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To improve the positioning accuracy in indoor environments, we use the Inertial Navigation System (INS) algorithm to perform the pedestrian tracking, and the measurements consist of two parts: the velocity error and the heading error. The velocity error can be gotten from the navigation result. Meanwhile, we get the heading error in two ways. First, taking the magnetometer as the heading resource,...
The Star Sensor can be used to assist the inertial navigation system (INS) for navigation and positioning, restraining the accumulated error caused by the inertial components. During the integrated navigation process, the Star Sensor is installed above the INS, generated installation errors between the INS body coordinate system and the Star Sensor body coordinate system. In order to increase the...
This paper describes the principle, structure and the self-calibration method of a new type of current comparator which is designed and constructed by NIM. This current comparator is based on “shield guiding structure”, and its ratio is from 0.1∶1 to 1∶1.
This paper introduces a calibration method for measuring the Miniature Current Transformer (MCT) which is based on sampling technology. In this way, we can measure the miniature current transformer with secondary current from 1mA to 100mA and different load accurately.
This paper describes how to using the calibration method to verify a NFC RF Conformance Test Tool without the traditional test case running and script checking to choose a most accurate test tool.
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