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Application of Novel Signal Processing Algorithms for the Detection and Minimization of Skywave Interfering Signals in Loran Receivers
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2011 (English)In: Applied Signal and Image Processing: Multidisciplinary Advancements / [ed] Qahwaji, Rami; Green, Roger; Hines, Evor, Hershey: IGI Global , 2011, 28-44 p.Chapter in book (Refereed)
Abstract [en]

Skywave interference commonly affects Loran receivers’ performance. Traditional skywave rejectionmethods that use fixed, worst-case, sample timing are far from optimal. This chapter reports on novel signal processing techniques for measuring in real-time the delay and strength of the varying skywave components of a Loran signal relative to the groundwave pulse. The merits and limitations of these techniques will be discussed. Their effectiveness will be assessed by theoretical analysis, computer simulations under a range of realistic conditions, and by testing using off-air signals. A prototype Loran system employing the proposed techniques is also presented. This work establishes a basis on which to design a Loran receiver capable of adjusting its sampling point adaptively to the optimal value in a constantly-changing skywave environment. Such receivers promise to improve significantly the accuracy and reliability of positioning under adverse operational conditions.

Place, publisher, year, edition, pages
Hershey: IGI Global , 2011. 28-44 p.
Keyword [en]
Loran, Navigation, Skywave, Receivers
National Category
Telecommunications Signal Processing
URN: urn:nbn:se:bth-7446DOI: 10.4018/978-1-60960-477-6.ch002Local ID: 978-1-60960-477-6OAI: diva2:835062
Available from: 2012-09-18 Created: 2011-11-01 Last updated: 2015-06-30Bibliographically approved

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