Title :
CAD for HERMES antennas
Author :
Lenormand, R. ; Blanchard, I. ; Clair, D. ; Tourneur, J. ; Bannelier, P. ; Brochard, C. ; Martinaud, J.P.
Author_Institution :
Alcatel Space, Toulouse, France
Abstract :
During the launch, landing and orbit phases of the proposed HERMES spacecraft, telecommand data (10 kb/s) and telemetry data (25 kb/s) are transmitted between HERMES and the ground by a relay satellite. An analysis of operational requirements resulted in the selection of four switched antennas, integrated within the plane structure, each of which may comprise several antennas. The two software packages used assess the performance of these antennas are briefly reviewed. The first package is for implementing the boundary element method (BEM). The program is executed on a DEC VAX 8600 and the linear system, whose matrix is complex, symmetrical and complete, is solved on an array processor, FPS 164/MAX. The electromagnetic characteristics (radiation patterns, surface currents, etc.) of the antenna are displayed graphically. The other package, SARGASSES, is an interactive simulator for antennas on structures such as aircraft or spacecraft.<>
Keywords :
CAD; artificial satellites; boundary-value problems; satellite antennas; satellite relay systems; telecommunications computing; 10 kbit/s; 25 kbit/s; DEC VAX 8600; FPS 164/MAX; HERMES antennas; HERMES spacecraft; SARGASSES; aircraft; array processor; boundary element method; electromagnetic characteristics; interactive simulator; linear system; radiation patterns; relay satellite; software packages; spacecraft; surface currents; switched antennas; telecommand data; telemetry data; Artificial satellites; Boundary element methods; Linear systems; Packaging; Relays; Software packages; Space vehicles; Symmetric matrices; Telecommunication switching; Telemetry;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1988. AP-S. Digest
Conference_Location :
Syracuse, NY, USA
DOI :
10.1109/APS.1988.93980
