JPS5596472A - Distance measuring method employing microwave - Google Patents
Distance measuring method employing microwaveInfo
- Publication number
- JPS5596472A JPS5596472A JP337679A JP337679A JPS5596472A JP S5596472 A JPS5596472 A JP S5596472A JP 337679 A JP337679 A JP 337679A JP 337679 A JP337679 A JP 337679A JP S5596472 A JPS5596472 A JP S5596472A
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- beat
- wave
- microwave
- deltat
- 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
- G01S13/34—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
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)
Abstract
PURPOSE:To decrease the fixed errors and shorten the time of response by counting the number n of beat pulses during the repeated frequency of a microwave and determining the value A through multiplication of the repeated frequency by 1/n and the frequency B of the beat wave. CONSTITUTION:A microwave modulated by a given repeated frequency is radiated. The radiating wave 15 and the reflecting wave 16 are arranged to form a beat wave 17. A beat pulse is formed related to the frequency of the beat wave. The number n of the beat pulses during the repeated frequency of the microwave is counted and the value A is determined through multiplification of the repeated frequency by 1/n. The frequency B of the beat wave is subtracted from the value A to determine DELTAT'. Based on the list previously obtained from the relation between DELTAT' and the distance R to the surface to be measured, the actual distance R is determined corresponding to the above mentioned DELTAT'.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP337679A JPS5596472A (en) | 1979-01-18 | 1979-01-18 | Distance measuring method employing microwave |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP337679A JPS5596472A (en) | 1979-01-18 | 1979-01-18 | Distance measuring method employing microwave |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5596472A true JPS5596472A (en) | 1980-07-22 |
Family
ID=11555627
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP337679A Pending JPS5596472A (en) | 1979-01-18 | 1979-01-18 | Distance measuring method employing microwave |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5596472A (en) |
-
1979
- 1979-01-18 JP JP337679A patent/JPS5596472A/en active Pending
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