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Market Potential of Hybrid GPS/LORAN-C Receivers

机译：混合GPS / LORAN-C接收器的市场潜力

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Since several years now, GPS as a powerful high accuracy positioning and navigation systemrnhas an enormous impetus on all fields of navigation applications. Nevertheless, today GPS isrnnot regarded as being a system which can be certified as sole means of navigation for safetyof-rnlife applications, in particular for aviation and maritime purposes. Following an IALArnrecommendation, it is required to use two independent and complementary systems for anyrnmaritime applications, for example DGPS and LORAN-C.rnAlthough the absolute accuracy of LORAN-C is not very high (approximately 200-400 m), thernsystem is superior to non-augmented GPS with regard to availability and integrity. Notably,rnLORAN-C's low-frequency signal properties show completely different immunity to noise,rnfading and interference to the corresponding properties of GPS. For those reasons, theserncomplementary system features form a good basis for integrated (hybrid) navigation systems.rnRemarkably, LORAN-C in Europe is under civil control which gives an importantrncontribution to the institutional question [ 1 ].rnIn 1999, Avionik Zentrum Braunschweig together with Reelektronika from the Netherlands,rnhas investigated the potential of combined (hybrid) (D)GPS/LORAN-C navigation receiversrnwithin the frame of a project partly sponsored by the European Commission. This paperrnpresents the results of a recent market survey especially reflecting the current world widernsituation of LORAN-C.
机译：自几年以来，GPS作为一种功能强大的高精度定位和导航系统，在导航应用的所有领域都具有巨大的推动力。然而，如今，GPS还不被认为是可以被认证为生命安全应用，尤其是航空和海上目的的唯一导航手段的系统。按照IALArn的建议，对于任何海上应用，都需要使用两个独立且互补的系统，例如DGPS和LORAN-C。rn尽管LORAN-C的绝对精度不是很高（大约200-400 m），但该系统优于关于可用性和完整性的非增强型GPS。值得注意的是，rnLORAN-C的低频信号特性显示出对噪声，衰减和对GPS相应特性的干扰完全不同的抗扰性。出于这些原因，现代的互补系统特性为集成（混合）导航系统奠定了良好的基础。rn值得注意的是，欧洲的LORAN-C受民用管制，这为制度性问题做出了重要贡献[1]。1999年，Avionik Zentrum Braunschweig和来自荷兰的Reelektronika在欧盟委员会部分资助的项目框架内，研究了组合（混合）（D）GPS / LORAN-C导航接收机的潜力。本文介绍了最近的一项市场调查的结果，尤其反映了LORAN-C当前在世界范围内的地位。

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