Portable tester for LAAS ground facility
First Claim
1. A portable tester for testing a satellite-based navigation system ground facility, comprising in combination:
- a receiver operable to receive signals from a plurality of satellites and broadcasts from a ground facility; and
a computer operable to determine whether the ground facility is operational by comparing the satellite signals and the broadcasts obtained by the receiver with a test standard.
1 Assignment
0 Petitions
Accused Products
Abstract
A portable tester verifies the operational status of a satellite-based navigation ground facility. The portable tester includes a receiver and a computer. In a preferred embodiment, the receiver obtains Global Position System (GPS) signals from a plurality of satellites and Very High Frequency (VHF) broadcasts from the ground facility. The computer compares the data obtained from the receiver with expected results and determines if the ground facility is operational. If the ground facility is not operating properly, it may not transmit the proper differential corrections and glidepath information to an aircraft. As a result, a pilot may not receive accurate information regarding the aircraft'"'"'s position. This may result in landings that do not closely follow a prescribed glidepath, which could be disastrous. By using the portable tester, the ground facility can be tested to ensure proper data will be sent to the aircraft.
11 Citations
31 Claims
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1. A portable tester for testing a satellite-based navigation system ground facility, comprising in combination:
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a receiver operable to receive signals from a plurality of satellites and broadcasts from a ground facility; and
a computer operable to determine whether the ground facility is operational by comparing the satellite signals and the broadcasts obtained by the receiver with a test standard. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A portable tester for testing a satellite-based navigation system ground facility, comprising in combination:
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a data link operable to receive broadcasts from a ground facility;
a receiver operable to receive data from a plurality of satellites; and
a computer operable to determine whether the ground facility is operational by comparing test signals selected from the group consisting of frequency, data integrity, power, satellites tracked, accuracy, position integrity, and glidepath with a test standard. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A method of testing a satellite-based navigation system ground facility, comprising in combination:
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receiving data from a plurality of satellites;
receiving data from a ground facility;
verifying the ground facility is operational by comparing the data from the plurality of satellites and the ground facility with a test standard. - View Dependent Claims (28, 29, 30, 31)
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Specification