JPS57166573A - Microwave range finder - Google Patents
Microwave range finderInfo
- Publication number
- JPS57166573A JPS57166573A JP5284181A JP5284181A JPS57166573A JP S57166573 A JPS57166573 A JP S57166573A JP 5284181 A JP5284181 A JP 5284181A JP 5284181 A JP5284181 A JP 5284181A JP S57166573 A JPS57166573 A JP S57166573A
- Authority
- JP
- Japan
- Prior art keywords
- phase
- target
- phase shifter
- inputted
- microwave
- 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
- G01S13/06—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
- G01S13/36—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated with phase comparison between the received signal and the contemporaneously transmitted signal
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 a high-precision range output by setting a state equivalent to that when a target is moved minutely by periodically varying the phase of a received wave by a phase shifter. CONSTITUTION:A microwave from a microwave oscillator 12 is modulated by an AM modulator 13 and then transmitted from a transmitting antenna 15 to a target 16. A reflected wave reflected by the target 16 is received by a receiving antenna 17 and then supplied to a variable phase shifter 18. This variable phase shifter 18 varies the phase of the received wave periodically. The resulting signal is inputted to a phase comparator 21 through an amplifier 18 and an AM detector 20, and phase-compared with a low frequency signal for modulation from a low frequency oscillator 13. The output of the comparator 21 is inputted through a smoothing circuit 22 to a distance arithmetic circuit 23, which calculates a range.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5284181A JPS57166573A (en) | 1981-04-08 | 1981-04-08 | Microwave range finder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5284181A JPS57166573A (en) | 1981-04-08 | 1981-04-08 | Microwave range finder |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57166573A true JPS57166573A (en) | 1982-10-14 |
Family
ID=12926067
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5284181A Pending JPS57166573A (en) | 1981-04-08 | 1981-04-08 | Microwave range finder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57166573A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5680137A (en) * | 1994-12-19 | 1997-10-21 | Honda Giken Kogyo Kabushiki Kaisha | Radar system |
US5686921A (en) * | 1994-12-20 | 1997-11-11 | Honda Giken Kogyo Kabushiki Kaisha | Radar system |
-
1981
- 1981-04-08 JP JP5284181A patent/JPS57166573A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5680137A (en) * | 1994-12-19 | 1997-10-21 | Honda Giken Kogyo Kabushiki Kaisha | Radar system |
US5686921A (en) * | 1994-12-20 | 1997-11-11 | Honda Giken Kogyo Kabushiki Kaisha | Radar system |
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