JPS5672371A - Measuring method of speed of mobile body - Google Patents
Measuring method of speed of mobile bodyInfo
- Publication number
- JPS5672371A JPS5672371A JP15035379A JP15035379A JPS5672371A JP S5672371 A JPS5672371 A JP S5672371A JP 15035379 A JP15035379 A JP 15035379A JP 15035379 A JP15035379 A JP 15035379A JP S5672371 A JPS5672371 A JP S5672371A
- Authority
- JP
- Japan
- Prior art keywords
- mobile body
- electromagnetic waves
- speed
- measuring method
- angle
- 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.)
- Pending
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
- G01S13/588—Velocity or trajectory determination systems; Sense-of-movement determination systems deriving the velocity value from the range measurement
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
PURPOSE:To obtain the speed of a mobile body, even if an angle between the moving direction of the mobile body and the direction of radiation of electromagnetic waves is unknown, by radiating electromagnetic waves two times and measuring the Doppler frequencies to said two electromagnetic waves. CONSTITUTION:Two electromagnetic waves crossing each other with a known angle DELTAtheta toward a nobile body 2 are radiated from electromagnetic wave radiation antennas 3, 3' and the Doppler frequency shifts are measured. The speed of the mobile body 2 are be obtained through the operation by using the Doppler frequency shift and the crossing angle DELTAtheta of the electromagnetic waves.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15035379A JPS5672371A (en) | 1979-11-19 | 1979-11-19 | Measuring method of speed of mobile body |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15035379A JPS5672371A (en) | 1979-11-19 | 1979-11-19 | Measuring method of speed of mobile body |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5672371A true JPS5672371A (en) | 1981-06-16 |
Family
ID=15495127
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15035379A Pending JPS5672371A (en) | 1979-11-19 | 1979-11-19 | Measuring method of speed of mobile body |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5672371A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009192318A (en) * | 2008-02-13 | 2009-08-27 | Yokogawa Denshikiki Co Ltd | Float and flow rate measurement method |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5098799A (en) * | 1973-12-27 | 1975-08-06 |
-
1979
- 1979-11-19 JP JP15035379A patent/JPS5672371A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5098799A (en) * | 1973-12-27 | 1975-08-06 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009192318A (en) * | 2008-02-13 | 2009-08-27 | Yokogawa Denshikiki Co Ltd | Float and flow rate measurement method |
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