INDOOR SATELLITE NAVIGATION SYSTEM
First Claim
1. A navigation system for an enclosed area, the navigation system comprising:
- a) at least one satellite signal receiving station, positioned outside the enclosed area, to receive satellite signals transmitted by a constellation of satellites and to determine time synchronization information relative to the transmitted signals;
b) at least one local transmitting station, positioned within the enclosed area, to transmit a local signal compatible with the transmitted satellite signals; and
c) a communication channel to communicate self-alignment information between each station and at least one other station;
wherein each local transmitting station uses the self-alignment information to generate the local signal;
and wherein the at least one local signal provides navigation information useable by a satellite navigation receiver.
1 Assignment
0 Petitions
Accused Products
Abstract
A navigation system for an enclosed area, the navigation system comprising: a) at least one satellite signal receiving station, positioned outside the enclosed area, to receive satellite signals transmitted by a constellation of satellites and to determine time synchronization information relative to the transmitted signals; b) at least one local transmitting station, positioned within the enclosed area, to transmit a local signal compatible with the transmitted satellite signals; and c) a communication channel to communicate self-alignment information between each station and at least one other station; wherein each local transmitting station uses the self-alignment information to generate the local signal; and wherein the at least one local signal provides navigation information useable by a satellite navigation receiver.
27 Citations
18 Claims
-
1. A navigation system for an enclosed area, the navigation system comprising:
-
a) at least one satellite signal receiving station, positioned outside the enclosed area, to receive satellite signals transmitted by a constellation of satellites and to determine time synchronization information relative to the transmitted signals; b) at least one local transmitting station, positioned within the enclosed area, to transmit a local signal compatible with the transmitted satellite signals; and c) a communication channel to communicate self-alignment information between each station and at least one other station; wherein each local transmitting station uses the self-alignment information to generate the local signal; and wherein the at least one local signal provides navigation information useable by a satellite navigation receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
-
16. A method of providing satellite signal information in an enclosed area, the method comprising:
-
a) deploying a plurality of local transmitters in the enclosed area; and b) transmitting local signals compatible with transmitted satellite signals; wherein the local signals provide navigation information useable by a satellite navigation receiver. - View Dependent Claims (17, 18)
-
Specification