Performance Analysis of Long Baseline BDS RTK Positioning

This study investigates the performance of the BDS Navigation Satellite System (BDS) for positioning in India, focusing on Standalone Point Positioning (SPP), differential BDS (dBDS), and Real-Time Kinematic (RTK) modes. Given India’s strategic location in the Asia-Pacific region, BDS has the potential to significantly enhance GNSS applications. The research fills a critical gap in existing literature by providing the first comprehensive analysis of BDS’s performance in India, with a focus on satellite visibility, geometry, elevation-based availability, and position accuracy in both 2D and 3D dimensions. Data from two International GNSS Service (IGS) stations, LCK3 and IITK, located 90 km apart, were collected on 30 May 2024, for a detailed evaluation of BDS’s positioning accuracy. Results demonstrate that kinematic positioning, which leverages real-time data processing and continuous updates, offers the highest accuracy across all axes, followed by differential BDS and SPP. Specifically, kinematic positioning achieved minimal positional errors, particularly in the East, North, and Up directions, making it ideal for high-precision applications such as autonomous navigation and geodetic measurements. The study highlights the growing utility of BDS in India, showing that advanced correction techniques such as RTK can provide reliable, high-precision positioning solutions, positioning BDS as a competitive global navigation system for a wide range of applications.