US5708440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pseudolite translator for unlicensed frequencies
Assignee: Trimble Inc
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Filing: 1996-06-06
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Granted: 1998-01-13
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Expires: 2016-06-06
Abstract
Abstract A pseudolite translator apparatus and method for using a pseudolite translator. In one embodiment, a pseudolite translator includes a receiver which is adapted to receive position information having a first frequency. The position information is transmitted from a pseudolite. In the present embodiment, the first frequency at which the position information is transmitted from the pseudolite is an unlicensed frequency. A frequency converting processor of the translator converts the position information having the first unlicensed frequency to position information having a second frequency. The translator also contains an output unit which is coupled to the frequency converting processor. The output unit is adapted to communicate the position information having the second frequency to a position determining device.
Inventors
- 👤 Charles R. Trimble
- 👤 Arthur N. Woo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:04
CPC Classifications
G; G01; G01S; G01S19/00; G01S19/01; G01S19/03; G01S19/10; G01S19/11; G01S19/07; G01S19/071; G01S19/38; G01S19/39; G01S19/42; G01S19/45; G01S19/46
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
78 words
A pseudolite translator comprising: a receiver adapted to receive position information having a first frequency, said position information transmitted from a pseudolite; a frequency converting processor for converting said position information having said first frequency to position information having a second frequency, said frequency converting processor coupled to said receiver; and an output unit coupled to said frequency converting processor, said output unit adapted to communicate said position information of said second frequency to a position determining device.
Claim 2
Dependent Claim
78 words
A pseudolite translator comprising: a receiver adapted to receive position information having a first frequency, said position information transmitted from a pseudolite; a frequency converting processor for converting said position information having said first frequency to position information having a second frequency, said frequency converting processor coupled to said receiver; and an output unit coupled to said frequency converting processor, said output unit adapted to communicate said position information of said second frequency to a position determining device.
Claim 3
Dependent Claim
18 words
The pseudolite translator of claim 1 wherein said first frequency of said position information is an unlicensed frequency.
Claim 4
Dependent Claim
33 words
The pseudolite translator of claim 2 wherein said unlicensed first frequency of said position information is selected from the group of frequencies consisting of 902-928 MHz, 2400-2483.5 MHz, 5725-5875 MHz, and 24.0-24.5 GHz.
Claim 5
Dependent Claim
17 words
The pseudolite translator of claim 1 wherein said second frequency of said position information is 1575.42 MHz.
Claim 6
Dependent Claim
17 words
The pseudolite translator of claim 1 wherein said second frequency of said position information is 1227.6 MHz.
Claim 7
Dependent Claim
16 words
The pseudolite translator of claim 1 wherein said position determining device is a conventional GPS receiver.
Claim 8
Dependent Claim
143 words
A translator for communicating with a pseudolite, said translator comprising: a receiver adapted to receive position information from a pseudolite, said position information received from said pseudolite at a frequency selected from the group of frequencies consisting of 902-928 MHz, 2400-2483.5 MHz, 5725-5875 MHz, and 24.0-24.5 GHz; a frequency converting processor for converting said position information having said frequency selected from the group of frequencies consisting of 902-928 MHz, 2400-2483.5 MHz, 5725-5875 MHz, and 24.0-24.5 GHz, to position information having a frequency selected from the group of frequencies consisting of 1575.42 MHz and 1227.6 MHz, said frequency converting processor coupled to said receiver; and an output unit coupled to said frequency converting processor, said output unit adapted to communicate said position information of said frequency selected from the group of frequencies consisting of 1575.42 MHz and 1227.6 MHz to a conventional GPS receiver.
Claim 9
Dependent Claim
143 words
A translator for communicating with a pseudolite, said translator comprising: a receiver adapted to receive position information from a pseudolite, said position information received from said pseudolite at a frequency selected from the group of frequencies consisting of 902-928 MHz, 2400-2483.5 MHz, 5725-5875 MHz, and 24.0-24.5 GHz; a frequency converting processor for converting said position information having said frequency selected from the group of frequencies consisting of 902-928 MHz, 2400-2483.5 MHz, 5725-5875 MHz, and 24.0-24.5 GHz, to position information having a frequency selected from the group of frequencies consisting of 1575.42 MHz and 1227.6 MHz, said frequency converting processor coupled to said receiver; and an output unit coupled to said frequency converting processor, said output unit adapted to communicate said position information of said frequency selected from the group of frequencies consisting of 1575.42 MHz and 1227.6 MHz to a conventional GPS receiver.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-01-12 | 2001-07-14 | 2002-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-01-12 | 2005-07-14 | 2006-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-01-12 | 2009-07-14 | 2010-01-13 | $7700.00 | Window Closed / Lapsed |