Extracting Pseudorange Data from Embedded GNSS Chipsets

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Solution Overview

Problem

Conventional cellular devices with integrated GNSS chipsets primarily provide position fixes but do not make available pseudorange information for use outside the chipset, limiting its utilization in surveying and positioning operations.

Innovation Solution

An embedded GNSS chipset in cellular devices calculates and extracts pseudorange information, allowing its use elsewhere in the device, enabling improved accuracy position fixes through processing and integration with other location-based services.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If conventional cellular devices with integrated GNSS chipsets are used, then position fixes are provided, but pseudorange information is not made available for external use

Engineering Contradiction:
Improvepseudorange information availabilityVSAvoidchipset integration level
Core Design Contradiction:
Loss of informationVSDevice complexity

Solution Approach 1:

The patent extracts pseudorange information from the integrated GNSS chipset and makes it available to external applications. The chipset accessor logic and pseudorange information extractor logic specifically target and extract this otherwise inaccessible data, allowing surveying and positioning operations to utilize the information while maintaining the integrated architecture.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent introduces intermediary logic components (chipset accessor logic, pseudorange information extractor logic, pseudorange information processor logic) that mediate between the GNSS chipset and external applications. These intermediaries enable controlled access to pseudorange information without requiring changes to the core chipset integration, resolving the contradiction between information availability and system complexity.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Measurement precision

If pseudorange information is extracted and processed, then positioning accuracy is improved, but device complexity increases

Engineering Contradiction:
Improvepositioning accuracyVSAvoidprocessing logic complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent segments the processing functionality into distinct logic modules: chipset accessor logic for data retrieval, pseudorange information extractor logic for data extraction, processor logic for accuracy improvement, and position accuracy improvement determination logic for decision-making. This segmentation allows complex processing to be divided into manageable, independent functions that can be implemented systematically.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The device uses its own extracted pseudorange information to improve its positioning accuracy without requiring external reference systems. The position accuracy improvement determination logic autonomously determines which accuracy improvements to apply based on available data, enabling the device to serve itself in enhancing measurement precision.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS9456067B2External electronic distance measurement accessory for a mobile data collection platform
Publication Date: 2016.09.27 TRIMBLE NAVIGATION LTD
  • US9456067B2 patent drawing
  • US9456067B2 patent drawing
  • US9456067B2 patent drawing

AI summary

A known fixed relationship is maintained between an external electronic distance measurement accessory and a mobile data collection platform that are physically coupled together. A light beam axis of the external electronic distance measurement accessory is parallel with an optical axis of an entrance pupil of the mobile data collection platform. The external electronic distance measurement accessory integrates with the mobile data collection platform. The external electronic distance measurement accessory receives control instructions from the mobile data collection platform.