公开(公告)号：US06459989B1

公开(公告)日：2002-10-01

申请号：US09517897

申请日：2000-03-03

申请人： Michael Kirkpatrick ,  Jeffrey Casper ,  Clay Ross ,  D. Scott Seaton ,  Christian Gellrich ,  Michael Cutter ,  James Binnion

发明人： Michael Kirkpatrick ,  Jeffrey Casper ,  Clay Ross ,  D. Scott Seaton ,  Christian Gellrich ,  Michael Cutter ,  James Binnion

IPC分类号： G01C200

CPC分类号： G01S5/0027 ,  G01S1/725 ,  G01S15/74 ,  G01S19/10 ,  G01S19/14 ,  G01S19/46 ,  G01S19/48 ,  G01S2205/002

摘要： An integrated indoor and outdoor positioning system and method. A first communication unit aperiodically emits an ultrasonic signal. A second communication unit receives the ultrasonic signal and transmits an identification signal in response to receiving the ultrasonic signal. One of the two communication units is placed at a predetermined position and the other of the two communication units is placed with an object. Identification information obtained from the identification signal is used to determine position information indicating that the object is at the predetermined position. The first communication unit is placed at the predetermined position and the second communication unit accompanies the object. Alternatively, the first communication unit accompanies the object and the second communication unit is placed at the predetermined position. One of the two communication units may also include a GPS receiver for receiving GPS signals from a plurality of satellites or pseudolites and computing position information therefrom. The GPS receiver applies differential GPS corrections computed by a GPS reference receiver to improve the accuracy of the position information. Position information is transmitted to a base station over an assigned radio frequency and during a time slot allocated to the communication unit that is transmitting the position information.

摘要翻译： 一体化室内外定位系统及方法。 第一通信单元非周期性地发射超声波信号。 第二通信单元接收超声波信号并且响应于接收到超声波信号而发送识别信号。 两个通信单元中的一个被放置在预定位置，并且两个通信单元中的另一个放置有对象。 使用从识别信号获得的识别信息来确定表示物体在预定位置的位置信息。 第一通信单元被放置在预定位置，并且第二通信单元伴随对象。 或者，第一通信单元伴随对象，并且第二通信单元被放置在预定位置。 两个通信单元中的一个还可以包括用于从多个卫星或伪卫星接收GPS信号并从其计算位置信息的GPS接收器。 GPS接收机应用由GPS参考接收机计算的差分GPS校正，以提高位置信息的准确性。 位置信息通过分配的射频以及分配给发送位置信息的通信单元的时隙发送到基站。