초록 ▼

In an alternate embodiment, a signal generator generates navigation and positions information signals of a multiplicity of broadcast beacons. The information signals are separated into parcels corresponding to individual beacons and then are separately broadcast from each of all array of antennae lo

In an alternate embodiment, a signal generator generates navigation and positions information signals of a multiplicity of broadcast beacons. The information signals are separated into parcels corresponding to individual beacons and then are separately broadcast from each of all array of antennae located at fixed, known locations within a building. A radio position and navigation receiver equipped with a processor provided with appropriate software receives the signals and provides radio position and navigation receiver information to the user of the GPS receiver. In another alternative embodiment, plural pseudolites are placed at accurately established fixed locations within a building. A controller causes the pseudolites to sequentially broadcast global navigational satellite system signals. A GPS receiver equipped with a processor provided with appropriate software receives the signals and provides navigation and positioning information to the user of the GPS receiver. Alternative methods for sequencing the signals broadcast by the pseudolites are also disclosed.

대표청구항 ▼

[What is claimed is:] [1.]a first antenna for receiving said navigational signals from said satellites,a receiver/processor coupled to said first antenna,said receiver/processor calculating location and navigation information from said navigational signals,a signal identifier coupled to the first an

[What is claimed is:] [1.]a first antenna for receiving said navigational signals from said satellites,a receiver/processor coupled to said first antenna,said receiver/processor calculating location and navigation information from said navigational signals,a signal identifier coupled to the first antenna,said signal identifier identifying said navigational signals received by said first antenna and separating said navigational signals received by said first antenna into a multiplicity of separate data signals, each of said separate data signals identical to one of said distinct navigational signals transmitted by said plurality of satellites,a plurality of broadcast antennae disposed within said line-of-sight barrier at fixed, predetermined locations,each of said broadcast antennae coupled to said signal identifier to receive one of said separate data signals,each of said separate data signals broadcast by one of said individual broadcast antennae distinct from said other of said data signals transmitted by said other of said individual broadcast antennae,said signal identifier causing each of said broadcast antennae to broadcast said identified navigational signals in a manner distinguishable from the broadcast of said identified navigational signals by the other of said broadcast antennae,a first computer coupled to said GPS receiver to receive said separate data signals received by said GPS receiver,said first computer coupled to said receiver/processor to receive location and navigation information therefrom,said first computer programmed to calculate a navigational result from each of said identified signals received by said GPS receiver and from said location and navigation information from said receiver/processor.