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Class Information
Number: 342/120
Name: Communications: directive radio wave systems and devices (e.g., radar, radio navigation) > Determining distance > Altimeter
Description: Subject matter including determining the distance an aircraft to the earth"s surface from the aircraft.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6614382 |
Beam elevation display method and system |
Sep. 2, 2003 |
| 6593875 |
Site-specific doppler navigation system for back-up and verification of GPS |
Jul. 15, 2003 |
| 6492934 |
Method of deriving ground speed for descending aircraft |
Dec. 10, 2002 |
| 6486826 |
Arrangement for the precise distance measuring, in particular the filling level measuring |
Nov. 26, 2002 |
| 6476759 |
Method for the calibration of an FM/CW type radio altimeter, and radio altimeter designed for the implementation of this method |
Nov. 5, 2002 |
| 6462703 |
Method and system for high precision altitude measurement over hostile terrain |
Oct. 8, 2002 |
| 6434485 |
GPS device with compass and altimeter and method for displaying navigation information |
Aug. 13, 2002 |
| 6426717 |
Single antenna FM radio altimeter operating in a continuous wave mode and an interrupted continuous wave mode |
Jul. 30, 2002 |
| 6407697 |
Low probability of intercept coherent radar altimeter |
Jun. 18, 2002 |
| 6397142 |
Tertiary operation for repairing irregularities |
May. 28, 2002 |
| 6384770 |
Linearizing device for a frequency-modulation ramp and its application to a radio altimeter |
May. 7, 2002 |
| 6380886 |
Consistent combination of altimeter data from multiple satellites |
Apr. 30, 2002 |
| 6381540 |
GPS device with compass and altimeter and method for displaying navigation information |
Apr. 30, 2002 |
| 6362776 |
Precision radar altimeter with terrain feature coordinate location capability |
Mar. 26, 2002 |
| 6347286 |
Method and device operating by interpolation in a discrete spectrum to determine characteristics of a signal and application thereof |
Feb. 12, 2002 |
| 6281832 |
Method and apparatus for using statistical data processing in altimeter and terrain awareness integrity monitoring systems |
Aug. 28, 2001 |
| 6278397 |
Quiet radar method and apparatus |
Aug. 21, 2001 |
| 6255984 |
Sensor system |
Jul. 3, 2001 |
| 6222487 |
System and method for measurement |
Apr. 24, 2001 |
| 6211812 |
Quiet radar method and apparatus |
Apr. 3, 2001 |
| 6204805 |
Dual target tracking altimeter |
Mar. 20, 2001 |
| 6188348 |
Radar ice sounder with parallel doppler processing |
Feb. 13, 2001 |
| 6157891 |
Positioning and ground proximity warning method and system thereof for vehicle |
Dec. 5, 2000 |
| 6137438 |
Precision short-range pulse-echo systems with automatic pulse detectors |
Oct. 24, 2000 |
| 6130636 |
Continuous wave radar system |
Oct. 10, 2000 |
| 6014404 |
Procedure for the independent reduction of acquisition thresholds and tracking of spread spectrum codes received in orbit |
Jan. 11, 2000 |
| 6008754 |
On-ground radio altimeter calibration system |
Dec. 28, 1999 |
| H1806 |
Variable radar altimeter test apparatus |
Oct. 5, 1999 |
| 5923283 |
Altimetric type measurement method for use on a satellite |
Jul. 13, 1999 |
| 5898401 |
Continuous wave radar altimeter |
Apr. 27, 1999 |
| 5867119 |
Precision height measuring device |
Feb. 2, 1999 |
| 5850197 |
Attitude determination using fewer than three antennas |
Dec. 15, 1998 |
| 5781148 |
Continuous wave radar altimeter |
Jul. 14, 1998 |
| 5736957 |
Delay compensated doppler radar altimeter |
Apr. 7, 1998 |
| 5734346 |
Method of an apparatus for detecting the displacement of a target |
Mar. 31, 1998 |
| 5731782 |
Ranging systems |
Mar. 24, 1998 |
| 5719582 |
Software/hardware digital signal processing (DSP) altimeter |
Feb. 17, 1998 |
| 5719581 |
Low-cost radio altimeter |
Feb. 17, 1998 |
| 5652592 |
Radio location with enhanced Z-axis determination |
Jul. 29, 1997 |
| 5546087 |
Altimetry method |
Aug. 13, 1996 |
| 5532698 |
Transponder squawk calibration |
Jul. 2, 1996 |
| 5477226 |
Low cost radar altimeter with accuracy enhancement |
Dec. 19, 1995 |
| 5442360 |
Echo distance-measuring system with calibration apparatus |
Aug. 15, 1995 |
| 5410317 |
Terrain clearance generator |
Apr. 25, 1995 |
| 5345241 |
Self-contained method for correction of an inertial system over a body of water |
Sep. 6, 1994 |
| 5160933 |
Radar altimeter with self-calibration feature |
Nov. 3, 1992 |
| 5150125 |
High Doppler rate, high altitude capability coherent pulse Doppler radar altimeter |
Sep. 22, 1992 |
| 5109230 |
Method for aircraft velocity error detection with a Doppler radar |
Apr. 28, 1992 |
| 5047779 |
Aircraft radar altimeter with multiple target tracking capability |
Sep. 10, 1991 |
| 4959654 |
Digitally generated two carrier phase coded signal source |
Sep. 25, 1990 |
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