INTERFERENCE SUPPRESSION STUDIES. STUDY OF TECHNIQUES FOR SPECTRUM SIGNATURE MEASUREMENTS.
Final rept., vol. 6,
PENNSYLVANIA UNIV PHILADELPHIA MOORE SCHOOL OF ELECTRICAL ENGINEERING
Pagination or Media Count:
Special features of a spread spectrum communication transceiver GRC-115, a GCA radar ANCPN-4, and the two BMEWS radars ANFPS-49 and -50 are briefly reviewed for the purpose of determining their effects upon spectrum signature testing. It was necessary to specify in more detail how antenna patterns were to be taken, what provision should be made for monopulse systems, what testing with a pulsed interfering signal was necessary i.e. for spread spectrum type receivers, and what consideration should be given to MTI capabilities. Concerning the restrictions placed on the test procedures due to limitations of available test equipment, it was found that what originally appeared as shortcomings of test equipment have to a large extent been overcome by new equipment recently available. This does not mean that presently available equipment completely answers all the measurement problems. For example, signal generators having higher output power would definitely improve measurement accuracy and dynamic range, and possibly reduce measurement time.