초록 ▼

A multipath detection method for use in a GPS position determination system includes providing a code pseudorange measurement representative of a range of an antenna to a space vehicle and a carrier phase pseudorange measurement representative of the range of the antenna to the space vehicle. A code

A multipath detection method for use in a GPS position determination system includes providing a code pseudorange measurement representative of a range of an antenna to a space vehicle and a carrier phase pseudorange measurement representative of the range of the antenna to the space vehicle. A code-carrier measurement difference is then generated between the code pseudorange measurement and the carrier phase pseudorange measurement. This code-carrier measurement difference is examined to determine if a multipath component is present. If, the difference indicates that multipath is likely to be present, use of such measurements in computing position solutions, such as attitude solutions, is avoided. A multipath detection system for carrying out the method is also described.

대표청구항 ▼

[ What is claimed is:] [1.] A multipath detection method for use in a GPS position determination system including a plurality of antennas for receiving signals from a plurality of space vehicles to compute position solutions, the method comprising the steps of:providing a code pseudorange measuremen

[ What is claimed is:] [1.] A multipath detection method for use in a GPS position determination system including a plurality of antennas for receiving signals from a plurality of space vehicles to compute position solutions, the method comprising the steps of:providing a code pseudorange measurement representative of a range of an antenna of the plurality of antennas to a space vehicle of the plurality of space vehicles;providing a carrier phase pseudorange measurement representative of the range of the antenna to the space vehicle;generating a code-carrier measurement difference between the code pseudorange measurement and the carrier phase pseudorange measurement;examining the code-carrier measurement difference to determine if a multipath component is present; andavoiding, the use of measurements generated using the antenna and the space vehicle in computing a position solution if a multipath component of the code-carrier measurement difference is detected.