Metrics to Define Probability of Interception of Conventional, Frequency-hopping, Spread Spectrum Radars

Abstract

Low probability of interception (LPI) is an important characteristic, especially for military radars. Manufacturers boast of the LPI performance of their radar but in the absence of a quantifiable metric, there is no method to compare the LPI characteristics of different radars. This paper proposes a novel method of defining metrics for the probability of interception (PI) of conventional, frequency hopping and Spread Spectrum radars. The PI of conventional radar depends on Azimuth beam width, pulse repetition frequency (PRF) and pulse width. The PI of frequency hopping radar is defined in terms of the bandwidth of transmission in each hop and the band of operation. The PI of spread spectrum radar is evaluated by comparing power spectral density (PSD) of the transmitted waveform with that of a random binary wave of similar time period.

Keywords:

• Low probability of interception
• Probability of interception
• Spread spectrum radar

Additional information

Notes on contributors

Sanjay Rajgopal

Sanjay Rajgopal received BE in Electronics and Telecomn Engg from Govt Engg College, Jabalpur, India in 1989 and M Tech in Comn Systems from IIT Madras, India in 1999. He also received MSc degree from Madras University, India and a Masters Diploma in Business Administration from Symbiosis, Pune, India. He is also a Fellow of IETE. He has an experience of over 20 years in Surveillance Radars. His fields of interest include Digital Communication, Radar and Spread Spectrum applications. He is presently pursuing his Ph D from NIT Kurukshetra, India. E-mail: [email protected]

O. P. Sahu

O. P. Sahu received his B.E. degree in 1989 and M.Tech degree in 1991 both in Electronics and Communication Engineering from Rani Durgavati Vishvavidyalaya Jabalpur and Kurukshetra University Kurukshetra respectively. He received his PhD degree in 2005 from Kurukshetra University Kurukshetra in the area of Multirate Filter Banks. He joined NIT (then REC) Kurukshetra as a Lecturer in 1991 in the department of Electronics and Communication Engineering and was promoted as an Assistant Professor in 1999 and is still working there. He has more than 25 papers in his credit in National and International Conferences and Journals. His Research interests include Signals and Systems, Digital Signal Processing, Digital Communication and Fuzzy Systems. E-mail: [email protected]