Title :
Walsh function generator using a field programmable gate array [for ESTAR]
Author :
Chren, William A., Jr.
Author_Institution :
Grand Valley State Univ., Grand Rapids, MI, USA
Abstract :
A prototype Walsh Function Generator (WFG) for a NASA satellite called the ESTAR (Electronically Scanned Thinned Array Radiometer) has been designed and tested. Implemented in a single Xilinx XC3020PC68-50 Field Programmable Gate Array (FPGA), it generates a user-programmable set of 32 consecutive Walsh functions. These functions are used for noise cancellation in analog signal processing circuitry associated with each of the 124 dipole antennas that make up the array
Keywords :
Walsh functions; aerospace instrumentation; array signal processing; dipole antenna arrays; field programmable gate arrays; function generators; interference suppression; microwave antenna arrays; microwave measurement; programmable logic arrays; radiometers; radiometry; satellite antennas; ESTAR; L-band; NASA satellite; Walsh function generator; analog signal processing circuitry; dipole antennas; electronically scanned thinned array radiometer; field programmable gate array; noise cancellation; passive synthetic aperture radiometer satellite; user-programmable set; Circuit testing; Electronic equipment testing; Field programmable analog arrays; Field programmable gate arrays; NASA; Noise cancellation; Prototypes; Radiometry; Satellite broadcasting; Signal generators;
Conference_Titel :
ASIC Conference and Exhibit, 1993. Proceedings., Sixth Annual IEEE International
Conference_Location :
Rochester, NY
Print_ISBN :
0-7803-1375-5
DOI :
10.1109/ASIC.1993.410734
