JPH0436464Y2 - - Google Patents
Info
- Publication number
- JPH0436464Y2 JPH0436464Y2 JP2603987U JP2603987U JPH0436464Y2 JP H0436464 Y2 JPH0436464 Y2 JP H0436464Y2 JP 2603987 U JP2603987 U JP 2603987U JP 2603987 U JP2603987 U JP 2603987U JP H0436464 Y2 JPH0436464 Y2 JP H0436464Y2
- Authority
- JP
- Japan
- Prior art keywords
- antenna
- radio wave
- ground
- receiver
- underground
- 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.)
- Expired
Links
- 238000001514 detection method Methods 0.000 claims description 17
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
Landscapes
- Radar Systems Or Details Thereof (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2603987U JPH0436464Y2 (es) | 1987-02-23 | 1987-02-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2603987U JPH0436464Y2 (es) | 1987-02-23 | 1987-02-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63135181U JPS63135181U (es) | 1988-09-05 |
| JPH0436464Y2 true JPH0436464Y2 (es) | 1992-08-27 |
Family
ID=30826749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2603987U Expired JPH0436464Y2 (es) | 1987-02-23 | 1987-02-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0436464Y2 (es) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0516542Y2 (es) * | 1987-03-13 | 1993-04-30 |
-
1987
- 1987-02-23 JP JP2603987U patent/JPH0436464Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63135181U (es) | 1988-09-05 |
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