It can provide some reference worth to expand the application field of Software Radio and study the framework of the satellite positioning and navigation receive system.

所做工作对开拓软件无线电的应用领域和卫星定位导航系统接收机结构的研究有一定的应用价值。

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It can provide some reference worth to expand the application field of Software Radio and study the framework of the Satellite Positioning and Navigation receiver system.

这对开拓软件无线电的应用领域和卫星定位导航系统接收机结构的研究有一定的参考价值。

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The paper introduces the Germanic satellite positioning and navigation service. According to its precision, respond time, its purpose, it was divided into four-level service.

本文介绍德国的卫星定位与导航服务，及其按精度、时间响应和目的所分成的四个级别的服务。

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Each onboard ADS-B set consists of a Global Positioning System satellite navigation unit, two Pentium microprocessors, some software and a radio transmitter-receiver--not much more gear than you would find behind the dash of a new Cadillac.

FORBES: Free flight

She said that US diplomats and scientists should ensure that the Global Positioning System should become the world's standard satellite navigation system.

BBC: Albright marries science and diplomacy