Accession Number : ADA113381

Title :   Application of Self-Organizing Random Arrays to Communication Satellites.

Descriptive Note : Final technical rept. 1 Jul 80-20 Feb 81,


Personal Author(s) : Haber,Fred ; Bar-Ness,Yeheskel ; Steinberg,Bernard D ; Yeh,Paul Chien-Chang ; Herman,Judy

PDF Url : ADA113381

Report Date : Feb 1982

Pagination or Media Count : 122

Abstract : The investigation of adaptive interference cancelling satellite-borne thinned arrays, capable of forming narrow beams in the direction of signal sources was performed. It was determined that an antenna configuration where the elements are placed in the form of a ring would be most appropriate for uniformity of the mainbeam pattern and for good beamwidth characteristics. However, satellite orientation and ground location uncertainty limit the pointing accuracy. Therefore, utilization of adaption algorithms which are able to work through these errors is required. It was concluded that by using this approach, the required performance can be achieved. (Author)

Descriptors :   *Spacecraft antennas, *Antenna configurations, *Beam forming, Narrow beams(Radiation), Antenna arrays, Electromagnetic interference, Self organizing systems, Cancellation, Aiming, Spatial filtering, Algorithms, Communication satellites, Spread spectrum, Frequency agility, Pseudo noise systems

Subject Categories : Radiofrequency Wave Propagation
      Unmanned Spacecraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE