| |
 |
|
Class Information
Number: 342/122
Name: Communications: directive radio wave systems and devices (e.g., radar, radio navigation) > Determining distance > Altimeter > Fm type
Description: Subject matter wherein the radar altimeter carrier signal is frequency modified.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 4599618 |
Nearest return tracking in an FMCW system |
Jul. 8, 1986 |
| 4594676 |
Aircraft groundspeed measurement system and technique |
Jun. 10, 1986 |
| 4568938 |
Radar altimeter nearest return tracking |
Feb. 4, 1986 |
| 4509049 |
FMCW system for providing search-while-track functions and altitude rate determination |
Apr. 2, 1985 |
| 4503401 |
Wideband phase locked loop tracking oscillator for radio altimeter |
Mar. 5, 1985 |
| 4468638 |
Linear sweep frequency modulator for FM/CW radio altimeter |
Aug. 28, 1984 |
| 4456911 |
Frequency modulated continuous wave altimeter |
Jun. 26, 1984 |
| 4435708 |
Means for eliminating step error in FM/CW radio altimeters |
Mar. 6, 1984 |
| 4427981 |
Tracking filter for radio altimeter |
Jan. 24, 1984 |
| 4282524 |
Linear Bessel ranging radar |
Aug. 4, 1981 |
| 4107679 |
Frequency modulator for high-precision range measurements |
Aug. 15, 1978 |
| 4107681 |
Method and apparatus for automatically adjusting the resolution of a radio altimeter over its operating altitude range |
Aug. 15, 1978 |
| 4106018 |
Method and apparatus for reducing interference between plural radio altimeters |
Aug. 8, 1978 |
|
|
|
