Spotlight Synthetic Aperture Radar

Part 1 Introduction: spotlight SAR; SAR modes; importance of spotlight SAR; early SAR chronology. Part 2 Synthetic aperture radar fundamentals: SAR system overview; imaging considerations; pulse compression and range resolution; synthetic aperture technique for Azimuth resolution; SAR coherence requirements; signal phase equation; inverse SAR (ISAR); SAR sensor parametric design. Part 3 Spotlight SAR and polar format algorithm: scope of processing task; polar format overview; polar data storage as a two-dimensional signal; correction for non-planar motion; polar format algorithm limitations; Taylor series expansion procedures; phase of image pixels; image geometric distortion; image focus error equations; displacements and absolute positioning. Part 4 Digital polar format processing: sampling rate conversion; polyphase filters; polar interpolation; image scale factors; image distortion correction; signal history projections; stabilized scene polar interpolation; subpatch processing and mosaicking. Part 5 Phase errors: classification of phase error; management of phase error; magnitude of phase error; requirements on a practical SAR motion sensor; moving target effects. Part 6 Autofocus techniques: mapdrift; multiple aperture mapdrift; phase difference; phase gradient; prominent point processing; considerations for space-variant refocus. Part 7 Processor design examples: the common UNIX SAR processor; the ground to air imaging radar processor. Part 8 SAR system performance: image quality metrics; system performance budgeting; requirements on system impulse response; requirements on system noise; geometric distortion; secondary image quality metrics; test arrays. Part 9 Spotlight processing applications: spotlight processing of scan and stripmap SAR data; interferometric SAR; forward look SAR; vibrating target detection. Part 10 Range migration algorithm: model; algorithm overview; analytical development; discussion; efficient algorithms for range migration processing. Part 11 Chirp scaling algorithm: non-dechirped signal model; algorithm overview; analytical development; discussion. Part 12 Comparison of image formation algorithms: image formation algorithm models; computational complexity; memory requirements; other considerations.