Regional Position Estimator for GNSS Devices
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Solution Overview
Problem
Conventional communication devices are pre-configured to operate in a specific geographical area, limiting their use to that area and preventing them from adjusting operating frequencies and power levels in real-time to comply with local regulations.
Innovation Solution
A device equipped with a processor, memory, GNSS receiver, and location identification logic that determines a regional position by identifying contours of geolocations, calculating pseudo range differences, and synchronizing a local clock signal to accurately configure operating frequencies and power levels based on the determined location.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If devices are pre-configured to operate in a specific geographical area, then they can comply with local regulations, but they cannot be used in other geographical areas
Solution Approach 1:
The device performs preliminary location determination using GNSS receivers and location identification logic before operation. The system pre-calculates pseudo range differences and identifies contour intersections to determine geographical location in advance, enabling automatic configuration selection without user intervention
Solution Approach 2:
The device dynamically adjusts its operating configuration based on real-time location determination. The system continuously monitors GNSS satellite signals, recalculates position using pseudo range difference methods, and automatically switches between different geographical area configurations as the device moves across boundaries
2Measurement precision
If GNSS receivers require visibility to five satellites for positioning, then location accuracy is improved, but indoor positioning becomes impossible
Solution Approach 1:
The system uses partial action by requiring only four satellite signals for basic position determination through pseudo range difference calculation, rather than the conventional five satellites. This partial measurement approach provides sufficient location accuracy for configuration purposes while enabling indoor operation where satellite visibility is limited
Solution Approach 2:
The system changes the measurement parameters by using pseudo range difference between signal pairs from the same satellite received at different time instants, rather than using absolute pseudo range measurements. This parameter transformation allows position determination with fewer satellites by exploiting temporal variations in signal propagation
3Extent of automation
If devices cannot determine location without five satellite signals, then pre-configuration is maintained, but real-time frequency and power adjustment is prevented
Solution Approach 1:
The system implements feedback by continuously determining device location through GNSS signal processing and pseudo range difference calculation. The location information feeds back to the configuration module, which automatically adjusts operating frequencies and power levels to comply with local regulations, creating a closed-loop control system that ensures ongoing regulatory compliance
Data Source
AI summary
Devices, systems, methods, and processes for accurately determining a location of a device are described herein. The device may receive Global Navigation Satellite System (GNSS) data from two satellites in two time periods. The device can determine two pseudo range differences corresponding to the two satellites. The device may further determine two contours based on the two pseudo range differences. An overlap between the two contours may be utilized by the device to determine the location. The device can also determine the location of the device based on a contour and an estimated location. The device may utilize a Global Positioning System (GPS) database, an Access Points (AP) database, or one or more servers to retrieve the estimated location. The device can further configure an operating frequency and an output power based on the location in real-time.