JPH03122584A - Radar rhi scanning apparatus - Google Patents
Radar rhi scanning apparatusInfo
- Publication number
- JPH03122584A JPH03122584A JP1260738A JP26073889A JPH03122584A JP H03122584 A JPH03122584 A JP H03122584A JP 1260738 A JP1260738 A JP 1260738A JP 26073889 A JP26073889 A JP 26073889A JP H03122584 A JPH03122584 A JP H03122584A
- Authority
- JP
- Japan
- Prior art keywords
- elevation angle
- elevation
- scanning
- random
- radar
- 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
- 230000002194 synthesizing effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000005315 distribution function Methods 0.000 description 2
- 238000002592 echocardiography Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
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
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、気象レーダアンテナの走査方式に関し、特
にレーダアンテナを仰角方向に次々に変化させて垂直方
向の観測を行うレーダＲＨＩ走査装置に関するものであ
る。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a scanning method for a weather radar antenna, and more particularly to a radar RHI scanning device that performs observation in the vertical direction by successively changing the elevation angle of the radar antenna. It is.
第５図は従来の同種装置のアンテナ走査方式の一例を示
す０図において、ｌは距離方向目盛、２は高度方向目盛
、３は仰角走査、４は時間軸、５は仰角目盛、６は仰角
変化命令を示す。FIG. 5 shows an example of the antenna scanning method of a conventional similar device, in which l is a scale in the distance direction, 2 is a scale in the altitude direction, 3 is an elevation scan, 4 is a time axis, 5 is an elevation scale, and 6 is an elevation angle. Indicates a change command.
次に動作について説明する。従来方式においては、仰角
走査は、逐次的に単調増加又は単調減少で出される仰角
変化命令６に対応して、仰角走査３に示す様な単調な形
で仰角変化が行われていた。Next, the operation will be explained. In the conventional system, the elevation angle scan was performed in a monotonous manner as shown in the elevation angle scan 3 in response to an elevation angle change command 6 issued in a monotonous increasing or decreasing manner.
これは、垂直方向のエコー分布をもれなく観測するとい
う運用上の要求と、機械走査等を主とする比較的簡単な
アンテナビーム走査で済むという利点から利用されてき
たものである。This has been used because of the operational requirement to observe the echo distribution in the vertical direction without exception, and the advantage that relatively simple antenna beam scanning, mainly mechanical scanning, is sufficient.
従来のレーダＲＨＩ走査方式は以上のように構成されて
いるので、垂直的な分布を連続的にくまなく走査できる
利点はあるものの、高仰角から低仰角までの走査に時間
を要するものであった。例えば片道の走査で通常１０〜
２０秒を要するため、垂直的なエコー分布の観測に同時
性が得られず、同−時間内でのエコー分布把握が困難で
あるという問題点があった。The conventional radar RHI scanning method is configured as described above, and although it has the advantage of being able to continuously and thoroughly scan the vertical distribution, it takes time to scan from high elevation angles to low elevation angles. . For example, a one-way scan usually costs 10~
Since it takes 20 seconds, there is a problem in that the vertical echo distribution cannot be observed simultaneously and it is difficult to grasp the echo distribution within the same time period.
この発明は、上記のような従来のものの問題点に鑑みて
なされたもので、高仰角と低仰角の観測に時間ずれが生
じて同時性が得られないという、従来方式の問題点を解
決できるレーダＲＨＩ走査装置を得ることを目的として
いる。This invention was made in view of the problems of the conventional method as described above, and can solve the problem of the conventional method in which simultaneity cannot be obtained due to a time lag between observations at high and low elevation angles. The aim is to obtain a radar RHI scanning device.
この発明に係るレーダＲＨＩ走査装置は、アンテナの仰
角方向ビーム走査を電子的にかつランダムに行うように
したものである。The radar RHI scanning device according to the present invention scans the beam in the elevation angle direction of the antenna electronically and randomly.
この発明においては、アンテナ仰角走査は、ビーム仰角
をランダムに選択するようにしたので、一定時間後にこ
れらの各仰角の観測結果を合成することにより、垂直の
エコー分布全体を等価的に同時性を持って観測でき、等
価的な同時性を得ることができる。In this invention, the antenna elevation angle scanning is performed by randomly selecting beam elevation angles, so by combining the observation results for each elevation angle after a certain period of time, the entire vertical echo distribution can be equivalently synchronized. can be observed with equivalent simultaneity.
以下、この発明の一実施例を図について説明する。まず
、本発明の一実施例のハードウェア構成の説明に先立っ
て、その走査方式について説明する。An embodiment of the present invention will be described below with reference to the drawings. First, prior to explaining the hardware configuration of an embodiment of the present invention, its scanning method will be explained.
第２図は本発明の一実施例によるレーダＲＨＩ走査装置
における、仰角走査を時間軸上でランダムに行う様子を
示すもので、図中、４は時間軸、５は仰角目盛、７はア
ンテナビーム仰角を示す。FIG. 2 shows how elevation angle scanning is performed randomly on the time axis in a radar RHI scanning device according to an embodiment of the present invention. In the figure, 4 is the time axis, 5 is the elevation angle scale, and 7 is the antenna beam. Indicates the angle of elevation.
第１図はこの走査方式を実現する、本発明の一実施例に
よるレーダＲＨＩ走査装置のシステムブロック図を示す
。図中、８はアンテナ部、９は仰角ビーム制御器、１０
はランダム信号発生器を示す。FIG. 1 shows a system block diagram of a radar RHI scanning device according to an embodiment of the present invention that implements this scanning method. In the figure, 8 is an antenna part, 9 is an elevation beam controller, 10
indicates a random signal generator.
次に動作について説明する。アンテナ部８は仰角方向に
電子走査可能なフェーズド・アレイ・アンテナで、これ
に対する仰角変化命令は仰角ビーム制御器９で形成され
る。即ち、仰角ビーム制御器９では、アレイアンテナの
個々の素子の位相制御情報を生成し、これを各素子に印
加する。これによってアレイアンテナの仰角ビーム方向
が確定する。Next, the operation will be explained. The antenna section 8 is a phased array antenna that can be electronically scanned in the elevation direction, and an elevation angle change command for this is generated by an elevation angle beam controller 9. That is, the elevation beam controller 9 generates phase control information for each element of the array antenna and applies this to each element. This determines the elevation beam direction of the array antenna.
ランダム信号発生器１０は仰角ビーム制御器９が方位法
めを行うための仰角情報そのものを与えるものである。The random signal generator 10 provides the elevation angle information itself for the elevation angle beam controller 9 to perform azimuth determination.
即ち、走査仰角範囲内の予め設定された２０〜３０種の
プリセット仰角から仰角ビーム制御器９に印加する仰角
情報をランダムに抽出するための回路である。That is, it is a circuit for randomly extracting elevation angle information to be applied to the elevation beam controller 9 from 20 to 30 kinds of preset elevation angles set in advance within the scanning elevation angle range.
ランダム信号発生器１０から時間的にランダムな仰角情
報を発生することにより、仰角走査は従来の仰角変化命
令６に示すような単調増加又は単調減少の走査ではなく
、仰角７に示すようなランダム走査を行うことになり、
例えば最高仰角のあと直ちに最低仰角に移ることもある
。従って、−定時間後にこれらの各仰角の観測結果を合
成することにより、垂直のエコー分布全体を等価的に同
時性を持って観測でき、ある時間帯をとってみれば結果
として所定仰角範囲を均等に走査したものと等価の観測
結果が得られることになる。By generating temporally random elevation angle information from the random signal generator 10, the elevation angle scan is not a monotonically increasing or monotonically decreasing scan as shown in the conventional elevation angle change command 6, but a random scan as shown in the elevation angle 7. will be done,
For example, the highest elevation angle may be immediately followed by the lowest elevation angle. Therefore, by combining the observation results for each elevation angle after a certain period of time, the entire vertical echo distribution can be observed equivalently and simultaneously. Observation results equivalent to uniform scanning will be obtained.
このように、本実施例では仰角方向の走査を電子化し、
かつその仰角走査をランダムに行なうようにしたので、
従来の機械的走査を行なうものでは得られなかった、全
仰角を等価的に同時に観測することができる。In this way, in this embodiment, the scanning in the elevation direction is electronicized,
And since the elevation angle scanning was done randomly,
All elevation angles can be equivalently observed simultaneously, which was not possible with conventional mechanical scanning.
なお、上記実施例では所定仰角範囲をランダム信号発生
器１０が生成する仰角指定情報に基づいて全くランダム
に走査する例を示しているが、−方、この仰角指定を全
くランダムではなく、所定の分布関数に従った重み付け
を行って実施することも可能である。この他の実施例を
第２図に示す。In addition, in the above embodiment, an example is shown in which the predetermined elevation angle range is scanned completely randomly based on the elevation angle designation information generated by the random signal generator 10. It is also possible to perform weighting according to a distribution function. Another embodiment is shown in FIG.
同図は観測対象エコー（例えば雷雲、氷雨等）の垂直方
向の分布特性を考慮した分布信号発生器ｌｌを設け、こ
の出力とランダム信号発生器１０の出力を乗算器で乗算
１２し、重み付けするシステムのブロック構成を示して
いる。In the figure, a distributed signal generator 11 is provided that takes into account the vertical distribution characteristics of the observed echoes (for example, thunderclouds, freezing rain, etc.), and the output of this signal generator 11 is multiplied by the output of the random signal generator 10 using a multiplier 12 and weighted. Shows the block configuration of the system.
また、仰角走査範囲を制限し、より効率よく走査を行う
実施例も考えられる。即ち予め設定された仰角範囲のう
ち、実エコー観測結果から得られる上限、下限を動的に
設定していくものである。Further, an embodiment may be considered in which the elevation angle scanning range is limited to perform scanning more efficiently. That is, the upper and lower limits obtained from the actual echo observation results are dynamically set within the preset elevation angle range.
第３図にこの方式の構成例を示す。図中、１３は走査範
囲に制限を加えるエコー強度信号判定器を、また１４は
ゲート回路を示す。FIG. 3 shows an example of the configuration of this system. In the figure, 13 indicates an echo intensity signal determiner that limits the scanning range, and 14 indicates a gate circuit.
〔発明の効果］
以上のように、この発明に係るレーダＲＨＩ走査装置に
よれば、仰角走査を電子的かつランダムに行うように構
成したので、垂直分布観測を行う上で時間的な偏りを除
くことが可能になり、等価的に観測時間の同時性が実現
できた。即ち、高仰角で得た観測結果も低仰角で得た観
測結果も時間軸上でほぼ同一時間帯のものと見なすこと
が可能になるという効果が得られる。[Effects of the Invention] As described above, according to the radar RHI scanning device according to the present invention, since the elevation scanning is performed electronically and randomly, it is possible to eliminate temporal bias when performing vertical distribution observation. This made it possible to equivalently achieve simultaneous observation times. That is, it is possible to obtain the effect that observation results obtained at high elevation angles and observation results obtained at low elevation angles can be regarded as being in approximately the same time zone on the time axis.
第１図は本発明の一実施例のブロック構成例を示す図で
ある。第２図及び第３図は本発明の他の実施例を示す図
であり、第２図は仰角走査に重み付けを行う実施例を示
す図、第３図は動的な仰角範囲設定を行う実施例を示す
図である。第４図はこの発明の一実施例によるレーダＲ
ＨＩ走査方式のアンテナ仰角走査例を示す図である。第
５図は従来方式によるアンテナ仰角走査例を示す図であ
る。
図において、１は距離方向目盛、２は高度方向目盛、３
は仰角走査、４は時間軸、５は仰角目盛、６は仰角変化
命令、７はアンテナビーム仰角、８はアンテナ部、９は
仰角ビーム制御器、１０はランダム信号発生器、１１は
分布関数発生器、１２は乗算器、１３はエコー強度信号
判定器、１４はゲート回路である。
なお図中同一符号は同−又は相当部分を示す。FIG. 1 is a diagram showing an example of a block configuration of an embodiment of the present invention. 2 and 3 are diagrams showing other embodiments of the present invention, in which FIG. 2 shows an embodiment in which elevation angle scanning is weighted, and FIG. 3 shows an embodiment in which dynamic elevation angle range setting is performed. It is a figure which shows an example. FIG. 4 shows a radar R according to an embodiment of the present invention.
It is a figure which shows the antenna elevation angle scanning example of HI scanning method. FIG. 5 is a diagram showing an example of antenna elevation angle scanning according to the conventional method. In the figure, 1 is a scale in the distance direction, 2 is a scale in the altitude direction, and 3 is a scale in the altitude direction.
is elevation angle scanning, 4 is time axis, 5 is elevation scale, 6 is elevation change command, 7 is antenna beam elevation angle, 8 is antenna section, 9 is elevation beam controller, 10 is random signal generator, 11 is distribution function generation 12 is a multiplier, 13 is an echo intensity signal determiner, and 14 is a gate circuit. Note that the same reference numerals in the figures indicate the same or equivalent parts.
Claims (1)
向の観測を行うＲＨＩ（ＲａｎｇｅＨｅｉｇｈｔＩｎｄ
ｉｃａｔｏｒ）走査装置において、 少なくとも仰角方向の電子走査が可能なアンテナ部と、 該アンテナ部の仰角変化命令を発生する制御部と、 時間的にランダムな仰角情報を発生して上記制御部に与
えるランダム信号発生器とを備えたことを特徴とするレ
ーダＲＨＩ走査装置。(1) RHI (RangeHeightInd), which performs vertical observation by changing the elevation angle of the radar antenna one after another.
icator) scanning device, an antenna section capable of electronic scanning at least in the direction of elevation, a control section that generates an command to change the elevation angle of the antenna section, and a random temporally random elevation angle information generated and given to the control section. A radar RHI scanning device comprising a signal generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1260738A JPH03122584A (en) | 1989-10-05 | 1989-10-05 | Radar rhi scanning apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1260738A JPH03122584A (en) | 1989-10-05 | 1989-10-05 | Radar rhi scanning apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03122584A true JPH03122584A (en) | 1991-05-24 |
Family
ID=17352066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1260738A Pending JPH03122584A (en) | 1989-10-05 | 1989-10-05 | Radar rhi scanning apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03122584A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011203109A (en) * | 2010-03-25 | 2011-10-13 | Toshiba Corp | Weather radar apparatus and weather observation method |
| JP2016029363A (en) * | 2014-07-24 | 2016-03-03 | 株式会社ユーシン | Radio sensing device, and radar system |
-
1989
- 1989-10-05 JP JP1260738A patent/JPH03122584A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011203109A (en) * | 2010-03-25 | 2011-10-13 | Toshiba Corp | Weather radar apparatus and weather observation method |
| JP2016029363A (en) * | 2014-07-24 | 2016-03-03 | 株式会社ユーシン | Radio sensing device, and radar system |
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