Earth Station Antenna Alignment via Satellite Uplink Telemetry
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Solution Overview
Problem
Existing methods for aligning earth station antennas with satellite antennas require access to downlink signals and are limited by the need for monitoring stations in specific geographical areas, including land-based facilities, with no solution for permanent monitoring at sea and inefficiencies in signal measurement accuracy.
Innovation Solution
A method and system that aligns earth station antennas with satellite antennas by measuring uplink signal parameters on the satellite and transmitting these via telemetry, allowing for accurate orientation without relying on downlink signals or geographical coverage, utilizing geolocation technology and existing hardware to maximize signal strength and polarization alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If downlink signal measurement is used for alignment, then alignment can be performed with existing ground infrastructure, but measurement accuracy is degraded due to downlink path impairments and geographical coverage limitations
Solution Approach 1:
The patent inverts the traditional alignment approach by measuring uplink signals at the satellite instead of measuring downlink signals at ground-based monitoring stations. This reversal eliminates the need for extensive ground infrastructure and removes downlink path impairments from the measurement process, thereby improving both measurement accuracy and reducing system complexity.
Solution Approach 2:
The patent introduces telemetry as an intermediary mechanism to transmit measurement data from the satellite to ground stations. This allows the alignment measurement function to be performed at the satellite while still providing data to ground-based operators, effectively decoupling the measurement location from the data reception location.
2Adaptability or versatility
If multiple land-based monitoring stations are deployed to cover different geographical areas, then satellite coverage can be monitored, but system complexity and cost increase significantly
Solution Approach 1:
The patent makes the satellite itself universal by enabling it to perform alignment measurements for multiple ground stations across different geographical areas. Instead of requiring dedicated monitoring stations for each coverage zone, the satellite's uplink signal measurement capability serves all ground stations within its coverage area, eliminating the need for multiple land-based facilities.
Solution Approach 2:
The satellite performs alignment measurements autonomously by detecting uplink signals from ground stations. This self-service capability eliminates the need for external ground-based monitoring infrastructure, as the satellite independently measures and reports alignment data through its telemetry system.
3Adaptability or versatility
If permanent monitoring stations are established at sea or in dangerous environments, then satellite coverage in remote areas can be monitored, but operational safety and cost are compromised
Solution Approach 1:
The patent uses telemetry as an intermediary to transmit measurement data from the satellite to safe, land-based ground stations. This allows the measurement function to be performed in remote areas (where the satellite covers) while the data reception and processing occur in safe, accessible locations, eliminating the need for personnel to operate in dangerous environments.
Solution Approach 2:
The satellite autonomously performs measurements in remote coverage areas and transmits data via telemetry, eliminating the need for human operators to physically presence in dangerous or inaccessible locations. The system achieves remote area monitoring capability while maintaining operational safety.
Data Source
AI summary
A method for aligning an earth station antenna with a satellite antenna includes sending an uplink signal from the earth station antenna to the satellite antenna; measuring at least a strength of the uplink signal received by the satellite antenna; sending by telemetry the measured signal strength to a telemetry station; adjusting the orientation of the earth station antenna in order to maximize the measured signal strength.