Patent ID: 8040279
Filing Date: 2011-10-18
Classification: G01S

Abstract:
1. A position measuring apparatus for measuring a position of an object device for position measurement, the apparatus comprising: a receiving unit that receives a signal transmitted from the object device; a position computing unit that computes a position of the bject device by applying Angle Of Arrival (AOA) and Time Of Arrival (TOA) techniques using the received signal; a medium channel estimating unit that estimates a channel of a medium that the received signal penetrates on a transmission path, using the received signal; a position correcting unit that calculates a delay time caused by the received signal penetrating through the medium using the estimated medium channel, and corrects the computed position of the object device using the calculated delay time; and an incident angle determining unit that scans signals in all directions received from the object device, and determine a receiving direction of a signal received first as an incident angle of an antenna associated with the position measuring apparatus, wherein the position computing unit includes; a detecting unit that detects a time index of an impulse response of a path corresponding to the signal received first, wherein the incident angle determining unit determines, as an incident angle of the antenna, an incident angle of an earliest time index among time indexes for each incident angle outputted from the detecting unit.