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A New Cycle Slip Detection and Repair Method Using a Single Receiver's Single Station B1 and L1 Frequencies in

Xinyang Zhao¹, Zun Niu¹, Gaoxu Li¹

¹Department of Electronics, Peking University, Beijing 100871, China.

Sensors (Basel, Switzerland)

|January 16, 2020

Summary

This study introduces a new method for detecting and fixing cycle slips in indoor navigation systems. It improves positioning accuracy by avoiding pseudorange data and using a novel geometry-free combination with an adaptive Particle Swarm Optimization algorithm.

Keywords:

Particle Swarm Optimization algorithm cycle slip detection ground-based navigation multipath effect

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Area of Science:

GNSS (Global Navigation Satellite System) positioning
Signal processing for navigation

Background:

Cycle slip detection and repair are crucial for high-precision indoor navigation.
Existing methods often rely on pseudorange data or are designed for outdoor environments, making them unsuitable for indoor multipath conditions.

Purpose of the Study:

To propose a novel method for detecting and fixing cycle slips in indoor environments.
To improve the accuracy and reliability of indoor positioning systems.

Main Methods:

A geometry-free carrier phase combination using Beidou B1 and GPS L1 signals, excluding pseudorange data.
An improved adaptive Particle Swarm Optimization (PSO) algorithm for rapid cycle slip fixing.
Data collection using a ground-based navigation system and Ublox receivers.

Main Results:

The proposed method demonstrates superior performance in detecting and fixing cycle slips compared to existing techniques.
The geometry-free combination effectively mitigates multipath effects in indoor environments.
The adaptive PSO algorithm ensures quick and accurate cycle slip resolution.

Conclusions:

The developed method offers a robust solution for cycle slip issues in indoor GNSS positioning.
This approach enhances the precision of navigation and positioning in challenging indoor scenarios.