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- Title
DEVELOPMENT OF A PULSE REPETITION INTERVAL (PRI) MODULATION TEMPLATE USING WALSH- HADAMARD TRANSFORM (WHT).
- Authors
Ghani, Kamaruddin Abdul; Dimyati, Kaharudin; Sha'ameri, Ahmad Zuri
- Abstract
The classification of pulse repetition interval (PRI) modulation types using transformation techniques has some disadvantages, whereby PRIs can be misclassified. In this study, classification of PRI modulation types is done using the power spectrum of the Walsh-Hadamard transform (WHT). The generated spectrums are downsampled to reduce sampling errors and sub-harmonics, resulting in decimated Walsh-Hadamard transform (DWHT) spectrums. A template of DWHT spectrums is developed for the most common PRI modulation types, which are; constant, jittered and staggered. In this template, each pulse sequence is given a unique DWHT spectrum as its identity. The template can be used as rule-based classifier for accurate identification of signals.
- Subjects
PULSE amplitude modulation; ELECTRONIC pulse techniques; HADAMARD matrices; HADAMARD codes; MODULATION spectroscopy; ELECTRONIC modulation
- Publication
Defence S&T Technical Bulletin, 2015, Vol 8, Issue 1, p42
- ISSN
1985-6571
- Publication type
Article