The surveying of the orbit line and the positioning of the orbital vehicle often utilize GPS positioning technique.

轨道线路测量和有轨车辆的定位常采用GPS定位技术。

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What is a space vehicle launching entity required to do according to the current Government Orbital Debris Mitigation Standard Practices?

根据现行的政府轨道碎片缓减标准做法，航天器发射实体需要做什么？

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In such a scheme, a payload vehicle (holding, say, a satellite) would piggyback to high altitude aboard the scramjet, which in theory could reach near-orbital speeds.

在这个方案中，一个载物飞行器(比如说搭载着卫星)将(首先)搭载超燃冲压发动机进入相当高度，理论上能够达到近似轨道速度。

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Like other suborbital providers, XCOR eventually wants to develop an orbital vehicle.

CNN: Private space pioneers: We're inheritors of Apollo legacy

Sierra Nevada Space Systems showed video of a successful flight of their Dream Catcher orbital space vehicle this year.

FORBES: Private Space Transportation Reaching New Heights

The X-37B Orbital Test Vehicle is led by the Air Force Rapid Capabilities Office, and is designed to demonstrate reusable spacecraft technologies for America's future in space and operating experiments which can be returned to, and examined, on Earth.

ENGADGET: USAF relaunches its first X-37B on a slightly less mysterious spaceflight