TESTING OF IONOSPHERIC ABSORPTION MEASUREMENT EQUIPMENT AND STUDY OF IMPROVED TECHNIQUES FOR DATA COLLECTION

摘要

A transistorized Riometer Mark II absorption measuring equipment, as developed under contract AF 19(604)-8442, was tested at the Central Radio Propagation -Laboratory, National Bureau of Standards, Boulder, Colorado, with entirely satisfactory results. Studies were conducted and techniques developed to provide automatic calibration and digital output capability to the Riometer Mark II. A prototype automatic calibrator was built and satisfactorily operated. The requirements and techniques of digital data conversion and recording were investigated, and a suitable system is described. A study was made of antenna systems suitable for use in absorption measurements with riometers. A number of antennas were fabricated and tested. The results are discussed, and the type of antenna which has proven most useful is described.