Satellite Terminal Automatic Re-ranging via Signal Monitoring
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Solution Overview
Problem
Conventional satellite terminal ranging processes are manual, labor-intensive, and unable to reliably identify terminals that require re-ranging due to issues like poor weather conditions, mechanical misalignment, and seasonal changes, leading to suboptimal transmission rates and power settings.
Innovation Solution
A method and system where satellite terminals automatically monitor signal quality, detect significant changes, and initiate re-ranging processes independently, using filters to track signal quality and power error biases, ensuring accurate baseline settings are established under clear sky conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual ranging process is used to identify terminals needing re-ranging, then labor intensity and time consumption increase, but the system cannot reliably and dynamically identify terminals that require ranging
Solution Approach 1:
The satellite terminal autonomously monitors its own signal quality metrics (SINR, power error bias) and automatically determines when ranging is needed, eliminating the need for manual examination by network personnel. The terminal serves itself by detecting performance degradation and initiating re-ranging without external intervention.
Solution Approach 2:
The system continuously monitors signal quality metrics and uses this feedback to dynamically determine when ranging should be performed. The terminal compares current signal quality against thresholds and historical data, creating a closed-loop control system that automatically triggers ranging when performance degradation is detected.
2Reliability
If ranging is performed during poor weather conditions, then initial baseline settings are established, but transmission rates are limited and may not represent optimal clear sky performance
Solution Approach 1:
The system performs ranging under clear sky conditions when possible, establishing accurate baseline settings before weather degradation occurs. By proactively ranging during optimal conditions, the terminal ensures baseline parameters reflect maximum performance capability rather than weather-limited performance.
Solution Approach 2:
The system dynamically adapts ranging timing based on weather conditions and signal quality monitoring. Rather than performing ranging at fixed intervals or only during installation, the terminal continuously monitors SINR and power error bias, triggering ranging when conditions indicate performance degradation, thus adapting to changing environmental conditions.
3Measurement precision
If manual monitoring of transmit statistics is performed to detect performance changes, then identification accuracy may be improved, but the process becomes cumbersome and labor-intensive
Solution Approach 1:
The manual mechanical process of personnel examining transmit statistics is replaced with automated electronic monitoring of signal quality metrics. The terminal automatically measures SINR, power error bias, and other parameters, substituting human analysis with automated digital monitoring that maintains precision while eliminating labor intensity.
Solution Approach 2:
The system introduces automated signal quality monitoring as an intermediary between the terminal and the ranging decision. Rather than directly manual examination of statistics, the terminal continuously monitors its own performance metrics and uses this intermediate data to automatically trigger ranging when thresholds are exceeded, bridging the gap between performance measurement and ranging initiation.
4Productivity
If automatic ranging initiation is implemented, then ranging responsiveness and transmission optimization improve, but system complexity increases
Solution Approach 1:
The satellite terminal's existing signal processing and monitoring capabilities are extended to also perform automatic ranging determination. The same hardware and software that monitor signal quality for normal operation are utilized to detect ranging needs, making the terminal multi-functional without requiring separate dedicated ranging control hardware.
Solution Approach 2:
The system uses changes in existing signal quality parameters (SINR, power error bias) as triggers for ranging. By monitoring variations in these parameters against predefined thresholds, the system achieves automatic ranging initiation without requiring complex new detection mechanisms, simply leveraging changes in already-measured parameters.
Data Source
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AI summary
Systems and methods are provided for automatically re-ranging a satellite terminal. A satellite system may comprise a satellite comprising an inroute channel and an outroute channel, and a terminal configured to receive an outroute signal from the satellite on the outroute channel and transmit an inroute signal to the satellite on the inroute channel. The satellite terminal may automatically determine when to perform ranging by monitoring the quality of the outroute signal; monitoring the quality of the inroute signal; and determining if there has been a sustained degradation in the monitored inroute signal quality or the monitored outroute signal quality.