Position finding using simple Doppler sensors

[摘要] An increasing number of modern applications and services is based on theknowledge of the users actual position. Depending on the application a roughposition estimate is sufficient, e. g. services in cellular networks that usethe information about the users actual cell. Other applications, e. g.navigation systems use the GPS-System for accurate position finding.Beyond these outdoor applications a growing number of indoor applicationsrequires position information. The previously mentioned methods for positionfinding (mobile cell, GPS) are not usable for these indoorapplications.

Within this paper we will present a system that relies on the simultaneousmeasurement of doppler signals at four different positions to obtain positionand velocity of an unknown object. It is therefore suiteable for indoor usage,extendig already existing wireless infrastructure.

[学科分类] 电子、光学、磁材料