JPH02128584U - - Google Patents
Info
- Publication number
- JPH02128584U JPH02128584U JP3428189U JP3428189U JPH02128584U JP H02128584 U JPH02128584 U JP H02128584U JP 3428189 U JP3428189 U JP 3428189U JP 3428189 U JP3428189 U JP 3428189U JP H02128584 U JPH02128584 U JP H02128584U
- Authority
- JP
- Japan
- Prior art keywords
- underground
- antenna
- antenna section
- cylindrical body
- object detection
- 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
- 238000001514 detection method Methods 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 239000011358 absorbing material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
- Radar Systems Or Details Thereof (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3428189U JPH02128584U (en]) | 1989-03-28 | 1989-03-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3428189U JPH02128584U (en]) | 1989-03-28 | 1989-03-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02128584U true JPH02128584U (en]) | 1990-10-23 |
Family
ID=31538615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3428189U Pending JPH02128584U (en]) | 1989-03-28 | 1989-03-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02128584U (en]) |
-
1989
- 1989-03-28 JP JP3428189U patent/JPH02128584U/ja active Pending
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