title: 3D position estimation using a single coil and two magnetic field sensors.
abstract: This paper presents an algorithm which enables the estimation of relative 3D position of a sensor module with two magnetic sensors with respect to a magnetic field source using a single transmitting coil. Starting with the description of the ambiguity problem caused by using a single coil, a system concept comprising two sensors having a fixed spatial relation to each other is introduced which enables the unique determination of the sensors' position in 3D space. For this purpose, an iterative two-step algorithm is presented: In a first step, the data of one sensor is used to limit the number of possible position solutions. In a second step, the spatial relation between the sensors is used to determine the correct sensor position.
authors.forename: P
authors.initials: P
authors.lastname: Tadayon
authors.forename: G
authors.initials: G
authors.lastname: Staude
authors.forename: T
authors.initials: T
authors.lastname: Felderhoff
mesh_terms: D000465:Algorithms; D060526:Magnetic Fields; D060306:Magnetometry / Q000295:instrumentation / Q000379:methods*; D059629:Signal-To-Noise Ratio