Advanced LPI (Low-Probability-of-Intercept) Intercept Detector Research
Abstract
This report constitutes the first phase of research conducted by Axiomatix wherein our aim was to derive, evaluate and compare various detector structures whose purpose is to intercept a spread-spectrum communication transmitter. The transmitter under surveillance employs a variety of modulation/spreading/transmission techniques which are invariably assumed to emit the message-bearing signal in deep background noise or interference. Thus, the challenging task of the intercepting detector is to reveal as best he can any transmission of the unfriendly spread waveform in the presence of a strongly obscuring noisy environment. The detectability of the primary candidates for low-probability-of-intercept waveforms, such as direct-sequence, frequency-hopping, time-hopping and their hybrids, is customarily related to two factors: (1) performance level of the interceptor's detector whose only function is to monitor the communicated messages and, (2) amount of signal processing (i.e., complexity) associated with such performance. Thus, the exploitability of a spread-spectrum waveform is measured in terms of the complexity required of the interceptor's receiver, so that it can perform such surveillance, as well as in terms of the level of its power spectral density and the resulting probability of intercept.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 26, 1984
- Accession Number
- ADA145981
Entities
People
- Andreas Polydoros
- J. K. Holmes
- K. T. Woo