Satellite Receiver Eccentric Orbit High Elevation Angle
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Solution Overview
Problem
Providing high-data-rate communication with satellites in densely populated regions is challenging due to frequency congestion and issues with shorter wavelengths, such as noise, path loss, and scattering, which reduce multipath power and make it difficult to maintain reliable communication.
Innovation Solution
The use of satellites in eccentric geosynchronous or near-geosynchronous orbits with high elevation angles and the implementation of a satellite receiver with a switchable array of antenna elements that dynamically select the best antenna based on location, motion, and terrestrial wireless communication network utilization, allowing for high-data-rate communication in the V and W bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If shorter wavelengths (V band or W band frequencies) are used for satellite communication, then available bandwidth is increased, but path loss and atmospheric loss increase
Solution Approach 1:
The patent changes the orbital parameters of satellites from traditional geosynchronous orbits to eccentric geosynchronous or highly elliptical orbits with higher inclination angles. This parameter change allows satellites to pass over higher latitudes and densely populated regions, providing better signal coverage and reduced path loss at V band and W band frequencies
2Quantity of substance
If shorter wavelengths are used for satellite communication, then bandwidth is increased, but scattering by rough surfaces increases reducing multipath power
Solution Approach 1:
The patent introduces a temporal dimension to the communication system by using satellites in eccentric orbits that periodically pass over target regions. This allows the system to exploit time-varying channel conditions and select optimal transmission windows when scattering effects are minimized, rather than relying on static high-frequency links
3Area of stationary object
If satellites in traditional geosynchronous orbit are used, then coverage area is broad, but ground elevation angle is low reducing communication quality
Solution Approach 1:
The patent employs asymmetric orbital designs where satellites follow eccentric trajectories with higher inclination angles instead of symmetric equatorial geosynchronous orbits. This asymmetry allows satellites to spend more time over higher-latitude regions and maintain higher elevation angles for ground stations in densely populated areas, improving communication reliability
4Productivity
If high-frequency links are used for satellite communication, then data rate can be increased, but noise and Doppler effect problems worsen
Solution Approach 1:
The patent implements feedback mechanisms where ground stations and satellites continuously exchange information about channel conditions, satellite position, and signal quality. This enables dynamic adjustment of transmission parameters, frequency selection, and antenna beamforming to compensate for noise and Doppler effects, maintaining high data rates in V band and W band communications
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enables high-data-rate communication with reduced path loss and increased bandwidth, improving communication performance and customer experience by adapting to different conditions and populations densities.
Implementation Method 1
one or more antenna elements that receive wireless signals associated with one or more satellites and to provide corresponding electrical signals
Data Source
AI summary
A satellite receiver for wireless signals having carrier frequencies in the V or the W band of frequencies is described. The satellite receiver may receive the wireless signals at high elevation angles, such as greater than 62°. This high elevation angle may reduce losses, which may allow the satellite receiver to communicate at a data rate of at least 50 Mbps. In order to accommodate these system requirements, the one or more satellites that provide the wireless signals may have eccentric geosynchronous or near-geosynchronous orbits that are inclined relative to an equatorial plane of the Earth, such as an eccentricity between 0.12 and 0.3. Moreover, the one or more satellites may have ground tracks substantially along one or more continents, and may be in view of dense population regions in the one or more continents with a higher frequency than low-density population regions in the one or more continents.