Analysis of Pulsed Interference to Amplitude Modulated Receivers. Volume I
Abstract
This report documents two general methods for evaluating the performance degradation of amplitude modulated (AM) receivers subjected to pulsed interference. The first method involves a time waveform receiver simulation model that provides detailed theoretical solutions for a range of pulse parameters. The second method uses a combination of measured data and engineering trends which cover a reasonably complete range of pulse parameters. The predominant cause of performance degradation to AM receivers is the energy of the pulse spectrum within the receivers' bandpass. For rectangular pulses with duty cycles less than 8%, the pulsed interference does not appreciably lower the average voice intelligibility in terms of Articulation Score (AS). The performance degradation is, in general, proportional to the log of the pulse repetition frequency (PRF) and is independent of the pulse width for on-tune pulses wider than the inverse of twice the baseband bandwidth.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1970
- Accession Number
- AD0882109
Entities
People
- R. Hinkle
- R. Mayher
- W. Hatch
Organizations
- IIT Research Institute