The system is easy to be jammed as a result of active positioning mode.

由于其定位过程是有源主动定位，容易受到干扰。

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Basing on the Double star Active Positioning System, this article conducted the research on the Beidou Tri-star Passive Positioning System.

本文在北斗双星有源定位系统的基础上进行了三星无源定位的研究。

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"Beidou" double satellite positioning system, adopting two geosynchronous satellites to position, has the characteristic of high precision in positioning and active positioning mechanism.

北斗双星定位系统(简称双星定位)利用两颗地球同步卫星进行定位，具有定位精度高、采用有源定位体制的特点。

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Importantly for Apple, there are over 225M active iTunes accounts today positioning Apple to have a significant role in mobile commerce.

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The most active options on TJX Companies suggest at least one strategist is positioning for fresh all-time highs in the price of the underlying in the near term, while other traders may not be assuming as optimistic a stance on the name.

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Microsoft's scaled-down OS, Windows CE, is already appearing in cable boxes, and Microsoft is positioning it to create other appliances with attitude -- let's call them active appliances.

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