INSTALLATION ERROR ESTIMATING DEVICE AND INSTALLATION ERROR ESTIMATING METHOD

摘要

The installation error estimating device is capable of enabling error-free high-precision positioning with simple installation. The device has a predicted pattern acquisition unit (an observation point setting unit (110) and a predicted pattern computation unit (120)) which obtains a predicted positioning distribution pattern, which is obtained by computing a characteristic pattern of a predicted positioning distribution obtained by predicting a logical positioning distribution, at each observation point where a wireless tag (300) is installed for positioning; an observation data input unit (130) to which the positioning results obtained from the wireless tags (300) by a tag reader (200) are input as the observation data; a dispersion pattern analysis unit (14 [sic; 140]) which computes a characteristic pattern of a measured positioning distribution, which is obtained by means of statistical analysis of the applicable positioning result, as a measured positioning distribution pattern at each observation point based on the observation data; and an installation error estimating unit (150) which computes the installation error for the tag reader (200) using the predicted positioning distribution patterns obtained and the measured positioning distribution patterns computed.