Title :
Block floating point for radar data
Author :
Christensen, E.Lintz
Author_Institution :
Dept. of Electromagn. Syst., Tech. Univ., Lyngby, Denmark
fDate :
1/1/1999 12:00:00 AM
Abstract :
Integer, floating point, and block floating point (BFP) data formats are analyzed and compared in order to establish the mathematical tools for selection of an optimal format which fulfils the demands of high resolution radar (SAR) data to large dynamic range and adequate S/N. The analysis takes quantization noise and saturation distortion into account and concludes that it is preferred to use small blocks and a (new) modified BFP format applying fractional exponents. Data from the EMISAR radar system are applied to illustrate the merits of the different schemes
Keywords :
data structures; floating point arithmetic; quantisation (signal); radar computing; radar polarimetry; radar resolution; signal sampling; synthetic aperture radar; ADC; EMISAR radar system; Gaussian distributed data; SAR data; bias removal; block floating point; continuous data representation; data formats; floating point representation; fractional exponents; high resolution radar; integer data representation; large dynamic range; optimal format selection; polarimetric SAR; quantization noise; radar data; saturation distortion; small blocks; 1f noise; Data analysis; Distortion; Dynamic range; Equations; Quantization; Sampling methods; Signal analysis; Silicon compounds; Synthetic aperture radar;
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
