Satellite PSD Limits by Region
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Solution Overview
Problem
Existing satellite communication systems impose a fixed power spectral density (PSD) limit on terminals regardless of their location, failing to adapt to varying regional regulations and environmental conditions, which limits flexibility and efficiency in radio frequency signal transmission.
Innovation Solution
A system and method that dynamically assign power spectral density (PSD) limits to terminals based on their location by dividing the coverage area into regions with defined boundaries, using a point-in-polygon test to determine the applicable PSD limit, and accounting for antenna directivity and radome effects, allowing for location-specific PSD adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed PSD limit is applied to all terminals regardless of location, then device complexity is reduced and ease of operation is improved, but adaptability to regional regulations and environmental conditions deteriorates
Solution Approach 1:
The patent divides the satellite coverage area into multiple geographic regions, each with its own PSD limit values. The system determines which region a terminal is located in and applies the appropriate PSD limits for that specific region. This allows different parts of the coverage area to have different PSD requirements, improving adaptability to local regulations while maintaining a manageable system through automated region-based classification.
2Adaptability or versatility
If manual selection between PSD possibilities is required at terminal installation, then adaptability to regional regulations is improved, but ease of operation deteriorates and loss of time increases
Solution Approach 1:
The system automatically determines the terminal's geographic region based on its location information and autonomously selects and applies the appropriate PSD limits. This eliminates the need for manual configuration by users or technicians, as the system performs the region identification and PSD limit selection automatically, improving ease of operation while maintaining regulatory compliance.
Solution Approach 2:
The system uses terminal location information as feedback to dynamically determine the appropriate PSD limits. By continuously monitoring or receiving location data from terminals and automatically adjusting PSD requirements based on the determined region, the system ensures compliance without requiring manual intervention, resolving the contradiction between adaptability and ease of operation.
3Productivity
If location-specific PSD limits are implemented, then adaptability to environmental conditions and regional regulations is improved, but device complexity and measurement precision requirements increase
Solution Approach 1:
The satellite coverage area is segmented into multiple discrete geographic regions with defined boundaries. Each region is assigned specific PSD limit values based on local regulations and environmental conditions. This segmentation approach enables location-specific PSD management, improving transmission efficiency by allowing optimal power levels in different regions while keeping system complexity manageable through structured region definitions and automated classification.
Data Source
AI summary
A system and method for providing terminals with permitted power spectral density (PSD) limits for regions of a coverage area including: dividing a coverage area into regions, each region having a boundary; assigning a PSD limit to each region; receiving a location of a transmitting entity; determining a transmitting entity region from the regions based on the location; and transmitting with a respective PSD limit of the transmitting entity region.