| |
 |
|
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 |
| 4958161 |
Frequency-modulated continuous-wave radar altimeter system |
Sep. 18, 1990 |
| 4851852 |
Decorrelation tolerant coherent radar altimeter |
Jul. 25, 1989 |
| 4828382 |
Passive radio altimeter |
May. 9, 1989 |
| H628 |
Universal automatic landing system for remote piloted vehicles |
Apr. 4, 1989 |
| 4816834 |
Pulse synchronizing apparatus |
Mar. 28, 1989 |
| 4806935 |
Closed loop velocity/altitude sensor for FM-CW doppler radars |
Feb. 21, 1989 |
| 4758839 |
Terrain profile radar system |
Jul. 19, 1988 |
| 4706092 |
Arrangement for measuring velocity with respect to a surface |
Nov. 10, 1987 |
| 4698635 |
Radar guidance system |
Oct. 6, 1987 |
| 4695013 |
Landing aid |
Sep. 22, 1987 |
| 4595925 |
Altitude determining radar using multipath discrimination |
Jun. 17, 1986 |
| 4581612 |
Display with matrix array of elements |
Apr. 8, 1986 |
| 4431994 |
Combined radar/barometric altimeter |
Feb. 14, 1984 |
| 4429310 |
Random binary waveform encoded ranging apparatus |
Jan. 31, 1984 |
| 4357610 |
Waveform encoded altitude sensor |
Nov. 2, 1982 |
| 4325138 |
Continuous wave adaptive signal processor system |
Apr. 13, 1982 |
| 4320397 |
Echo tracker/range finder for radars and sonars |
Mar. 16, 1982 |
| 4250505 |
Independent landing monitor |
Feb. 10, 1981 |
| 4241346 |
Pulse radar altimeters |
Dec. 23, 1980 |
| 4179694 |
Frequency control systems |
Dec. 18, 1979 |
| 4176353 |
Radar altimeter tracking circuit apparatus |
Nov. 27, 1979 |
| 4174520 |
Radar altimeter for tropical areas |
Nov. 13, 1979 |
| 4157544 |
Hybrid terminal assist landing |
Jun. 5, 1979 |
| 4156240 |
System for providing angular deviation data for locating a transmitter |
May. 22, 1979 |
| 4144571 |
Vehicle guidance system |
Mar. 13, 1979 |
| 4130360 |
Laser altimeter/profilometer apparatus |
Dec. 19, 1978 |
| 4122529 |
Method and apparatus for providing a circuit with a smooth transfer function |
Oct. 24, 1978 |
| 4023171 |
Microwave velocity sensor using altimeter echo |
May. 10, 1977 |
| 4023168 |
Radar altimeter |
May. 10, 1977 |
| 4016565 |
Aircraft ground closure rate filtering method and means |
Apr. 5, 1977 |
| 3974365 |
Radio altimeter rate linearizer |
Aug. 10, 1976 |
| 3936797 |
Radar-barometric altitude indicator |
Feb. 3, 1976 |
|
|
|
