We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
ROBUST MULTIPLE CHANNEL SCANNING AND DETECTION OF LOW PROBABILITY OF INTERCEPT (LPI) COMMUNICATION SIGNALS.
- Authors
Sha'ameri, Ahmad Zuri; Kanaa, Abdulrahman
- Abstract
In this paper, multiple channel scanning and detection methods for low probability of intercept (LPI) signals in a multisignal environment are proposed. The short-time Fourier transform (STFT) and short-time Goertzel algorithm (STGA) are implemented to obtain the time-frequency (TF) representation. From the TF representation, different moving average (Mavg) lengths are used to detect the presence of the signal and their performance is verified. From the receiver operating characteristics (ROC), it is shown that the detection performance of STFT and STGA are close in terms of probability of detection (Pd) using the constant false alarm (CFAR) theorem at different probability of false alarms. STFT and STGA have Pd=0.9 using Mavg=32 at signal to noise ratio (SNR) of -15 dB and -14 dB respectively. However, STGA has computational complexity (CC) that is 10 times less than STFT. The instantaneous frequency (IF) estimated from the TF representation is able to identify the signals in a multisignal environment at SNR of 5 dB.
- Subjects
LOW probability of intercept radar; RADAR research; REMOTE sensing by radar; FOURIER transforms; FOURIER analysis
- Publication
Defence S&T Technical Bulletin, 2016, Vol 9, Issue 1, p1
- ISSN
1985-6571
- Publication type
Article