GB1516937A - Airborne doppler navigation equipment - Google Patents
Airborne doppler navigation equipmentInfo
- Publication number
- GB1516937A GB1516937A GB1335076A GB1335076A GB1516937A GB 1516937 A GB1516937 A GB 1516937A GB 1335076 A GB1335076 A GB 1335076A GB 1335076 A GB1335076 A GB 1335076A GB 1516937 A GB1516937 A GB 1516937A
- Authority
- GB
- United Kingdom
- Prior art keywords
- navigation equipment
- representing
- doppler navigation
- heading
- transverse
- 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
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
- G01S13/50—Systems of measurement based on relative movement of target
- G01S13/58—Velocity or trajectory determination systems; Sense-of-movement determination systems
- G01S13/60—Velocity or trajectory determination systems; Sense-of-movement determination systems wherein the transmitter and receiver are mounted on the moving object, e.g. for determining ground speed, drift angle, ground track
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
1516937 Doppler navigation equipment DECCA Ltd 28 March 1977 [1 April 1976] 13350/76 Heading H4D Aircraft doppler navigation equipment comprises known means to obtain electric signals V x and V v representing the heading, and transverse, components of velocity in the A/C reference frame, using doppler radar signals reflected from the ground, which signals are fed to a computer which may be digital and calculates the A/C transverse velocity component relative to earth V y <SP>1</SP> from the following equation; where # is a signal representing the rate of change of aircraft bearing as measured by an onboard compass, and G is acceleration due to gravity, the term within the brackets representing an approximation of the roll angle.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1335076A GB1516937A (en) | 1977-03-28 | 1977-03-28 | Airborne doppler navigation equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1335076A GB1516937A (en) | 1977-03-28 | 1977-03-28 | Airborne doppler navigation equipment |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1516937A true GB1516937A (en) | 1978-07-05 |
Family
ID=10021362
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1335076A Expired GB1516937A (en) | 1977-03-28 | 1977-03-28 | Airborne doppler navigation equipment |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1516937A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107728138A (en) * | 2017-09-15 | 2018-02-23 | 电子科技大学 | A kind of maneuvering target tracking method based on current statistical model |
-
1977
- 1977-03-28 GB GB1335076A patent/GB1516937A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107728138A (en) * | 2017-09-15 | 2018-02-23 | 电子科技大学 | A kind of maneuvering target tracking method based on current statistical model |
CN107728138B (en) * | 2017-09-15 | 2020-11-17 | 电子科技大学 | Maneuvering target tracking method based on current statistical model |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |