Locata——一种新型的定位星座

本文介绍了由澳大利亚GPS生产商Locata公司研发的Locata全新定位技术,Locata技术在GNSS不可用时提供高精度定位能力。Locata技术包括时间同步伪卫星收发器（LocataLite）,多部LocataLite组成的网络（LocataNet）,发射的信号相当于GPS信号,并采用系统时间同步（TimeLoc）专利技术实现网内LocataLite的自主同步。Locata接收机（移动接收机）通过载波相位测量即可得到单点定位。

Locata, a New Positioning Constellation

Locata, a new positioning technology, which developed by Locata Corporation in Australia, is presented. It is designed to overcome the limitations of GNSS currently available, and can provide users with highly precise positioning service. A time-synchronized pseudolite transceiver, called a LocataLite is described in this paper. A network of LocataLites forms a LocataNET which transmits GPS-like signals. Each LocataLite dynamically synchronizes with other LocataLites using a patented method called TimeLoc. The single-point positioning using carrier-phase measurements for a mobile device（a Locata） is achieved.