JPH0248070B2 - - Google Patents
Info
- Publication number
- JPH0248070B2 JPH0248070B2 JP57167447A JP16744782A JPH0248070B2 JP H0248070 B2 JPH0248070 B2 JP H0248070B2 JP 57167447 A JP57167447 A JP 57167447A JP 16744782 A JP16744782 A JP 16744782A JP H0248070 B2 JPH0248070 B2 JP H0248070B2
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- filter
- altitude
- value
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000004044 response Effects 0.000 claims description 65
- 230000007423 decrease Effects 0.000 claims description 11
- 238000012546 transfer Methods 0.000 claims description 7
- 230000035559 beat frequency Effects 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 4
- 230000006870 function Effects 0.000 description 12
- 239000003990 capacitor Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 5
- 238000001228 spectrum Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 240000007320 Pinus strobus Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/06—Systems determining position data of a target
- G01S13/08—Systems for measuring distance only
- G01S13/32—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
- G01S13/34—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or a signal derived therefrom, with a locally-generated signal related to the contemporaneously transmitted signal
- G01S13/345—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or a signal derived therefrom, with a locally-generated signal related to the contemporaneously transmitted signal using triangular modulation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/882—Radar or analogous systems specially adapted for specific applications for altimeters
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar Systems Or Details Thereof (AREA)
- Filters That Use Time-Delay Elements (AREA)
- Networks Using Active Elements (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/306,038 US4427981A (en) | 1981-09-28 | 1981-09-28 | Tracking filter for radio altimeter |
US306038 | 1999-05-06 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS58131576A JPS58131576A (ja) | 1983-08-05 |
JPH0248070B2 true JPH0248070B2 (en, 2012) | 1990-10-23 |
Family
ID=23183475
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP57167447A Granted JPS58131576A (ja) | 1981-09-28 | 1982-09-25 | 可変周波数レスポンスフイルタ |
Country Status (4)
Country | Link |
---|---|
US (1) | US4427981A (en, 2012) |
JP (1) | JPS58131576A (en, 2012) |
CA (1) | CA1177941A (en, 2012) |
FR (1) | FR2513831B1 (en, 2012) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0464369U (en, 2012) * | 1990-10-05 | 1992-06-02 |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6212277U (en, 2012) * | 1985-07-08 | 1987-01-24 | ||
US4905009A (en) * | 1987-06-01 | 1990-02-27 | Kaman Aerospace Corporation | Distance measuring device |
US4806935A (en) * | 1987-09-17 | 1989-02-21 | Fosket Timothy G | Closed loop velocity/altitude sensor for FM-CW doppler radars |
FR2623912B1 (fr) * | 1987-11-27 | 1990-03-23 | Lacroix E Tous Artifices | Detecteur radioaltimetrique et fusee de proximite equipee d'un tel detecteur |
DE3830992A1 (de) * | 1988-09-12 | 1990-03-22 | Messerschmitt Boelkow Blohm | Radarhoehenmesser |
US5047778A (en) * | 1990-10-11 | 1991-09-10 | The Boeing Company | FMCW radar range tracker and method |
FR2800878B1 (fr) * | 1999-11-10 | 2003-06-13 | Thomson Csf | Methode de controle pour radioaltimetre de type fm/cw et radioaltimetre concu pour la mise en oeuvre de cette methode |
US6362776B1 (en) * | 2000-02-04 | 2002-03-26 | Honeywell International Inc. | Precision radar altimeter with terrain feature coordinate location capability |
US6992614B1 (en) * | 2004-04-22 | 2006-01-31 | Honeywell International Inc. | Radar altimeter |
JP5898009B2 (ja) * | 2012-07-11 | 2016-04-06 | 矢崎総業株式会社 | コネクタ |
US9867180B2 (en) | 2015-12-17 | 2018-01-09 | Honeywell International Inc. | Cognitive allocation of TDMA resources in the presence of a radio altimeter |
US10725170B2 (en) | 2015-12-17 | 2020-07-28 | Honeywell International Inc. | Frequency modulated continuous wave radio altimeter spectral monitoring |
US10177868B2 (en) * | 2015-12-17 | 2019-01-08 | Honeywell International Inc. | Systems and methods to synchronize wireless devices in the presence of a FMCW radio altimeter |
US10299266B2 (en) | 2017-03-20 | 2019-05-21 | Honeywell International Inc. | Delay calculation in wireless systems |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3065465A (en) | 1958-04-25 | 1962-11-20 | Raytheon Co | Distance measuring devices |
US3789398A (en) | 1959-03-12 | 1974-01-29 | Itt | Fm-cw radar range system |
FR1381348A (fr) * | 1962-10-01 | 1964-12-14 | Sanders Associates Inc | Dispositif de commande automatique de bande passante |
DE1251391B (en, 2012) * | 1962-10-01 | |||
US3218641A (en) * | 1962-10-01 | 1965-11-16 | Sanders Associates Inc | Fm radar system with automatic bandwidth control |
US3334344A (en) | 1965-09-20 | 1967-08-01 | Lab For Electronics Inc | Doppler radar altimeter |
US3341849A (en) * | 1966-01-26 | 1967-09-12 | Bendix Corp | Self-calibrating, self-testing radio altimeter |
US3344423A (en) | 1966-07-05 | 1967-09-26 | Honeywell Inc | Control apparatus |
GB1301227A (en, 2012) | 1971-01-22 | 1972-12-29 | ||
US3760287A (en) * | 1971-08-28 | 1973-09-18 | Bell Telephone Labor Inc | Digitally controllable variable active rc filter |
US4107681A (en) | 1977-05-26 | 1978-08-15 | Rockwell International Corporation | Method and apparatus for automatically adjusting the resolution of a radio altimeter over its operating altitude range |
US4122529A (en) | 1977-07-25 | 1978-10-24 | Rockwell International Corporation | Method and apparatus for providing a circuit with a smooth transfer function |
-
1981
- 1981-09-28 US US06/306,038 patent/US4427981A/en not_active Expired - Lifetime
-
1982
- 1982-04-22 CA CA000401470A patent/CA1177941A/en not_active Expired
- 1982-09-25 JP JP57167447A patent/JPS58131576A/ja active Granted
- 1982-09-27 FR FR828216194A patent/FR2513831B1/fr not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0464369U (en, 2012) * | 1990-10-05 | 1992-06-02 |
Also Published As
Publication number | Publication date |
---|---|
JPS58131576A (ja) | 1983-08-05 |
US4427981A (en) | 1984-01-24 |
FR2513831B1 (fr) | 1989-06-16 |
CA1177941A (en) | 1984-11-13 |
FR2513831A1 (fr) | 1983-04-01 |
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