Signal-to-interference-plus- noise-ratio analysis for constrained radar waveforms

• Published in: IEEE transactions on aerospace and electronic systems Vol. 52; no. 5; pp. 2230 - 2241
• Main Authors: Jones, Aaron M., Rigling, Brian, Rangaswamy, Muralidhar
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.10.2016; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Adaptation models; Adaptive systems; Data models; Degradation; Energy transmission; Environment models; Interference; Noise; Peak to average power ratio; Radar; Signal to noise ratio; Waveforms
• ISSN: 0018-9251; 1557-9603
• DOI: 10.1109/TAES.2016.150511

To fully appreciate the benefits of arbitrary waveform design capability for transmit adaptive systems, the trade space between constraints (employed to increase the measure of practicality for radar) and the usual performance driver (signal-to-interference-plus-noise ratio) needs to be better defined and understood.We address this issue by developing performance models for radar waveforms with cumulative-modulus and energy constraints. Radar waveforms typically require a constant-modulus (constant-amplitude) transmit signal to efficiently exploit the available transmit power. However, recent hardware advances and the capability for arbitrary (phase and amplitude) designed waveforms have forced a reexamination of this assumption in order to quantify the impact of the nonconstant modulus property.We develop performance models for the signal-to-interference-plus-noise ratio as a function of the cumulative modulus for a random colored interference environment and validate the models against measured data.