SFOL DME Pulse Shaping Through Digital Predistortion for High-Accuracy DME

Autor:	Lee, Sunghwa, Kim, Euiho, Seo, Jiwon
Rok vydání:	2021
Předmět:	Electrical Engineering and Systems Science - Systems and Control Electrical Engineering and Systems Science - Signal Processing
Druh dokumentu:	Working Paper
DOI:	10.1109/TAES.2021.3123934
Popis:	The Stretched-FrOnt-Leg (SFOL) pulse is a high-accuracy distance measuring equipment (DME) pulse developed to support alternative positioning and navigation for aircraft during global navigation satellite system outages. To facilitate the use of the SFOL pulse, it is best to use legacy DMEs that are already deployed to transmit the SFOL pulse, rather than the current Gaussian pulse, through software changes only. When attempting to transmit the SFOL pulse in legacy DMEs, the greatest challenge is the pulse shape distortion caused by the pulse-shaping circuits and power amplifiers in the transmission unit such that the original SFOL pulse shape is no longer preserved. This letter proposes an inverse-learning-based DME digital predistortion method and presents successfully transmitted SFOL pulses from a testbed based on a commercial legacy DME that was designed to transmit Gaussian pulses. Comment: Submitted to IEEE Transactions on Aerospace and Electronic Systems
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2111.00717 Zobrazit plný text záznamu View this record from Arxiv