Measuring of main characteristics of phase-array antenna for Doppler velocity sensor of aeronautical application

The results of modeling and measuring of the main characteristics of the phase-array antenna to be used in Doppler velocity sensor of aeronautical application are considered in the article. The measuring equipment is an automated measuring and computing complex wide-spread in the past years. The aim is to consider the theoretical and practical features of the method of measuring antenna characteristics as well as to define the theoretical approach to development of the algorithm of processing the antenna signals in the near-field region in the frequency domain. The technical result is increase of accuracy and reduction of the time of defining the phase-array antennas diagram. The use of the method of the near-field region in the frequency domain to define the antenna characteristics is one of the most suitable methods for the phase-array antennas. This method can be used for defining with the high accuracy the parameters, which can be defined by the traditional and other methods of antenna measurements. The near-field region method allows performing measurement using only small area or anechoic chamber. The described method makes it possible to perform in full volume the measurement of the characteristics of the antennas that perform the function of both receipt and transfer, to confirm DVS requirements.