GNSS 3D attitude measurement system based on dual-antenna receiver with common clock

The high-precision measurement of attitude information is of great significance to the satellites, aircraft and vehicle. How to measure the three-dimensional attitude of the carrier efficiently and accurately becomes the hotspot in the related research field. This paper proposes a new GNSS 3D attitude measurement system based on dual-antenna receiver with common clock. This system uses single-difference model to get real-time settlement of the carrier high-precision attitude information. When the baseline of the system is 1m in static environment, the baseline measurement accuracy is 2 mm, the yaw accuracy is 0.08 degrees, the pitch accuracy is 0.15 degrees and the roll accuracy is 0.14 degrees. When the baseline of the system is 0.5m in dynamic environment, the yaw accuracy is 0.4526 degrees, the pitch accuracy is 0.4801 degrees and the roll accuracy is 0.4353 degrees. The experimental results show that the system has good performance in terms of stability and applicability. It can be used in multi-system combining attitude measurement in the future, which has a strong practical application value and broad prospects.