Articles | Volume 5
Adv. Radio Sci., 5, 153–156, 2007
https://doi.org/10.5194/ars-5-153-2007
Adv. Radio Sci., 5, 153–156, 2007
https://doi.org/10.5194/ars-5-153-2007

  12 Jun 2007

12 Jun 2007

Position finding using simple Doppler sensors

S. Schelkshorn and J. Detlefsen S. Schelkshorn and J. Detlefsen
  • Technische Universität München, Lehrstuhl für Hochfrequenztechnik, Fachgebiet Hochfrequente Felder und Schaltungen, 80333 München, Germany

Abstract. An increasing number of modern applications and services is based on the knowledge of the users actual position. Depending on the application a rough position estimate is sufficient, e. g. services in cellular networks that use the 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 applications requires position information. The previously mentioned methods for position finding (mobile cell, GPS) are not usable for these indoor applications.

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