JPH02280082A - Water vapor content measuring system - Google Patents
Water vapor content measuring systemInfo
- Publication number
- JPH02280082A JPH02280082A JP10060389A JP10060389A JPH02280082A JP H02280082 A JPH02280082 A JP H02280082A JP 10060389 A JP10060389 A JP 10060389A JP 10060389 A JP10060389 A JP 10060389A JP H02280082 A JPH02280082 A JP H02280082A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- water vapor
- millimeter wave
- transmitter
- wave band
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 230000008054 signal transmission Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 abstract description 17
- 238000005259 measurement Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Radar Systems Or Details Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は短ミリ波帯信号の伝搬特性を利用して伝搬路中
の水蒸気量を測定するシステムに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a system for measuring the amount of water vapor in a propagation path using the propagation characteristics of short millimeter wave band signals.
一般に、マイクロ波等の高周波を用いる無線通信システ
ムでは、伝送路における水蒸気が電波の伝搬に影響を与
えるため、伝送路における水蒸気量を測定することが要
求される。従来、この種の水蒸気量測定システムとして
は、伝送路に湿度計を配置し、測定された湿度から水蒸
気量を計算するものがある。また、伝送路に１対の短ミ
リ波帯送信機と受信機とを対向配置したシステムも考え
られている。これは、短ミリ波帯の電波は水蒸気によっ
てその位相が変化されることを利用したものである。Generally, in a wireless communication system that uses high frequency waves such as microwaves, water vapor in the transmission path affects the propagation of radio waves, so it is required to measure the amount of water vapor in the transmission path. Conventionally, as this type of water vapor measurement system, there is a system in which a hygrometer is placed in a transmission line and the water vapor amount is calculated from the measured humidity. Furthermore, a system in which a pair of short millimeter wave band transmitter and receiver are disposed facing each other on a transmission path has also been considered. This takes advantage of the fact that the phase of radio waves in the short millimeter wave band is changed by water vapor.
上述した従来の測定システムのうち、前者の湿度計を用
いたものでは、伝送路中の１又は複数箇所の水蒸気量を
測定できるのにすぎない。また、後者のシステムにおい
ては、伝送路中において固定された一方向のみの水蒸気
量の測定しかできない。このため、従来のシステムでは
、伝送路を含む広い範囲にわたっての水蒸気量を測定す
ることが難しいという問題がある。Among the conventional measurement systems described above, the former one using a hygrometer can only measure the amount of water vapor at one or more locations in a transmission path. Furthermore, in the latter system, the amount of water vapor can only be measured in one fixed direction in the transmission path. For this reason, conventional systems have a problem in that it is difficult to measure the amount of water vapor over a wide range including the transmission line.
本発明は広い範囲にわたっての水蒸気量の測定を可能に
した水蒸気量測定システムを提供することを目的とする
。An object of the present invention is to provide a water vapor amount measuring system that allows the amount of water vapor to be measured over a wide range.
本発明の水蒸気量測定システムは、信号伝送路中に配置
した１個の送信機と、該信号伝送路の複数箇所に広く配
置されて前記送信機からの信号を夫々受信する複数個の
受信機と、これら受信機から出力される位相差信号に基
づいて各受信機と送信機との間における水蒸気量を出力
する信号処理回路とで構成している。The water vapor measurement system of the present invention includes one transmitter disposed in a signal transmission path, and a plurality of receivers widely disposed at multiple locations on the signal transmission path, each receiving a signal from the transmitter. and a signal processing circuit that outputs the amount of water vapor between each receiver and the transmitter based on the phase difference signals output from these receivers.
ここで、送信機は、基準信号発生器と、発生された基準
信号を短ミリ波帯信号に逓倍する短ミリ波帯信号発生器
と、前記基準信号と短ミリ波帯信号とを夫々送信するア
ンテナとを備えており、また各受信機は、前記基準信号
と短ミリ波帯信号を夫々受信するアンテナと、受信した
各信号の周波数を等しくさせる周波数変換器と、各信号
の位相差を検出して位相差信号を出力する位相比較器と
を備えている。Here, the transmitter includes a reference signal generator, a short millimeter wave band signal generator that multiplies the generated reference signal into a short millimeter wave band signal, and transmits the reference signal and the short millimeter wave band signal, respectively. Each receiver includes an antenna that receives the reference signal and the short millimeter wave band signal, a frequency converter that equalizes the frequency of each received signal, and a frequency converter that detects the phase difference between each signal. and a phase comparator that outputs a phase difference signal.
（作用〕
上述した構成では、１個の送信機から送信された信号を
、複数個の受信機で夫々受信して水蒸気量を測定でき、
送信機及び受信機を配設した広い範囲にわたる伝送路の
水蒸気量の測定が可能となる。(Function) In the above-described configuration, a signal transmitted from one transmitter can be received by a plurality of receivers to measure the amount of water vapor,
It becomes possible to measure the amount of water vapor in a transmission line over a wide range where transmitters and receivers are installed.
次に、本発明を図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.
第１図は本発明の一実施例のシステム構成図である。同
図（ａ）は送信部を示しており、ここに設けられる１個
の送信機１は基準信号発生器１１を備えている。この基
準信号発生器１１から出力される基準信号は、一方はそ
のままアンテナ１３八から送信される。また、他方は基
準信号の高調波を発生させる短ミリ波帯信号発生器１２
を通して短ミリ波帯信号としてアンテナ１３Ｂから送信
される。これらのアンテナ１３Ａ、１３Ｂは夫々同一方
向に向けられているが、付設されたアンテナ駆動制御部
１４によって送信方向が同時に変化される。送信方向を
変化させる構成としては、機械的にアンテナの方向を変
化させ、或いはアンテナをフェーズドアレイとしてアン
テナへ給電する信号位相を変えて送信方向を変化させる
構成がある。FIG. 1 is a system configuration diagram of an embodiment of the present invention. FIG. 2A shows a transmitting section, and one transmitter 1 provided here is equipped with a reference signal generator 11. One of the reference signals output from the reference signal generator 11 is transmitted as is from the antenna 138. The other is a short millimeter wave band signal generator 12 that generates harmonics of the reference signal.
is transmitted from antenna 13B as a short millimeter wave band signal. Although these antennas 13A and 13B are oriented in the same direction, their transmission directions are simultaneously changed by an attached antenna drive control section 14. As a configuration for changing the transmission direction, there is a configuration in which the direction of the antenna is changed mechanically, or a configuration in which the antenna is configured as a phased array and the phase of a signal fed to the antenna is changed to change the transmission direction.
なお、前記アンテナ駆動制御部１４は、前記基準信号及
び短ミリ波帯信号の送信と同期して、その送信方向を時
分割で変化させるように構成している。Note that the antenna drive control section 14 is configured to change the transmission direction in a time-division manner in synchronization with the transmission of the reference signal and the short millimeter wave band signal.
同図（ｂ）は受信部を示しており、複数個、ここでは３
個の受信機２で構成している。各受信機２は、前記基準
信号及び短ミリ波帯信号を夫々受信するアンテナ２１Ａ
、２１Ｂを有しており、これらのアンテナより入力され
た信号を周波数変換器２２で周波数変換して夫々を同一
周波数とし、かつこれらの信号を位相比較器２３で比較
し、基準信号と短ミリ波帯信号の位相差を測定して位相
差信号を出力するように構成している。The same figure (b) shows a receiving section, in which there are multiple receivers, in this case 3 receivers.
It is composed of receivers 2. Each receiver 2 includes an antenna 21A that receives the reference signal and the short millimeter wave band signal, respectively.
. It is configured to measure the phase difference between waveband signals and output a phase difference signal.
そして、各受信機２から出力される位相差信号は、無線
或いは有線によって信号処理回路３に入力される。この
信号処理回路３では、基準信号が水蒸気の影響を殆ど受
けず、短ミリ波帯信号が水蒸気の影響を受けてその位相
が変化されるという特性の相違を利用して、各受信機２
からの位相差信号を用いて各受信機における測定水蒸気
量を算出する。これにより、送信機１と各受信機２とを
結ぶ領域の水蒸気量が時分割的に測定でき、この結果送
信機１及び各受信機２を含む広い範囲における各伝搬中
の水蒸気量を測定することが可能となる。The phase difference signals output from each receiver 2 are input to the signal processing circuit 3 via wireless or wire. In this signal processing circuit 3, each receiver 2 takes advantage of the difference in characteristics that the reference signal is hardly affected by water vapor, and the short millimeter wave band signal is affected by water vapor and its phase is changed.
The amount of water vapor measured at each receiver is calculated using the phase difference signal from the receiver. As a result, the amount of water vapor in the area connecting the transmitter 1 and each receiver 2 can be measured in a time-division manner, and as a result, the amount of water vapor during each propagation can be measured in a wide range including the transmitter 1 and each receiver 2. becomes possible.
なお、前記実施例では送信機の送信方向を時分割で変化
させる方式を説明したが、アンテナをマルチビームアン
テナにすれば、送信方向を時分割で変化させる必要はな
い。In the above embodiment, a method was described in which the transmission direction of the transmitter is changed in a time-division manner, but if the antenna is a multi-beam antenna, there is no need to change the transmission direction in a time-division manner.
以上説明したように本発明は、基準信号と短ミリ波帯信
号を夫々送信する１個の送信機と、複数箇所に広く配置
されて送信機からの信号を夫々受信する複数個の受信機
とでシステムを構成し、各受信機の夫々の受信信号で送
信機との間の水蒸気量を測定しているので、これら送信
機及び受信機を配設した広い範囲にわたって水蒸気量を
測定することができる効果がある。As explained above, the present invention includes one transmitter that transmits a reference signal and a short millimeter wave band signal, and a plurality of receivers that are widely disposed at multiple locations and receive signals from the transmitter. Since the system is configured with a system that measures the amount of water vapor between the receiver and the transmitter using the received signal of each receiver, it is possible to measure the amount of water vapor over a wide area where these transmitters and receivers are installed. There is an effect that can be done.
第１図は本発明の一実施例を示すシステム構成図であり
、同図（ａ）は送信部、同図（ｂ）は受信部を夫々示し
ている。
１・・・送信機、２・・・受信機、３・・・信号処理回
路、１１・・・基準信号発生器、１２・・・短ミリ波帯
信号発生器、１３Ａ、１３Ｂ・・・アンテナ、１４・・
・アンテナ駆動制御部、２１Ａ、２１Ｂ・・・アンテナ
、２２・・・周波数変換器、２３・・・位相比較器。FIG. 1 is a system configuration diagram showing an embodiment of the present invention, in which (a) shows a transmitting section and (b) shows a receiving section. DESCRIPTION OF SYMBOLS 1... Transmitter, 2... Receiver, 3... Signal processing circuit, 11... Reference signal generator, 12... Short millimeter wave band signal generator, 13A, 13B... Antenna , 14...
- Antenna drive control unit, 21A, 21B... antenna, 22... frequency converter, 23... phase comparator.
Claims (1)
送路の複数箇所に広く配置されて前記送信機からの信号
を夫々受信する複数個の受信機と、これら受信機から出
力される位相差信号に基づいて各受信機と送信機との間
における水蒸気量を出力する信号処理回路とを備え、前
記送信機は、基準信号発生器と、発生された基準信号を
短ミリ波帯信号に逓倍する短ミリ波帯信号発生器と、前
記基準信号と短ミリ波帯信号とを夫々送信するアンテナ
とを備え、前記受信機は、前記基準信号と短ミリ波帯信
号を夫々受信するアンテナと、受信した各信号の周波数
を等しくさせる周波数変換器と、各信号の位相差を検出
して位相差信号を出力する位相比較器とを備えることを
特徴とする水蒸気量測定システム。1. One transmitter placed in a signal transmission path, a plurality of receivers widely placed at multiple locations on the signal transmission path to receive signals from the transmitter, and outputs from these receivers. and a signal processing circuit that outputs the amount of water vapor between each receiver and the transmitter based on the phase difference signal generated, and the transmitter includes a reference signal generator and a short millimeter wave The receiver includes a short millimeter wave band signal generator that multiplies a band signal, and an antenna that transmits the reference signal and the short millimeter wave band signal, respectively, and the receiver receives the reference signal and the short millimeter wave band signal, respectively. 1. A water vapor amount measuring system comprising: a frequency converter that equalizes the frequency of each received signal; and a phase comparator that detects a phase difference between each signal and outputs a phase difference signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10060389A JPH02280082A (en) | 1989-04-20 | 1989-04-20 | Water vapor content measuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10060389A JPH02280082A (en) | 1989-04-20 | 1989-04-20 | Water vapor content measuring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02280082A true JPH02280082A (en) | 1990-11-16 |
Family
ID=14278441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10060389A Pending JPH02280082A (en) | 1989-04-20 | 1989-04-20 | Water vapor content measuring system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02280082A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013224884A (en) * | 2012-04-23 | 2013-10-31 | Japan Radio Co Ltd | Water vapor observation device and meteorological radar |
-
1989
- 1989-04-20 JP JP10060389A patent/JPH02280082A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013224884A (en) * | 2012-04-23 | 2013-10-31 | Japan Radio Co Ltd | Water vapor observation device and meteorological radar |
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