate communication links while complying with regulatory interference requirements.
Innovation Solution
A method and system for performing mispointing correction operations in mobile antenna systems that consider interference thresholds with non-target satellites, allowing for accurate pointing while minimizing interference, by determining if the current geographic location is within an acceptable region for performing a mispointing correction operation and adjusting the antenna beam accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If mispointing correction operations are performed to maintain accurate antenna pointing, then pointing accuracy is improved, but interference with non-target satellites increases
Solution Approach 1:
The system dynamically adjusts the antenna beam pointing based on real-time geographic location data, determining whether to perform mispointing correction operations by evaluating current location against pre-defined acceptable regions. This dynamic decision-making process allows the system to maintain pointing accuracy when safe and avoid interference when at risk.
Solution Approach 2:
The system uses feedback from geographic location information to control the mispointing correction operations. By continuously monitoring the mobile vehicle's location and comparing it against acceptable regions, the system provides feedback control that prevents interference while maintaining pointing accuracy when conditions permit.
2Object-generated harmful factors
If mispointing correction operations are avoided to reduce interference with non-target satellites, then interference levels are reduced, but pointing accuracy deteriorates
Solution Approach 1:
The system dynamically determines whether to perform mispointing correction based on the mobile vehicle's current geographic location. By evaluating location against pre-defined acceptable regions, the system adapts its correction operations in real-time, performing corrections only when geographic conditions ensure interference remains below thresholds.
Solution Approach 2:
The system changes the operational parameter of mispointing correction based on geographic location. When the mobile vehicle is within an acceptable region, full correction operations are performed; when outside the acceptable region, correction operations are avoided or modified, thus changing the system's behavior based on spatial parameters.
3Reliability
If pointing error is compensated by reducing modulation and coding rate, then link quality is maintained, but system resource efficiency decreases
Solution Approach 1:
The system performs preliminary mispointing correction operations proactively to maintain accurate antenna pointing before significant pointing errors develop. By preventing pointing errors through periodic correction rather than compensating for them, the system avoids the need to reduce modulation and coding rates, thus maintaining both link quality and resource efficiency.
Solution Approach 2:
The system replaces the soft compensation approach (reducing modulation and coding rates) with a mechanical correction approach (performing mispointing correction operations). This substitution maintains higher resource efficiency by correcting the physical pointing error rather than degrading the communication signal to compensate for the error.
Data Source
AI summary
Systems and methods are described herein for performing mispointing correction operations that can provide accurate pointing of an antenna towards a satellite, while also satisfying interference requirements with other satellites. As a result, the mispointing correction operations described herein can improve resource efficiency of communication systems using such antennas and help ensure compliance with interference requirements of other satellites.