Reconfigurable antenna system
First Claim
1. A method for reconfiguring an antenna system of a satellite from a first orbital slot to a second orbital slot, the satellite having a body biasing system, an antenna farm having multiple reflectors of multiple sizes for generating spot and shaped beams, a feed array having varying feed sizes, and a reflector pointing mechanism, said method comprising the steps of:
- body biasing a satellite from a first orbital slot to a second orbital slot using a tracking site for the second orbital slot that is the same as a tracking site used for said first orbital slot; and
gimballing at least one reflector in said antenna system to steer beams to predetermined locations for said second orbital slot.
1 Assignment
0 Petitions
Accused Products
Abstract
A two-step method is used to reconfigure beams among different orbital slots for a satellite system. The satellite is biased at one or more orbital slots for a back-up mission, while it looks at the sub-satellite point for the primary mission. Body steering is achieved using pitch and roll biases. The main reflector of the antenna is gimballed in order to steer the beams to different locations for the back-up mission. Beam size is controlled through the use of different sized reflectors and by varying the feed size. Different sized beams are interleaved among multiple reflectors.
-
Citations
6 Claims
-
1. A method for reconfiguring an antenna system of a satellite from a first orbital slot to a second orbital slot, the satellite having a body biasing system, an antenna farm having multiple reflectors of multiple sizes for generating spot and shaped beams, a feed array having varying feed sizes, and a reflector pointing mechanism, said method comprising the steps of:
-
body biasing a satellite from a first orbital slot to a second orbital slot using a tracking site for the second orbital slot that is the same as a tracking site used for said first orbital slot; and
gimballing at least one reflector in said antenna system to steer beams to predetermined locations for said second orbital slot. - View Dependent Claims (2)
-
-
3. A method for reconfiguring an antenna system of a satellite from a first orbital slot to a second orbital slot, the satellite having a body biasing system, an antenna farm having multiple reflectors or multiple sizes for generating spot and shaped beams, a feed array having varying feed sizes, and a reflector pointing mechanism, said method comprising the steps of:
-
body biasing a satellite from a first orbital slot to a second orbital slot using a tracking site for the second orbital slot that is the same as a tracking site used for said first orbital slot;
gimballing at least one reflector in said antenna system to steer beams to predetermined locations for said second orbital slot; and
adjusting beam size for said predetermined locations by using predeterined reflectors fed by the feed array having varying feed size. - View Dependent Claims (4, 5, 6)
-
Specification