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Class Information
Number: 342/121
Name: Communications: directive radio wave systems and devices (e.g., radar, radio navigation) > Determining distance > Altimeter > With additional indicator
Description: Subject matter including means to display information in addition to altitude.










Patents under this class:

Patent Number Title Of Patent Date Issued
8659471 Systems and methods for generating aircraft height data and employing such height data to validate altitude data Feb. 25, 2014
8643533 Altitude sensor system Feb. 4, 2014
8558731 System for and method of sequential lobing using less than full aperture antenna techniques Oct. 15, 2013
8332137 Navigation system with dynamically calibrated pressure sensor Dec. 11, 2012
8275495 Method and device for monitoring the ability to navigate of an aircraft during a phase of flight close to the ground Sep. 25, 2012
7969350 Method and system for reducing a leakage component of a received radar signal Jun. 28, 2011
RE42316 Systems and methods for self-test of a radar altimeter May. 3, 2011
7839321 Radar cable detection system Nov. 23, 2010
7633430 Terrain awareness system with false alert suppression Dec. 15, 2009
7576684 Integrated attitude altimeter Aug. 18, 2009
7446697 Method and system for calibrating radar altimeters Nov. 4, 2008
7409293 Methods and systems for enhancing accuracy of terrain aided navigation systems Aug. 5, 2008
7295150 Methods and systems for identifying high-quality phase angle measurements in an interferometric radar system Nov. 13, 2007
7295151 Systems and methods for self-test of a radar altimeter Nov. 13, 2007
7248208 Methods and systems for maintaining a position during hovering operations Jul. 24, 2007
7248342 Three-dimension imaging lidar Jul. 24, 2007
7161527 Navigation system Jan. 9, 2007
7138940 Method and systems for automatic zero calibration of radar altimeters Nov. 21, 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
6885334 Methods and systems for detecting forward obstacles Apr. 26, 2005
6750807 Radar altimeter with forward obstacle avoidance capabilities Jun. 15, 2004
6731236 Methods and apparatus for optimizing interferometric radar altimeter cross track accuracy May. 4, 2004
6593875 Site-specific doppler navigation system for back-up and verification of GPS Jul. 15, 2003
6362776 Precision radar altimeter with terrain feature coordinate location capability Mar. 26, 2002
6204779 Combined altitude and height-above-ground indicator for an aircraft Mar. 20, 2001
5923283 Altimetric type measurement method for use on a satellite Jul. 13, 1999
5736957 Delay compensated doppler radar altimeter Apr. 7, 1998
5719582 Software/hardware digital signal processing (DSP) altimeter Feb. 17, 1998
5410317 Terrain clearance generator Apr. 25, 1995
5136301 Primary flight display system having a vertical linear altimeter Aug. 4, 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
4894659 Radar altimeter systems Jan. 16, 1990
4174520 Radar altimeter for tropical areas Nov. 13, 1979











 
 
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