GEO Satellite Emergency Messaging Alignment System
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Solution Overview
Problem
Current satellite communication systems face challenges in providing reliable emergency messaging services, especially in areas with inadequate cellular coverage, due to signal blockage by terrain features and the high velocity of Low Earth Orbit (LEO) satellites.
Innovation Solution
A satellite communication system that receives emergency message requests from user equipment (UE) and determines current location information to compute a threshold azimuth angle for alignment with a geosynchronous equatorial orbit (GEO) satellite. The system generates real-time alignment recommendations and validates them based on signal strength and quality before initiating emergency message transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If LEO satellites are used for emergency messaging services, then extensive service areas can be covered, but signal blockage by terrain features and high satellite velocity lead to unreliable communication
Solution Approach 1:
The patent changes the orbital parameter of the satellite system from LEO to GEO, transitioning from low Earth orbit (500-1400 km altitude) to geosynchronous equatorial orbit (35,786 km altitude). This parameter change resolves the contradiction by providing both extensive coverage area and reliable communication, as GEO satellites remain stationary relative to ground users and operate at high elevation angles that avoid terrain blockage
2Loss of energy
If LEO satellites are positioned closer to Earth, then pathloss advantage is achieved, but G/T received by satellite varies significantly and body loss occurs
Solution Approach 1:
The patent changes the orbital altitude parameter from LEO (500-1400 km) to GEO (35,786 km), which fundamentally alters the pathloss characteristics. Although GEO involves longer transmission distances, the stationary position and high elevation angle provide stable G/T values and eliminate body loss, achieving reliable signal reception
3Area of stationary object
If LEO satellites traverse locations at high velocities, then extensive coverage is provided, but ability to establish clear line of sight is complicated
Solution Approach 1:
The patent inverts the conventional approach by using a stationary GEO satellite instead of a moving LEO satellite. This inversion resolves the contradiction by eliminating satellite motion, allowing users to easily establish and maintain line of sight without tracking complex orbital movements, while the stationary satellite provides continuous coverage
Data Source
AI summary
A system and method for managing emergency messaging services is disclosed. The system receives request for transmitting emergency message from user equipment (UE) to geosynchronous equatorial orbit (GEO) satellite. Further, the system determines current location information of the UE. The system determines satellite location of the GEO satellite in proximity to the UE. The system computes a threshold azimuth angle between the UE and the GEO satellite. Further, the system determines an azimuth angle of the UE. Furthermore, the system determines a deviation level between the computed threshold azimuth angle and the determined azimuth angle of the UE. The system further generates an alignment recommendation message for the UE at real-time. Furthermore, the system validates the alignment recommendation message based on signal strength, and signal quality of the UE. Additionally, the system initiates transmission of the emergency message from UE to GEO satellite.