JPS61174617U - - Google Patents
Info
- Publication number
- JPS61174617U JPS61174617U JP5976585U JP5976585U JPS61174617U JP S61174617 U JPS61174617 U JP S61174617U JP 5976585 U JP5976585 U JP 5976585U JP 5976585 U JP5976585 U JP 5976585U JP S61174617 U JPS61174617 U JP S61174617U
- Authority
- JP
- Japan
- Prior art keywords
- time difference
- transmitting antenna
- explaining
- signal
- received
- 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 2
- 238000010586 diagram Methods 0.000 description 7
- 238000005259 measurement Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5976585U JPS61174617U (de) | 1985-04-22 | 1985-04-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5976585U JPS61174617U (de) | 1985-04-22 | 1985-04-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61174617U true JPS61174617U (de) | 1986-10-30 |
Family
ID=30586485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5976585U Pending JPS61174617U (de) | 1985-04-22 | 1985-04-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61174617U (de) |
-
1985
- 1985-04-22 JP JP5976585U patent/JPS61174617U/ja active Pending
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