JPS649387A - Searching device of underground buried article - Google Patents
Searching device of underground buried articleInfo
- Publication number
- JPS649387A JPS649387A JP62163486A JP16348687A JPS649387A JP S649387 A JPS649387 A JP S649387A JP 62163486 A JP62163486 A JP 62163486A JP 16348687 A JP16348687 A JP 16348687A JP S649387 A JPS649387 A JP S649387A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- output
- antennas
- transmitting antennas
- circuit
- 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
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
PURPOSE:To remove unnecessary reflection caused by reflection from the ground surface and the like and improve receiving sensitivity by providing a first and a second transmitting antennas, a first and a second receiving antennas of the same shape thereof, a load dispatching means, a differential receiver and the like. CONSTITUTION:An antenna part A is composed of a pair of transmitting antennas 11, 12 parallelly arranged by spaces and a pair of receiving antennas 21, 22 parallelly arranged by equal spaces thereto. A pulse signal of the same phase and amplitude is output from oscillators 31, 32 when a trigger signal is output from a timing circuit 33 and fed to the transmitting antennas 11, 12 respectively. On the other hand, a differential receiver 34 is synchronized with the trigger signal from the circuit 33 to operate and a signal corresponding to the difference between respective outputs of the receiving antennas 21, 22 is output. Said signal is transmitted to a display 36 after processing of gain adjustment, filtering and the like the aid of a signal processing circuit 35 and a reflected wave image of underground piping and the like is shown.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62163486A JPS649387A (en) | 1987-06-30 | 1987-06-30 | Searching device of underground buried article |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62163486A JPS649387A (en) | 1987-06-30 | 1987-06-30 | Searching device of underground buried article |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS649387A true JPS649387A (en) | 1989-01-12 |
Family
ID=15774780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62163486A Pending JPS649387A (en) | 1987-06-30 | 1987-06-30 | Searching device of underground buried article |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS649387A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06509162A (en) * | 1991-03-11 | 1994-10-13 | ニールセン，クリステン | Device for detecting buried electromagnetically detectable elongated objects |
| US7170449B2 (en) | 2002-11-05 | 2007-01-30 | 3D-Radar As | Antenna system for georadar |
-
1987
- 1987-06-30 JP JP62163486A patent/JPS649387A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06509162A (en) * | 1991-03-11 | 1994-10-13 | ニールセン，クリステン | Device for detecting buried electromagnetically detectable elongated objects |
| US7170449B2 (en) | 2002-11-05 | 2007-01-30 | 3D-Radar As | Antenna system for georadar |
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