Design and Implementation of Vector Tracking Loop for High-Dynamic GNSS ReceiverDesign and Implementation of Vector...

Area of Science:

• Satellite navigation systems
• Signal processing
• Aerospace engineering

Background:

• Conventional scalar tracking loops (STL) struggle with high-dynamic satellite navigation signals, leading to frequent tracking interruptions and impacting navigation continuity.
• Existing vector tracking loop (VTL) methods face real-time hardware implementation challenges, including synchronization issues and high computational load.

Purpose of the Study:

• To propose a novel implementation framework for vector tracking loops (VTL) suitable for real-time hardware receivers.
• To address the limitations of existing VTL methods regarding synchronization and computational demands.

Main Methods:

• Development of a VTL implementation framework utilizing a partial open-loop numerically controlled oscillator (NCO) control mode.
• Detailed introduction of the VTL structure, navigation filter design, and critical hardware implementation aspects.
• Performance verification using a Global Positioning System (GPS) simulator.

Main Results:

• The proposed VTL framework demonstrates real-time operational capability with minor modifications to existing receiver platforms.
• Significant improvements observed in tracking continuity for high-dynamic signals.
• Enhanced tracking sensitivity, positioning accuracy, and faster recovery time for interrupted signals compared to STL.

Conclusions:

• The proposed VTL implementation framework offers a practical solution for robustly tracking high-dynamic satellite navigation signals.
• This approach overcomes the limitations of traditional STL and addresses the implementation challenges of existing VTLs.
• The VTL framework provides superior performance in terms of continuity, accuracy, and signal recovery in dynamic environments.