• Citations Per Year
Learn More
This paper presents an improved polar format algorithm (PFA) for geosynchronous synthetic aperture radar which undergoes a near-circular track (GeoCSAR). GeoCSAR imaging geometry and signal formulation considering orbit perturbations were derived to ensure accurate slant range between antenna and targets. The illuminated area is more than one million square(More)
Geosynchronous Circular Synthetic Aperture Radar (GeoCSAR) has the Circular SAR configuration and undergoes a nearellipse geosynchronous track rather a “8”-like track of conventional GeoSAR. It could produce three dimensional (3-D) images of extended Earth scenes. GeoCSAR raw data simulator is of vital for predicting system performance, developing suitable(More)
The purpose of this paper is to investigate a new assembly method for hard disk drives, i.e. by shape memory alloys. There are two particular applications of our current interest. One is the assembly of the spindle with record medium and the other is the assembly of the driving arm with read/write head. We discuss the main issues in the design of assembly(More)
  • 1