JPH08129073A - Method for predicting rainfall in narrow area utilizing attenuation by rainfall - Google Patents
Method for predicting rainfall in narrow area utilizing attenuation by rainfallInfo
- Publication number
- JPH08129073A JPH08129073A JP6265920A JP26592094A JPH08129073A JP H08129073 A JPH08129073 A JP H08129073A JP 6265920 A JP6265920 A JP 6265920A JP 26592094 A JP26592094 A JP 26592094A JP H08129073 A JPH08129073 A JP H08129073A
- Authority
- JP
- Japan
- Prior art keywords
- rainfall
- broadcast wave
- sky
- attenuation
- broadcast waves
- 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.)
- Withdrawn
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/40—Controlling or monitoring, e.g. of flood or hurricane; Forecasting, e.g. risk assessment or mapping
Landscapes
- Radio Relay Systems (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、屋根開閉式競技場、農
作物栽培ハウス等における、屋根の自動開閉装置および
降雨による浸水防止を目的とした排水装置等の制御のた
めの、狭範囲降雨予測方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a narrow range rainfall prediction for controlling an automatic roof opening / closing device and a drainage device for the purpose of preventing inundation due to rainfall in a roof open / close type stadium, a crop cultivation house, etc. Regarding the method.
【０００２】[0002]
【従来の技術】従来の降雨検出方法としては、電磁波送
信部および受信部を設置して、その間を伝搬する電磁波
の降雨による減衰を用いて降雨を検出する方法およびレ
ーダ雨量計のデータを地上雨量計のデータを用いて較正
する事で、降雨分布を算出する方法がある。2. Description of the Related Art As a conventional rainfall detection method, an electromagnetic wave transmission unit and a reception unit are installed, and a method of detecting rainfall using attenuation of electromagnetic waves propagating between them is used. There is a method to calculate the rainfall distribution by calibrating using the total data.
【０００３】前者の文献としては、特開平１−３０５３
９３号公報を、後者の文献としては、特開昭６３−３１
３０８８号公報をれぞれ挙げることができる。As the former document, Japanese Patent Application Laid-Open No. 1-3053
Japanese Unexamined Patent Publication No. 63-31
No. 3088 can be mentioned.
【０００４】[0004]
【発明が解決しようとする課題】上述の従来技術のうち
電磁波送信部および受信部を設置して、その間を伝搬す
る電磁波の降雨による減衰を用いて降雨を検出する方法
では、電磁波送信部を設置する事が必要であり、遥か上
空の降雨を検出するためには、電磁波送信部を上空に設
置しなければならないが、設置高度には限界がある。ま
た、レーダ雨量計のデータを地上雨量計のデータを用い
て較正する事で、降雨分布を算出する方法では、レーダ
の降雨検知範囲が広域にわたる事と、地上に設置された
雨量計のデータを必要とするため、狭範囲の降雨を予測
することができない事と、地上の降雨データが必要であ
り、事前に降雨を予測する事は難しい。In the method of installing the electromagnetic wave transmitting unit and the receiving unit among the above-mentioned prior arts and detecting the rainfall by using the attenuation of the electromagnetic wave propagating between them by the rainfall, the electromagnetic wave transmitting unit is installed. It is necessary to install the electromagnetic wave transmitter in the sky to detect rainfall in the sky, but the installation altitude is limited. In addition, the method of calculating rainfall distribution by calibrating the data of the radar rain gauge using the data of the ground rain gauge shows that the rainfall detection range of the radar covers a wide area and the data of the rain gauge installed on the ground. Since it is necessary, it is difficult to predict rainfall in a narrow range and it is necessary to collect rainfall data on the ground. It is difficult to predict rainfall in advance.
【０００５】本発明の目的は、遥か上空から送られてく
るＢＳ放送波を利用する事で、電磁波送信部を設置する
ことなく、上空の降雨を実際に検知し、降雨が地上に到
達するまでに狭範囲の降雨予測を短時間に確実に予測
し、降雨情報を提供する事にある。The object of the present invention is to utilize BS broadcast waves sent from far above, so that it is possible to detect rain in the sky without installing an electromagnetic wave transmission unit and until the rain reaches the ground. It is to provide rainfall information by accurately predicting rainfall forecasts in a narrow range in a short time.
【０００６】[0006]
【課題を解決するための手段】本発明は、前記課題を解
決するため、放送衛星から送信されるＢＳ放送波を利用
し、ＢＳ放送波をＢＳ受信アンテナにより受信して、Ｂ
Ｓ放送波の降雨による電界強度の減衰をＢＳ受信機によ
り検出し、上空の降雨によるＢＳ放送波の減衰が発生し
てから地上に到達するまでの時間差を計測し、かつ、上
空の降雨検知時点での風速および風向を風速・風向計に
より計測し、コンピュータに送出する降雨減衰を利用し
た狭範囲降雨予測方法を構成する。In order to solve the above problems, the present invention utilizes a BS broadcast wave transmitted from a broadcasting satellite, receives the BS broadcast wave by a BS receiving antenna, and
The BS receiver detects the attenuation of the electric field strength due to the rainfall of the S broadcast wave, measures the time difference from the occurrence of the attenuation of the BS broadcast wave due to the rainfall in the sky to the arrival at the ground, and the time when the rainfall in the sky is detected. A narrow-range rainfall prediction method using rain attenuation that measures wind speed and wind direction at a wind speed and wind direction meter and sends it to a computer is constructed.
【０００７】[0007]
【実施例】次に、本発明の一実施例について図１及び図
２を参照して説明する。Next, an embodiment of the present invention will be described with reference to FIGS.
【０００８】（１）放送衛星１は、現在静止衛星として
打ち上げられているＢＳ放送衛星である。これは、ＳＨ
Ｆ帯のＢＳ放送波を地上のＢＳ受信アンテナ４に送出す
るものである。(1) Broadcast satellite 1 is a BS broadcast satellite currently launched as a geostationary satellite. This is SH
The BS broadcast wave in the F band is transmitted to the BS receiving antenna 4 on the ground.
【０００９】（２）上空の降雨２は、地上に到達する降
雨と比較して、空気抵抗が少ない事から粒が大きい。放
送衛星１からのＢＳ放送波３は、ＳＨＦ帯の電波を使用
しているため波長が極めて短く、上空の粒の大きな降雨
２と波長が一致する。このため、上空の粒の大きな降雨
２は、ＢＳ放送波３が通過すると、ＢＳ放送波３の電界
強度を極端に減衰させる働きがある。(2) Raindrops 2 in the sky are large in size because they have less air resistance than raindrops reaching the ground. The BS broadcast wave 3 from the broadcasting satellite 1 has an extremely short wavelength because it uses radio waves in the SHF band, and has the same wavelength as the rainfall 2 with large grains in the sky. Therefore, when the BS broadcast wave 3 passes, the rain 2 with large grains in the sky has a function of extremely reducing the electric field strength of the BS broadcast wave 3.
【００１０】（３）ＢＳ放送波３は、前述の通り上空の
降雨２を通過すると、電界強度が極端に減衰するという
特徴を持っている。(3) The BS broadcast wave 3 is characterized in that the electric field strength is extremely attenuated when passing through the rainfall 2 in the sky as described above.
【００１１】（４）ＢＳ受信アンテナ４は、ＢＳ放送波
３を受信するためのもので、上空の静止放送衛星１から
輻射されるＢＳ放送波３を受信する働きがある。(4) The BS receiving antenna 4 is for receiving the BS broadcast wave 3, and has a function of receiving the BS broadcast wave 3 radiated from the stationary broadcast satellite 1 in the sky.
【００１２】（５）ＢＳ受信機５は、ＢＳ受信アンテナ
４からのＢＳ放送波３の電界強度を検出し、コンピュー
タ７へ電界強度をデータとして送出する働きがある。(5) The BS receiver 5 has a function of detecting the electric field strength of the BS broadcast wave 3 from the BS receiving antenna 4 and sending the electric field strength to the computer 7 as data.
【００１３】降雨が有ったときと無かったときとのＢＳ
放送波３の電界強度差ＡをＢＳ受信機５で検知する事に
より、降雨の有無及びその量を検知する。またて、上空
の降雨によるＢＳ放送波３の減衰が発生してから地上に
到達するまでの時間差Ｂを計測する。BS with and without rainfall
By detecting the electric field intensity difference A of the broadcast wave 3 with the BS receiver 5, the presence or absence of rainfall and its amount are detected. In addition, the time difference B from when the BS broadcast wave 3 is attenuated due to rainfall in the sky to when it reaches the ground is measured.
【００１４】（６）風速・風向計６は、上空の降雨検知
時点での風速および風向を計測し、上空で発生した降雨
２が地上のＢＳ放送波受信地点に落ちてくるか否か予測
する要素として、コンピュータ７に風速、風向の計測デ
ータを送出する働きがある。(6) The wind speed / direction indicator 6 measures the wind speed and the wind direction at the time of rainfall detection in the sky, and predicts whether the rainfall 2 generated in the sky will fall to the BS broadcast wave reception point on the ground. As an element, it has a function of sending measurement data of wind speed and wind direction to the computer 7.
【００１５】（７）コンピュータ７は、ＢＳ受信機５か
らのＢＳ放送波３の電界強度減衰量により上空の降雨２
を検知する。しかし、上空で発生した降雨２がＢＳ放送
波受信地点に落ちるか否かは、発生時の降雨量および風
速および風向が大きく影響する。そこで、ＢＳ放送波３
の降雨減衰量による降雨量の検出および風速・風向計６
からの風速および風向の計測データを降雨有無の判断要
素として用い、ＢＳ放送波受信地点で降雨がいつ起こる
か否か判断する。(7) The computer 7 causes rainfall 2 in the sky due to the electric field intensity attenuation of the BS broadcast wave 3 from the BS receiver 5.
To detect. However, the amount of rainfall at the time of occurrence, the wind speed, and the wind direction greatly influence whether or not the rainfall 2 generated in the sky falls to the BS broadcast wave reception point. Therefore, BS broadcast wave 3
Of Rainfall by Rainfall Amount of Rainfall and Wind Speed and Direction Indicator 6
The measured data of the wind speed and the wind direction are used as the factors for determining the presence / absence of rainfall to determine when the rainfall will occur at the BS broadcast wave receiving point.
【００１６】（８）コンピュータ７は、降雨有りと予測
すると、屋根の自動開閉装置、排水装置等に制御信号を
送出する。(8) When the computer 7 predicts that there will be rainfall, it sends a control signal to the automatic roof opening / closing device, drainage device, and the like.
【００１７】（９）コンピュータ７は、学習機能により
降雨が発生した時のＢＳ放送波受信地点での風速・風向
データとＢＳ放送波受信地点での降雨有無をデータベー
タとして保管し、次回の降雨減衰発生の際、ＢＳ放送波
受信地点で降雨が有るか無いかの予測に役立て、降雨予
測を更に正確なものとする。(9) The computer 7 stores the wind speed / wind direction data at the BS broadcast wave reception point and the presence / absence of rainfall at the BS broadcast wave reception point as a data beta when the rainfall occurs due to the learning function, and the next rainfall. When attenuation occurs, it is useful for predicting whether or not there is rainfall at the BS broadcast wave reception point, and makes the rainfall prediction more accurate.
【００１８】[0018]
【発明の効果】以上説明したように、本発明は、放送衛
星から送信されるＢＳ放送波の降雨減衰特性を利用して
実際の降雨を上空で検知できるため、降雨予測のための
電磁波送信部を設置する事無く、ＢＳ放送波が到達する
ところであれば、いかなる場所でも狭い範囲の降雨を短
時間に確実に予測する効果を奏する。As described above, according to the present invention, since the rainfall attenuation characteristic of the BS broadcast wave transmitted from the broadcasting satellite can be used to detect the actual rainfall in the sky, the electromagnetic wave transmitter for rainfall prediction. The effect of reliably predicting rainfall in a narrow range in a short time can be obtained at any place where the BS broadcast wave arrives without installing.
【００１９】また、遥か上空で実際の降雨を検知するた
め、上空の降雨が地上に到達する前に（数分程度早
く）、降雨予測ができる効果を奏する。Further, since the actual rainfall is detected in the far upper sky, the rainfall can be predicted before the rain in the sky reaches the ground (a few minutes earlier).
【図１】本発明の一実施例の全体図である。FIG. 1 is an overall view of an embodiment of the present invention.
【図２】本発明の一実施例における上空の降雨検知に利
用するＢＳ放送波の降雨による減衰特性を示す図であ
る。FIG. 2 is a diagram showing attenuation characteristics of BS broadcast waves used for rainfall detection in one embodiment of the present invention due to rainfall.
１ 放送衛星 ２ 降雨 ３ ＢＳ放送波 ４ ＢＳ受信アンテナ ５ ＢＳ受信機 ６ 風速・風向計 ７ コンピュータ 1 Broadcast Satellite 2 Rainfall 3 BS Broadcast Wave 4 BS Receiving Antenna 5 BS Receiver 6 Wind Speed / Windmeter 7 Computer
Claims (2)
用し、ＢＳ放送波の降雨による減衰量を検知することに
より狭い範囲の降雨を予測する事を特徴とする降雨減衰
を利用した狭範囲降雨予測方法。1. A narrow range utilizing rain attenuation, characterized in that a BS broadcast wave transmitted from a broadcasting satellite is used to detect the rain attenuation of the BS broadcast wave to predict rainfall in a narrow range. Rainfall prediction method.
信して、ＢＳ放送波の電界強度をＢＳ受信機により検出
し、上空の降雨によるＢＳ放送波の減衰が発生してから
地上に到達するまでの時間差を計測し、かつ、上空の降
雨検知時点での風速および風向を風速・風向計により計
測し、コンピュータに送出することを特徴とする請求項
１記載の降雨減衰を利用した狭範囲降雨予測方法。2. The BS broadcast wave is received by a BS receiving antenna, the electric field strength of the BS broadcast wave is detected by the BS receiver, and the BS broadcast wave is attenuated by rainfall in the sky until it reaches the ground. The narrow range rainfall prediction using rain attenuation according to claim 1, characterized in that the time difference is measured, and the wind speed and direction at the time of rainfall detection in the sky are measured by a wind speed and anemometer and sent to a computer. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6265920A JPH08129073A (en) | 1994-10-31 | 1994-10-31 | Method for predicting rainfall in narrow area utilizing attenuation by rainfall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6265920A JPH08129073A (en) | 1994-10-31 | 1994-10-31 | Method for predicting rainfall in narrow area utilizing attenuation by rainfall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08129073A true JPH08129073A (en) | 1996-05-21 |
Family
ID=17423936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6265920A Withdrawn JPH08129073A (en) | 1994-10-31 | 1994-10-31 | Method for predicting rainfall in narrow area utilizing attenuation by rainfall |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08129073A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000009857A (en) * | 1998-06-26 | 2000-01-14 | Mitsubishi Electric Corp | Weather radar device |
| JP2005321235A (en) * | 2004-05-06 | 2005-11-17 | Nippon Hoso Kyokai <Nhk> | Radio wave attenuation calculation system, maximum attenuation analysis system, rate of influence of rainfall analysis system and radio wave attenuation calculation program |
| CN106548613A (en) * | 2016-11-02 | 2017-03-29 | 中国人民解放军理工大学 | For the region microwave link networking signal pickup assembly and method of Rainfall estimation |
| JP2018197734A (en) * | 2017-05-22 | 2018-12-13 | 安田電機暖房株式会社 | Rainfall measurement apparatus |
| JP2018205214A (en) * | 2017-06-07 | 2018-12-27 | 大成建設株式会社 | Rainfall prediction device |
| CN110470602A (en) * | 2019-08-27 | 2019-11-19 | 上海航天测控通信研究所 | Spaceborne Terahertz multi-angle ice cloud imager |
| JP2020064035A (en) * | 2018-10-17 | 2020-04-23 | 安田電機暖房株式会社 | Disaster prevention-capable satellite broadcast television device having rainfall intensity measurement and display function |
-
1994
- 1994-10-31 JP JP6265920A patent/JPH08129073A/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000009857A (en) * | 1998-06-26 | 2000-01-14 | Mitsubishi Electric Corp | Weather radar device |
| JP2005321235A (en) * | 2004-05-06 | 2005-11-17 | Nippon Hoso Kyokai <Nhk> | Radio wave attenuation calculation system, maximum attenuation analysis system, rate of influence of rainfall analysis system and radio wave attenuation calculation program |
| CN106548613A (en) * | 2016-11-02 | 2017-03-29 | 中国人民解放军理工大学 | For the region microwave link networking signal pickup assembly and method of Rainfall estimation |
| JP2018197734A (en) * | 2017-05-22 | 2018-12-13 | 安田電機暖房株式会社 | Rainfall measurement apparatus |
| JP2018205214A (en) * | 2017-06-07 | 2018-12-27 | 大成建設株式会社 | Rainfall prediction device |
| JP2020064035A (en) * | 2018-10-17 | 2020-04-23 | 安田電機暖房株式会社 | Disaster prevention-capable satellite broadcast television device having rainfall intensity measurement and display function |
| CN110470602A (en) * | 2019-08-27 | 2019-11-19 | 上海航天测控通信研究所 | Spaceborne Terahertz multi-angle ice cloud imager |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20020115 |