Principles of Modern Radar - Volume 2 1891121537

2.9 References 812.7.4 SummaryWhile matched filters provide the maximum SNR for a given code length, MMFs arecapable of providing substantially lower sidelobes with only a slight increase in SNRloss. MMFs may be designed to minimize ISR, to reduce PSR, and to tailor the sideloberesponse. Extremely low sidelobes are possible, but MMFs are not Doppler tolerant. Asmall fractional Doppler shift quickly degrades sidelobe performance.2.8 FURTHER READINGThe references serve as a good resource for further reading. Stretch processing is coveredin radar and waveform texts [3, 4] and in several SAR texts [5, 6, 40]. Stepped chirpwaveforms are relatively new and are not addressed in most radar texts. The reader isencouraged to start with the papers by Lord and others [7, 8, 10–13]. The initial work inNLFM design performed by Key and others [19–21] is summarized in two excellent texts[26, 50]. Papers by Johnston [24, 25] are also recommended for those interested in theDoppler intolerance associated with NLFM waveforms.Stepped frequency waveforms are presented in a coherent fashion in the textbookby Wehner [18] and in the chapter by Lane [17]. The original paper by Taylor andBlinchikoff [27] provides background on the motivation behind the development of thequadriphase waveform as well as derivations for some of the equations in this text. Levanonand Mozeson [51] describe other band-limiting techniques, in addition to quadriphase,and describe the ambiguity surface for a quadriphase waveform. The various MMF designsare covered at length in [32–35]. Early approaches to MMF design are covered in[52, 53], and more recently an adaptive approach was described in [54].2.9 REFERENCES[1] Keel, B.M., “Fundamentals of Pulse Compression Waveforms,” Chapter 20 in Principles ofModern Radar, Basic Principles, Ed. M. A. Richards, J. A. Scheer, and W. A. Holm, ScitechPublishing, Raleigh, NC, 2010.[2] Caputi, Jr., W.J., “Stretch: A Time-Transformation Technique,” IEEE Trans. AES, vol. AES-7,no. 2, pp. 269–278, March 1971.[3] Skolnik, M., Radar Handbook, 3d ed., McGraw-Hill, New York, 2008.[4] Stimson, G.W., Introduction to Airborne Radar, 2d ed., Scitech Publishing, Raleigh, NC,1998.[5] Jakowatz, Jr., C.V., Wahl, D.E., Eichel, P.H., Ghiglia, D.C., and Thompson, P.A., Spotlight-Mode Synthetic Aperture Radar: A Signal Processing Approach, Kluwer Academic Publishers,Boston, 1996.[6] Curlander, J.C. and McDonough, R.N., Synthetic Aperture Radar, Systems and Signal Processing,New York, John Wiley & Sons, 1991.[7] Nel, W., Tait, J., Lord, R., and Wilkinson, A., “The Use of a Frequency Domain SteppedFrequency Technique to Obtain High Range Resolution on the CSIR X-Band SAR System,”in Proceedings of the IEEE 2002 Africon Conference, vol. 1, pp. 327–332, 2002.