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Analysis of DME/DME Navigation Performance and Ground Network Using Stretched-Front-Leg Pulse-Based DME.

¹Department of Mechanical & System Design Engineering, Hongik University, 04066 Seoul, Korea. euihokim@hongik.ac.kr.

Sensors (Basel, Switzerland)

|October 3, 2018

Summary

This summary is machine-generated.

To improve aircraft navigation, this study introduces an advanced Distance Measuring Equipment (DME) using Stretched-Front-Leg (SFOL) pulses. This innovation enhances DME/DME positioning accuracy, offering a reliable alternative to Global Navigation Satellite Systems (GNSS).

Keywords:

APNT DME GNSS jamming

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Area of Science:

Aviation Technology
Navigation Systems Engineering
Signal Processing

Background:

Global Navigation Satellite Systems (GNSS) are primary aircraft navigation tools but are vulnerable to interference and jamming.
The Federal Aviation Administration (FAA) is adopting Distance Measuring Equipment (DME)/DME as a backup navigation system by 2030.
Current DME ranging accuracy (70-300m) is significantly lower than GNSS, impacting positioning performance.

Purpose of the Study:

To enhance the accuracy of DME/DME navigation systems.
To propose an advanced DME technology capable of achieving higher ranging accuracy.
To develop ground station augmentation algorithms for an improved DME/DME network.

Main Methods:

Development of an advanced DME utilizing a Stretched-Front-Leg (SFOL) pulse for improved ranging.
Introduction of optimal ground station augmentation algorithms to upgrade the existing DME network.
Evaluation of positioning performance and augmented network in diverse terrain regions.

Main Results:

The proposed SFOL pulse-based DME achieves a ranging accuracy of approximately 30 meters.
Augmentation algorithms enable DME/DME positioning accuracy up to 0.3 nautical miles (92.6 meters) with minimal new ground sites.
The system demonstrates effective positioning performance in regions with varying terrain.

Conclusions:

The advanced SFOL pulse-based DME significantly improves positioning accuracy, making DME/DME a more competent navigation alternative.
Optimal ground station augmentation strategies are crucial for efficient network transformation.
The proposed technology offers a viable solution to GNSS vulnerabilities in aircraft navigation.