JPS5922402A - Antenna for searching underground object - Google Patents
Antenna for searching underground objectInfo
- Publication number
- JPS5922402A JPS5922402A JP57130292A JP13029282A JPS5922402A JP S5922402 A JPS5922402 A JP S5922402A JP 57130292 A JP57130292 A JP 57130292A JP 13029282 A JP13029282 A JP 13029282A JP S5922402 A JPS5922402 A JP S5922402A
- Authority
- JP
- Japan
- Prior art keywords
- antenna
- dielectric constant
- dielectric
- bag
- underground object
- 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.)
- Granted
Links
- 239000003989 dielectric material Substances 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims description 2
- 239000011345 viscous material Substances 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims 2
- 239000000463 material Substances 0.000 abstract description 4
- 239000004677 Nylon Substances 0.000 abstract description 2
- 239000004744 fabric Substances 0.000 abstract description 2
- 229920001778 nylon Polymers 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 229920001328 Polyvinylidene chloride Polymers 0.000 abstract 1
- 238000009413 insulation Methods 0.000 abstract 1
- 229920000915 polyvinyl chloride Polymers 0.000 abstract 1
- 239000004800 polyvinyl chloride Substances 0.000 abstract 1
- 239000005033 polyvinylidene chloride Substances 0.000 abstract 1
- 239000007779 soft material Substances 0.000 abstract 1
- 239000002689 soil Substances 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000002592 echocardiography Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010433 feldspar Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/06—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using refracting or diffracting devices, e.g. lens
- H01Q19/09—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using refracting or diffracting devices, e.g. lens wherein the primary active element is coated with or embedded in a dielectric or magnetic material
Landscapes
- Aerials With Secondary Devices (AREA)
- Radar Systems Or Details Thereof (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
Description
【発明の詳細な説明】
単一の電磁波パルスによる地下埋設物探知機にては、そ
のパルス送受波のためのアンテナは地表面に接近して移
動させるので、通常のレーダーと違い電磁波の放射方向
に、大気と大地の境界面が存在し、ここで電磁波パルス
の反射が起き、大地中に送り込まれる電磁波パルスのエ
ネルギは減少する。このような地表面での反射は、６０
％に違するとのデータである。[Detailed Description of the Invention] In underground buried object detectors that use a single electromagnetic wave pulse, the antenna for transmitting and receiving pulse waves is moved close to the ground surface, so unlike normal radar, the radiation direction of the electromagnetic wave is There is an interface between the atmosphere and the earth, where electromagnetic pulses are reflected, reducing the energy of the electromagnetic pulses sent into the earth. Such reflection on the ground surface is 60
The data shows that the difference is %.
本発明はこのような欠点を解決するためのもので、以下
図面によって説明する。The present invention is intended to solve these drawbacks, and will be explained below with reference to the drawings.
第１図は本発明の一実施例の断面図で、１はその表面が
絶縁処理されたアンテナ、２は上部アンテナを包む柔軟
質の材料よりなる袋、３はこの中に充填された誘電体材
、４はアンテナ１の後方および周囲を覆う碗状の遮嵌体
であり必要により、これと、２の間に電波吸収体の層を
設けることもある。５はアンテナ１の給電線、６は地表
面である。FIG. 1 is a cross-sectional view of one embodiment of the present invention, in which 1 is an antenna whose surface is insulated, 2 is a bag made of a flexible material that encloses the upper antenna, and 3 is a dielectric material filled in this bag. A material 4 is a bowl-shaped shielding body that covers the rear and surrounding area of the antenna 1, and a layer of a radio wave absorber may be provided between this and the shielding body 2, if necessary. 5 is a feed line of the antenna 1, and 6 is the ground surface.
以上の如き構成において、３としては地中の波探知物の
周囲媒体と同等の誘電率を有するもので、土、砂、粘土
等またはステアタイト、アルミナ、長石質、マイカレッ
クス等の誘電体材の紛または粒体等を適当に配合したて
の、またはこれらにグリセリン、トランス油等の粘性体
を混合したものまたは、探知場所の土壌そのものを用い
る。In the above configuration, 3 is a dielectric material having the same dielectric constant as the surrounding medium of the underground wave detection object, such as soil, sand, clay, or steatite, alumina, feldspar, micarex, etc. Use freshly mixed powder or granules, or mix these with a viscous substance such as glycerin or transformer oil, or use the soil itself at the detection location.
なお土壌の誘電率は一般にその成分や粒度分布、空隙率
、含水量等によって相違する。したがって被探知物の媒
体と同等で、かつ地表面とのなじみ性も考慮して選定す
る。Note that the dielectric constant of soil generally differs depending on its components, particle size distribution, porosity, water content, etc. Therefore, select a medium that is equivalent to the medium of the object to be detected and also takes into consideration its compatibility with the ground surface.
つぎに軟質プラスチックの袋２としては、布入りの塩化
ビニル、塩化ビニリデンシートまたはナイロン等の誘電
率が大きく、かつ耐摩耗性の良い材料を選定する。Next, for the soft plastic bag 2, a material with a high dielectric constant and good wear resistance is selected, such as cloth-filled vinyl chloride, vinylidene chloride sheet, or nylon.
以上のように本発明は地中の被探知物の周囲媒体と同等
の誘電率を有する誘電体材で、アンテナを覆ったもので
、これを地表面に密着して移動させるときは、大気と大
地のように誘電率の相違いに基づく電磁波パルスの反射
を減少させることができる。As described above, the present invention covers the antenna with a dielectric material having the same dielectric constant as the surrounding medium of the object to be detected underground. It is possible to reduce the reflection of electromagnetic pulses due to the difference in dielectric constant like the earth.
またアンテナが誘電体材の中に埋込まれたためアンテナ
のＱが低下し、余振が抑圧された単一パルス波の維持が
可能となり、エコー受信の際の多重像をなくして測定精
度が向上するとともに、アンテナ自体も小型となり狭い
露地等にアンテナを持ち込み測定することも可能となる
等その効果は極めて大きい。In addition, since the antenna is embedded in a dielectric material, the Q of the antenna is lowered, making it possible to maintain a single pulse wave with suppressed aftershocks, and improving measurement accuracy by eliminating multiple images when receiving echoes. At the same time, the antenna itself becomes smaller, making it possible to carry the antenna into narrow open areas for measurements, which has extremely large effects.
次に第２図は本発明の他の実施例の断面図で、アンテナ
１は円板状の硬質絶縁板７の上に配置され、これと腕状
遮嵌体４によって形成された空間に、第１図の実施例と
同様の誘電体材３を充填したもので、地表面６とアンテ
ナ１の間隔は極めて小となり、反射による電磁波エネル
ギの損失はより減少する。Next, FIG. 2 is a sectional view of another embodiment of the present invention, in which the antenna 1 is placed on a disk-shaped hard insulating plate 7, and in the space formed by this and the arm-shaped shielding body 4. Since the antenna is filled with a dielectric material 3 similar to the embodiment shown in FIG. 1, the distance between the ground surface 6 and the antenna 1 is extremely small, and the loss of electromagnetic wave energy due to reflection is further reduced.
なお５、６は第１図と同様アンテナの給電線地表面であ
る。Note that 5 and 6 are the ground surface of the antenna feeder line as in FIG.
第１図および第２図は本発明の実施例の断面図である。
１・・・アンテナ、２・・・軟質プラスチック袋、３・
・・誘電体材、４・・・腕状遮嵌体５・・・給電線、６
・・・地表面、７・・・硬質絶縁板
特許出願人 宮本秀■1 and 2 are cross-sectional views of embodiments of the invention. 1... Antenna, 2... Soft plastic bag, 3.
...Dielectric material, 4... Arm-shaped shielding body 5... Power supply line, 6
...Ground surface, 7...Hard insulating plate patent applicant Hide Miyamoto■
Claims (1)
有する粉体、紛体または粘体またはこれらの混合物より
なる誘電体材で覆った地下埋設物探知用アンテナ。An antenna for detecting underground objects in which the antenna is covered with a dielectric material made of powder, powder, viscous material, or a mixture thereof that has a dielectric constant equivalent to the surrounding medium of the underground object to be detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57130292A JPS5922402A (en) | 1982-07-28 | 1982-07-28 | Antenna for searching underground object |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57130292A JPS5922402A (en) | 1982-07-28 | 1982-07-28 | Antenna for searching underground object |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5922402A true JPS5922402A (en) | 1984-02-04 |
| JPH0214801B2 JPH0214801B2 (en) | 1990-04-10 |
Family
ID=15030821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57130292A Granted JPS5922402A (en) | 1982-07-28 | 1982-07-28 | Antenna for searching underground object |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5922402A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61180170A (en) * | 1984-10-17 | 1986-08-12 | ブリテイツシユ ガス コ−ポレ−シヨン | Microwave reflection survey method and antenna |
| JPS61180171A (en) * | 1984-10-17 | 1986-08-12 | ブリテイツシユ ガス コ−ポレ−シヨン | Microwave reflection survey method and device |
| WO2014092644A1 (en) * | 2012-12-14 | 2014-06-19 | Decod Science & Technology Pte Ltd | Antenna system for ultra-wideband radar applications |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9052394B2 (en) | 2009-10-06 | 2015-06-09 | Louisiana Tech University Research Foundation | Method and apparatus for detecting buried objects |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5835478A (en) * | 1981-08-27 | 1983-03-02 | Sofuaade:Kk | Locating device for underground structure by radar system |
-
1982
- 1982-07-28 JP JP57130292A patent/JPS5922402A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5835478A (en) * | 1981-08-27 | 1983-03-02 | Sofuaade:Kk | Locating device for underground structure by radar system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61180170A (en) * | 1984-10-17 | 1986-08-12 | ブリテイツシユ ガス コ−ポレ−シヨン | Microwave reflection survey method and antenna |
| JPS61180171A (en) * | 1984-10-17 | 1986-08-12 | ブリテイツシユ ガス コ−ポレ−シヨン | Microwave reflection survey method and device |
| WO2014092644A1 (en) * | 2012-12-14 | 2014-06-19 | Decod Science & Technology Pte Ltd | Antenna system for ultra-wideband radar applications |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0214801B2 (en) | 1990-04-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Scheers | Ultra-wideband ground penetrating radar with application to the detection of anti personnel landmines | |
| CA2531423C (en) | Data acquisition for a ground penetrating radar system | |
| Radzevicius et al. | Pitfalls in GPR data interpretation: differentiating stratigraphy and buried objects from periodic antenna and target effects | |
| JP2003515726A (en) | Ground penetrating radar system and method for detecting objects above or below ground surface | |
| Giannakis et al. | Evidence of shallow basaltic lava layers in Von Kármán crater from Yutu-2 Lunar Penetrating Radar | |
| JPS5922402A (en) | Antenna for searching underground object | |
| US3983750A (en) | Fluid level sensing device | |
| Bano et al. | Modelling and filtering of surface scattering in ground-penetrating radar waves | |
| US4992786A (en) | Electrical conductor detector | |
| Radzevicius et al. | Significance of crossed-dipole antennas for high noise environments | |
| Keeton et al. | Analysis of Simrad EM12 multibeam bathymetry and acoustic backscatter data for seafloor mapping, exemplified at the Mid-Atlantic Ridge at 45 N | |
| McKee | Geology of Kapingamarangi Atoll, Caroline Islands | |
| Van Genderen | Multi-waveform SFCW radar | |
| Moustafa et al. | Performance evaluation of separated aperture sensor GPR system for land mine detection | |
| RU231872U1 (en) | SCREEN FOR GEORADAR ANTENNAS | |
| CN212694077U (en) | Ground penetrating radar for mine geological environment investigation | |
| Moran et al. | Simulation of GPR reflection data from a temperate glacier | |
| Almutairi1* et al. | Develop a novel ground penetrating radar (GPR) for deep imaging to the sand dunes and weathering layers thickness | |
| ZISK et al. | Calibration of radar data from Apollo 16 results, part X(Apollo 16 radar echo data for predicting blockiness of lunar surface) | |
| Moran et al. | Impact of interfacial dipole radiation on UXO target detection using 3-D Kirchhoff imaging | |
| Izyumov et al. | Testing of a georadar in tunnel drifting | |
| Jantan et al. | Note on the occurrence of limestone in the Semanggol Formation, Kedah, Peninsular Malaysia | |
| RU2270460C2 (en) | Method for probing soil environments by pulses of a magnetic field | |
| KOONS | Controlled wave-particle interaction and VLF wave propagation experiments in the outer magnetosphere[Interim Report, 1 Jan. 1978- 30 Sep. 1980] | |
| Harris et al. | A comparison of Landsat and Seasat imagery for geological mapping in difficult terrain |