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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 |
| 7330147 |
System and method for ground proximity warning with enhanced obstacle depiction |
Feb. 12, 2008 |
| 7304601 |
Device and a method for accurate radar level gauging |
Dec. 4, 2007 |
| 7295150 |
Methods and systems for identifying high-quality phase angle measurements in an interferometric radar system |
Nov. 13, 2007 |
| 7268723 |
System and method for locating targets using measurements from a space based radar |
Sep. 11, 2007 |
| 7265710 |
Multipath height finding method |
Sep. 4, 2007 |
| 7259713 |
Ranging systems |
Aug. 21, 2007 |
| 7248208 |
Methods and systems for maintaining a position during hovering operations |
Jul. 24, 2007 |
| 7248342 |
Three-dimension imaging lidar |
Jul. 24, 2007 |
| 7239266 |
Radar altimeter |
Jul. 3, 2007 |
| 7239265 |
Method for evaluating and controlling a radar installation |
Jul. 3, 2007 |
| 7218268 |
Self-calibrating interferometric synthetic aperture radar altimeter |
May. 15, 2007 |
| 7205928 |
Automatic weather radar system and method |
Apr. 17, 2007 |
| 7205930 |
Instantaneous 3--D target location resolution utilizing only bistatic range measurement in a multistatic system |
Apr. 17, 2007 |
| 7148837 |
System and method for ground proximity warning with enhanced obstacle depiction |
Dec. 12, 2006 |
| 7145501 |
Methods and systems for measuring terrain height |
Dec. 5, 2006 |
| 7142152 |
Device and method for calibrating and improving the accuracy of barometric altimeters with GPS-derived altitudes |
Nov. 28, 2006 |
| 7138940 |
Method and systems for automatic zero calibration of radar altimeters |
Nov. 21, 2006 |
| 7098841 |
Methods and systems for controlling a height of munition detonation |
Aug. 29, 2006 |
| 7095364 |
Altitude measurement system and associated methods |
Aug. 22, 2006 |
| 7075478 |
Radar altimeter having an automatically calibrated sensitivity range control function |
Jul. 11, 2006 |
| 7064703 |
Methods and apparatus for randomly modulating radar altimeters |
Jun. 20, 2006 |
| 7057549 |
Method and apparatus for predictive altitude display |
Jun. 6, 2006 |
| 7009553 |
Device and method for alert and density altitude features in a transponder |
Mar. 7, 2006 |
| 6992614 |
Radar altimeter |
Jan. 31, 2006 |
| 6980153 |
Radar altimeter for helicopter load carrying operations |
Dec. 27, 2005 |
| 6950056 |
Methods and apparatus for determination of a filter center frequency |
Sep. 27, 2005 |
| 6933879 |
Method and system for localizing a target in an interrogation-response system |
Aug. 23, 2005 |
| 6897804 |
Methods and apparatus for determination of a filter center frequency |
May. 24, 2005 |
| 6897803 |
Radar altimeter with forward ranging capabilities |
May. 24, 2005 |
| 6894640 |
Methods and apparatus for conversion of radar return data |
May. 17, 2005 |
| 6885334 |
Methods and systems for detecting forward obstacles |
Apr. 26, 2005 |
| 6864830 |
Device and method for alert and density altitude features in a transponder |
Mar. 8, 2005 |
| 6812885 |
Radio altimeter test method and apparatus |
Nov. 2, 2004 |
| 6803878 |
Methods and apparatus for terrain correlation |
Oct. 12, 2004 |
| 6792383 |
Passive ranging system and method |
Sep. 14, 2004 |
| 6771207 |
Establishing radar coverage, blockage, and clutter region maps for radar product data based on terrain elevation data |
Aug. 3, 2004 |
| 6753806 |
Methods and apparatus to compensate for zero Doppler returns |
Jun. 22, 2004 |
| 6750807 |
Radar altimeter with forward obstacle avoidance capabilities |
Jun. 15, 2004 |
| 6744397 |
Systems and methods for target location |
Jun. 1, 2004 |
| 6744401 |
Methods and apparatus for radar data processing |
Jun. 1, 2004 |
| 6741203 |
Adaptive radar thresholds system and method |
May. 25, 2004 |
| 6731234 |
Radar anti-fade systems and methods |
May. 4, 2004 |
| 6731236 |
Methods and apparatus for optimizing interferometric radar altimeter cross track accuracy |
May. 4, 2004 |
| 6725153 |
System and a method for navigating a vehicle |
Apr. 20, 2004 |
| 6697012 |
Altitude estimation system and method |
Feb. 24, 2004 |
| 6680691 |
Methods and apparatus for accurate phase detection |
Jan. 20, 2004 |
| 6674397 |
Methods and apparatus for minimum computation phase demodulation |
Jan. 6, 2004 |
| 6628228 |
Ranging system beam steering |
Sep. 30, 2003 |
| 6614383 |
Beam width display method and system |
Sep. 2, 2003 |
| 6614382 |
Beam elevation display method and system |
Sep. 2, 2003 |
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