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首页> 外文会议>Saint Petersburg International Conference on Integrated Navigation Systems; 20030526-28; St.Petersburg(RU) >THE AN/ASN-128B DOPPLER/GPS NAVIGATION SYSTEM
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THE AN/ASN-128B DOPPLER/GPS NAVIGATION SYSTEM

机译：AN / ASN-128B多普勒/ GPS导航系统

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摘要

GPS is a widely accepted highly accurate navigation system that provides not only extremely accurate position but velocity and time as well. Military users of GPS in airborne applications often combine it with a back-up dead-reckoning navigation system such as a Doppler radar or an Inertial Navigation System (INS). This approach provides a ride-through or back-up capability should GPS data become unavailable due to accidental or intentional signal interference or operation in areas where the signals are blocked by man-made or natural obstructions. One such integrated system, the AN/ASN-128B Doppler GPS Navigation Set (DGNS), is currently in production for the U.S. Army. The AN/ASN-128B is an AN/ASN-128 Lightweight Doppler Navigation System with an embedded 1-card GPS receiver. The AN/ASN-128 has been in the inventory of the U.S. Army and in military aircraft and helicopters of over 20 countries for over 25 years. Trimble Navigation LTD developed the GPS receiver embedded in the ASN-128B. This receiver is a one of a large number of GPS receivers successfully developed by them. GPS position data are used to continuously update position data computed from Doppler radar velocity and aircraft heading; the latter is obtained from the helicopter's existing magnetic compasses. Should GPS data not be available, navigation and guidance continues using Doppler derived position data starting at the last valid position provided to the Doppler by the GPS. The AN/ASN-128B has enabled the U.S. Army to incorporate GPS with minimum impact on the airframe and hence minimum helicopter retrofit costs. Logistics, pilot and maintenance training, and other system support functions have been in place for the Doppler for many years. Embedding of GPS into the existing Doppler navigation system takes advantage of these capabilities, thereby further reducing retrofit costs. The paper will briefly describe the ASN-128B. Operation and performance of a Doppler radar navigation system will be reviewed. The performance advantages obtained by combining the two sensors into a hybrid system will be discussed.
机译：GPS是一种广为接受的高精度导航系统，它不仅可以提供极其精确的位置，还可以提供速度和时间。机载应用中的GPS军事用户通常将其与备用多用导航系统（例如多普勒雷达或惯性导航系统（INS））结合使用。如果GPS数据由于意外或故意的信号干扰或在信号被人为或自然障碍物阻挡的区域中的操作而变得不可用，则此方法可提供穿越或备份功能。一种这样的集成系统，即AN / ASN-128B多普勒GPS导航仪（DGNS），目前正在为美国陆军生产。 AN / ASN-128B是具有嵌入式1卡GPS接收器的AN / ASN-128轻型多普勒导航系统。超过25年以来，AN / ASN-128一直在美国陆军以及20多个国家/地区的军用飞机和直升机中使用。 Trimble Navigation LTD开发了嵌入在ASN-128B中的GPS接收器。该接收器是他们成功开发的众多GPS接收器之一。 GPS位置数据用于不断更新根据多普勒雷达速度和飞机航向计算出的位置数据；后者是从直升机现有的磁罗经中获得的。如果没有GPS数据，则从GPS提供给多普勒的最后一个有效位置开始，继续使用多普勒导出的位置数据进行导航和制导。 AN / ASN-128B使美国陆军能够将GPS纳入机身，从而对机身的影响降至最低，从而使直升机的改装成本降至最低。多年以来，多普勒一直在进行后勤，飞行员和维修培训以及其他系统支持功能。将GPS嵌入到现有的多普勒导航系统中可利用这些功能，从而进一步降低改造成本。本文将简要介绍ASN-128B。多普勒雷达导航系统的运行和性能将受到审查。将讨论通过将两个传感器组合到混合系统中而获得的性能优势。

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