A Look at Navigation and Secure AJ Communications Technology and their Relation to Precision Oscillators

H. Fruehauf
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Abstract

Since the advent of miniature Rubidium atomic oscillators, the long sought-after concepts of one-way ranging systems have become fully realized. From the decade-old OMEGA concepts to the future NAVSTAR-GPS network, the miniature atomic oscillator has become, and will continue to be, the heart of the navigation systems. In recent years, however, the spread spectrum communication technology has surfaced and is also becoming more and more integrated with atomic oscillators, reaching formidable A-J (antijam) and systems C3/NAV capabilities through the use of such devices. This paper describes the types of precision oscillators available and compares all the major parameters to help designers select the proper hardware for such systems. In addition, some applications of precision oscillators in existing C3/NAV systems will be given as well as what systems designers can expect from this technology in the near future.
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导航和安全AJ通信技术及其与精密振荡器的关系
自从微型铷原子振荡器问世以来,人们长期追求的单向测距系统的概念已经完全实现。从十年前的OMEGA概念到未来的NAVSTAR-GPS网络,微型原子振荡器已经成为并将继续成为导航系统的核心。然而,近年来,扩频通信技术已经浮出水面,并且越来越多地与原子振荡器集成,通过使用这些设备达到强大的A-J(抗干扰)和系统C3/NAV能力。本文介绍了可用的精密振荡器的类型,并比较了所有主要参数,以帮助设计人员为此类系统选择合适的硬件。此外,将给出精密振荡器在现有C3/NAV系统中的一些应用,以及系统设计人员在不久的将来对该技术的期望。
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