Title:
ANTENNA CHANGEOVER DEVICE FOR SPACECRAFT
Document Type and Number:
Japanese Patent JP2001127676
Kind Code:
A
Abstract:
To solve the problems of a conventional antenna changeover device that there is a risk of channel interruption after changeover and a visual operation load is increased because an operation manager monitors an up-link level and instructs changeover timing mainly on the basis of experiences.
A point of time when the uplink levels of antenna systems are crossing is detected and a changeover command is sent to an antenna having a higher level at the time.
Inventors:
KIRITANI KOTARO
Application Number:
JP30397499A
Publication Date:
May 11, 2001
Filing Date:
October 26, 1999
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
G01S19/02; H04B7/08; H04B7/26; H04W16/28; H04W84/06; (IPC1-7): H04B7/08; G01S5/14; H04B7/26
Attorney, Agent or Firm:
Kaneo Miyata (2 outside)