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The objective of this paper is to outline test procedures, test set-up, and antenna measurements collected on a multi-element adaptive antenna processor. The elements used are UHF blade antennas located on a pedestal mounted A-10 aircraft at the RADC Newport Test Range. The measurement data to be presented will include basic element, and adaptively weighted element patterns. Methods of interpreting system performance and problems in collecting the data will also be provided.
Methods of remotely controlling source transmitters and antennas over long distances is described. The remote range controller instrumentation currently available is limited to a 5.5 mile separation, over voice grade telephone lines. Unfortunately the phone line routes are not line of sight. In fact, the most direct route available for source control over dedicated phone lines at the Westinghouse antenna range complex is 13 miles in length. We wanted to utilize the Scientific Atlanta Model 4580 Remote Range Controller since it is fully compatible with out existing signal sources, programmable receivers and positioner controls. However, the data set available with the Model 4580 is limited to 5.5 miles separation between the master control unit and the remote control unit. The data set requires four wires or two dedicated phone lines. Transfer speed is 0-9600 bits per second asynchronous. The solution to overcome the 5.5 mile limitation and permit full use of the Model 4580 capabilities is described. Lightning protection and alternate control methods using tone controls over phone lines and method of employing a microwave link is discussed.
This paper discusses some of the more unique problems involved in the performance of measurements on a ground plane type of antenna range generally required for the study and design of multiple antenna shipboard systems. The discussion concentrates on the installation and use of a computer automated antenna analyzer system on this type of range. The methods and results of various range calibration measurements are presented with emphasis on the use of the system’s computerized capability to perform measurements, analyze data, and produce various graphic output formats. The test results obtained from a pair of monopole antennas mounted on a simplified model ship hull are also presented and discussed.