Overview
This project aims to advance the field of positioning, navigation, and timing (PNT) by integrating Low Earth Orbit (LEO) satellite signals with existing Global Navigation Satellite System (GNSS) technologies. The primary focus is on improving positioning and navigation capabilities, particularly within the professional high-end GNSS market, such as precision agriculture. Objectives: 

Systematic Review: Conduct a comprehensive review of the LEO PNT concept, methodology, and outcomes to understand the benefits of integrating LEO signals with GNSS systems. 

Prototype Development: Develop a prototype receiver capable of tracking LEO satellite measurements alongside Medium Earth Orbit (MEO) GNSS signals. 

Signal Processing: Implement advanced signal processing algorithms, including Kalman filtering and carrier phase ambiguity resolution, to accurately acquire and track signals from LEO satellites. 

Performance Evaluation: Assess the impact of incorporating LEO signals into the navigation solution by evaluating key performance metrics such as position accuracy, convergence time, reliability, and signal integrity. 

Methodology 

Literature Review: Analyze existing research on LEO PNT to identify advantages and potential integration strategies with GNSS systems. 

Prototype Receiver: Design and develop a receiver that utilizes advanced signal processing techniques to track LEO and MEO satellite signals. 

Signal Processing Techniques: Apply sophisticated processing methods to the received measurements to compute a highly precise navigation solution. 

Performance Metrics: Evaluate the enhancements in position accuracy, convergence time, reliability, and signal integrity achieved by integrating LEO signals. 

Expected Outcomes 

Enhanced Navigation Solutions: Improved positioning and navigation capabilities for GNSS receivers, particularly in challenging environments. 

Precision Agriculture Impact: Assess the potential benefits of LEO signal integration in precision agriculture, leading to more accurate and reliable navigation solutions. 

Future GNSS Products: Inform decisions regarding the integration of LEO signals into future iterations of GNSS receiver products. 

Conclusion 

This research and development effort aims to leverage the unique capabilities of LEO satellites to enhance the overall performance and robustness of GNSS receivers. By systematically reviewing the LEO PNT concept and developing a prototype receiver, the project seeks to provide valuable insights into the integration of LEO signals for improved navigation applications in various professional markets