The study of this paper indicate that the application of digital IF Software Radio framework is practicable in the receiver of the Satellite Positioning and Navigation system.

本文研究表明在卫星定位导航系统中使用中频数字化的软件无线电结构是可行的，同时大大简化了用硬件对接收的卫星信号进行处理时电路的复杂性。

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A design technique of a Differential Global positioning System (DGPS) digital beacon receiver is presented which can be used to improve the positioning precision.

研究了一种可用于提高GPS定位精度的差分gps (DGPS)数字信标接收机的设计和研制技术。

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Combining computer system and detecting device, the micro-positioning system of compound control is designed and researched. This system is based on feedforward and digital PID control.

结合检测装置和微机控制系统，设计并研制了基于前馈控制同数字PID反馈控制相结合的复合控制的微定位系统。

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And several companies had concept and prototype devices that envisioned digital cameras and global positioning system expansion devices that would fit into the SD card slot.

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The minivan he's slowly touring through the cul-de-sacs of suburban Detroit is painted bright orange and its roof rack bristles with electronics: a global positioning system antenna, a laser measuring system and 14 digital cameras.

FORBES: Magazine Article

Today, they've been supplanted even further by digital compasses that use electronic sensors and devices that take readings from Global Positioning System satellites.

FORBES: No. 3 The Compass