Inventor

ESCHENBACH RALPH F

US14 patents

⚠️ This page may combine multiple inventors who share the name “ESCHENBACH RALPH F”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

TRIMBLE NAVIGATION LTD

11 patents

US6181253B1Jan 30, 2001

Differential global positioning system using almanac data for a fast time to first fix

TRIMBLE NAVIGATION LTD61 citations96

US5820080AOct 13, 1998

Precision equivalent landing system using gps and an altimeter

TRIMBLE NAVIGATION LTD85 citations96

US5969670AOct 19, 1999

Inexpensive monitoring technique for achieving high level integrity monitoring for differential GPS

TRIMBLE NAVIGATION LTD75 citations95

US4847862AJul 11, 1989

Global positioning system course acquisition code receiver

TRIMBLE NAVIGATION LTD86 citations94

US6731672B1May 4, 2004

GPS receiver having improved signal acquisition at a low signal to noise ratio

TRIMBLE NAVIGATION LTD23 citations92

US6559793B1May 6, 2003

Differential global positioning system using coarse GPS data for a fast time to a precise first fix

TRIMBLE NAVIGATION LTD37 citations92

US6373429B1Apr 16, 2002

Differential global positioning system using almanac data for a fast time to first fix

TRIMBLE NAVIGATION LTD25 citations92

US4970523ANov 13, 1990

Differential doppler velocity GPS receiver

TRIMBLE NAVIGATION LTD54 citations90

HEWLETT PACKARD CO

2 patents

US4162531AJul 24, 1979

Method and apparatus for programmable and remote numeric control and calibration of electronic instrumentation

HEWLETT PACKARD CO40 citations89

US4099240AJul 4, 1978

Method and apparatus for programmable and remote numeric control and calibration of electronic instrumentation

HEWLETT PACKARD CO25 citations78

(unassigned)

1 patent

US6727848B2Apr 27, 2004

Global positioning system using almanac data for a fast time to first fix

16 citations83

ESCHENBACH RALPH F

TRIMBLE NAVIGATION LTD

Flexible monitoring of location and motion

GPS receiver having a fast time to first fix

GPS receiver having improved signal acquisition at a low signal to noise ratio

Differential global positioning system using almanac data for a fast time to first fix

Precision equivalent landing system using gps and an altimeter

Inexpensive monitoring technique for achieving high level integrity monitoring for differential GPS

Global positioning system course acquisition code receiver

GPS receiver having improved signal acquisition at a low signal to noise ratio

Differential global positioning system using coarse GPS data for a fast time to a precise first fix

Differential global positioning system using almanac data for a fast time to first fix

Differential doppler velocity GPS receiver

HEWLETT PACKARD CO

Method and apparatus for programmable and remote numeric control and calibration of electronic instrumentation

Method and apparatus for programmable and remote numeric control and calibration of electronic instrumentation

(unassigned)

Global positioning system using almanac data for a fast time to first fix