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This article deals with a noise analysis of inertial sensors, especially with accelerometers. Accelerometers and gyroscopes are inertial sensors which are parts of inertial measurement units IMUs. An inertial navigation uses outputs from three accelerometers and from three gyroscopes to positions, orientations computations. For better accuracy of navigation and guidance systems is necessary to evaluate...
This paper deals with a stability evaluation of a direct detection radiometer based on a model in Matlab Simulink. The model results were compared with a real radiometer output. Based on stability evaluation we try to predict an unstable radiometer output by an easy method. This allows to prolong a time between calibration of the radiometer to reach more precise results during measurement of sensed...
This article deals with Allan variance as useful method for noise performance evaluation of inertial sensors which are used in inertial measurement unit (IMU) and different guidance systems. The noise component of inertial sensors is important part from group of inertial sensors errors, which determines accuracy of inertial navigation systems in real time. Because inertial measurement unit consists...
This paper deals with evaluation and simulation of direct detection radiometer, which operates in the W-frequency band. Radiometers can be used in wide range applications in industry, military and security as well. One of the possible applications where the radiometers can be used is scanning of concealed dangerous objects. Main part of the article deals with the theoretical analysis of the basic...
The antenna is an essential part of many electronic systems. Selecting the best antenna may be very important, but selecting the right antenna can be a difficult task, because of variation in the way manufacturers specify and describe them. This paper introduces a method to measure an antenna gain and antenna factor of small loop antennas. It is well known, that the antenna measurement in an anechoic...
There are several important antenna characteristics that should be considered when choosing an antenna for your application. The directivity and radiation pattern are very important characteristics. Measurement site includes not only electrical, but the mechanical equipment too. One of most important problems is the synchronization of data acquisition with antenna rotation system. The paper describes...
The antenna is an essential part of a test system. In some applications, selecting the best antenna may be very important. Unfortunately, selecting the right antenna can be a difficult task, because of variation in the way manufacturers specify and describe them. This article explains the specific method of the antenna factor (AF) as one of the main antenna parameters definition by measurement in...
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