SE8800069D0 - Radar systems - Google Patents
Radar systemsInfo
- Publication number
- SE8800069D0 SE8800069D0 SE8800069A SE8800069A SE8800069D0 SE 8800069 D0 SE8800069 D0 SE 8800069D0 SE 8800069 A SE8800069 A SE 8800069A SE 8800069 A SE8800069 A SE 8800069A SE 8800069 D0 SE8800069 D0 SE 8800069D0
- Authority
- SE
- Sweden
- Prior art keywords
- sample point
- tracking
- functions
- height
- search
- Prior art date
Links
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
- G01S13/10—Systems for measuring distance only using transmission of interrupted, pulse modulated waves
- G01S13/103—Systems for measuring distance only using transmission of interrupted, pulse modulated waves particularities of the measurement of the distance
-
- 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
- G01S13/66—Radar-tracking systems; Analogous systems
- G01S13/70—Radar-tracking systems; Analogous systems for range tracking only
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
A radar system for altitude determination comprises a pulsed radar transmitter and receiver having means for adjusting the transmitted pulse width and receiver bandwidth as functions of a detectable search/track height, and means for varying the value of a bias factor relating to an equilibrium tracking condition and for varying count boundaries of a status counter for an integration relating to a tracking lock condition as functions of the detected search/track height whereby the sensitivity of the radar system is improved over conventional altimeters at higher altitudes. The tracking loop determines whether the average power detected at a "signal" sample point (which, in the steady state, will be on the leading edge of the echo) exceeds the power at a "noise" sample point by the height-dependent bias factor. The lock indicator monitors power at a further, "status", sample point. <IMAGE>
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8609448A GB2281164B (en) | 1986-04-17 | 1986-04-17 | Radar systems for altitude determination |
Publications (2)
Publication Number | Publication Date |
---|---|
SE8800069D0 true SE8800069D0 (en) | 1988-01-12 |
SE8800069L SE8800069L (en) | 1994-12-28 |
Family
ID=10596393
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8800069A SE8800069L (en) | 1986-04-17 | 1988-01-12 | Radar systems |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE3736055A1 (en) |
GB (1) | GB2281164B (en) |
SE (1) | SE8800069L (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10039943A1 (en) | 2000-08-16 | 2002-02-28 | Adc Automotive Dist Control | Method for operating a radar system |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3189895A (en) * | 1955-06-13 | 1965-06-15 | Westinghouse Electric Corp | Automatic range tracking device |
GB2029152A (en) * | 1978-07-12 | 1980-03-12 | Secr Defence | Radio altimeter with variable beam width |
-
1986
- 1986-04-17 GB GB8609448A patent/GB2281164B/en not_active Expired - Fee Related
-
1987
- 1987-10-24 DE DE19873736055 patent/DE3736055A1/en not_active Ceased
-
1988
- 1988-01-12 SE SE8800069A patent/SE8800069L/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
DE3736055A1 (en) | 1995-01-05 |
SE8800069L (en) | 1994-12-28 |
GB2281164A (en) | 1995-02-22 |
GB2281164B (en) | 1995-06-21 |
GB8609448D0 (en) | 1994-09-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NAV | Patent application has lapsed |
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