JPH0498179A - Radar equipment - Google Patents

Radar equipment

Info

Publication number
JPH0498179A
JPH0498179A JP2216115A JP21611590A JPH0498179A JP H0498179 A JPH0498179 A JP H0498179A JP 2216115 A JP2216115 A JP 2216115A JP 21611590 A JP21611590 A JP 21611590A JP H0498179 A JPH0498179 A JP H0498179A
Authority
JP
Japan
Prior art keywords
display
pulse width
receiver
distance ranges
video
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
Application number
JP2216115A
Other languages
Japanese (ja)
Inventor
Takeshi Abe
武司 阿部
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Japan Radio Co Ltd
Original Assignee
Japan Radio Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Japan Radio Co Ltd filed Critical Japan Radio Co Ltd
Priority to JP2216115A priority Critical patent/JPH0498179A/en
Publication of JPH0498179A publication Critical patent/JPH0498179A/en
Pending legal-status Critical Current

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  • Radar Systems Or Details Thereof (AREA)

Abstract

PURPOSE:To display more than two distance ranges, far and close, in a signal display for observing them simultaneously by transmitting microwaves according to transmission pulse sequence selected as two distance ranges or more. CONSTITUTION:A transmission control signal St and a band changing signal Sr are formed by a control circuit 32 according to two display distance ranges or more designated by a radar designator 30 and sent to a transmitter 20 and a receiver 22 of a radar transmitter/receiver 10. For a transmission pulse width, a narrow pulse width and a wide pulse width are repeatedly alternately emitted. A reflected wave from a target around its own station is received by the receiver 22 in a narrow band width for the wide pulse width, and in a wide band width for the narrow pulse width. An output of the receiver 22 is sent to video processing circuits 36 and 38 to be circuit processed corresponding to the pulse width and transferred to a video memory 40 to be displayed in a display 42. More than two distance ranges can thus be displayed in a signal display simultaneously.

Description

【発明の詳細な説明】 [産業上の利用分野] 本発明はマイクロ波を発射し、自船(または自局)の周
辺の物標からの反射を検知し、指示機上に表示するレー
ダ装置に関する。
[Detailed Description of the Invention] [Industrial Application Field] The present invention is a radar device that emits microwaves, detects reflections from targets around its own ship (or own station), and displays the results on an indicator. Regarding.

[従来の技術] 従来、この種の装置は、一つの表示器上に一つの距離範
囲の映像を表示するように構成されており、操作により
近距離から遠距離を切換表示していたので、同時に近距
離と遠距離とを確認する場合には、2基のレーダ装置を
装備するか、スレーブインジケータを装備する必要があ
った。
[Prior Art] Conventionally, this type of device was configured to display an image of one distance range on one display, and the display was switched from short distance to long distance by operation. In order to check both short and long distances at the same time, it was necessary to equip two radar devices or a slave indicator.

[発明が解決しようとする課題] しかしながら、レーダ装置で自船(または自局)の周辺
を検知する時、特に、夜間や雨、霧、雪等で目視ができ
ない場合、自分に近い所(他船の状況等)と比較的遠距
離(海岸線等)とを同時に連続的に最適画面で観測する
必要があるという問題点があり、レーダを2基装備でき
ない小型船でも同様である。
[Problem to be solved by the invention] However, when detecting the surroundings of own ship (or own station) using a radar device, especially when visual observation is not possible at night or due to rain, fog, snow, etc. There is a problem in that it is necessary to simultaneously and continuously observe the situation of the ship, etc.) and a relatively long distance (coastline, etc.) on an optimal screen, and this also applies to small ships that cannot be equipped with two radars.

また、スレーブインジケータを装備しても該スレーブイ
ンジケータの送信パルス幅は一つのレーダで一つのパル
ス幅に固定されるため、表示距離に最適な表現ができな
い問題がある。
Further, even if a slave indicator is installed, the transmission pulse width of the slave indicator is fixed to one pulse width for one radar, so there is a problem that it is not possible to optimally express the display distance.

本発明は一つの表示器上に遠近二つ以上の距離範囲を表
示し、同時に観測できるレーダ装置を提供することを目
的とする。
An object of the present invention is to provide a radar device that can display two or more distance ranges, near and far, on one display and observe them simultaneously.

[課題を解決するための手段] 前記の課題を解決するために、本発明のレーダ装置は、 指定された少なくとも2以上の距離範囲に従い、選定さ
れた送信パルスシーケンスで送信する送信機と、 前記送信パルスシーケンスに対応して帯域幅を切り換え
て受信する受信機と、 受信機から出力されるビデオ出力を各々指定された距離
範囲毎に信号処理を行う映像信号処理回路と、 映像信号処理された少なくとも二つ以上の距離範囲の映
像信号を座標変換器の出力に伴って格納するビデオメモ
リと、 ビデオメモリに格納された二つ以上の距離範囲の映像信
号を入力とする表示器とを備え、前記表示器上に選定さ
れた少なくとも二つ以上の距離範囲の画像を表示するこ
とを特徴とする。
[Means for Solving the Problems] In order to solve the above problems, the radar device of the present invention includes: a transmitter that transmits in a selected transmission pulse sequence according to at least two specified distance ranges; A receiver that switches the bandwidth according to the transmitted pulse sequence and receives the signal; a video signal processing circuit that processes the video output from the receiver for each specified distance range; comprising a video memory that stores video signals of at least two or more distance ranges along with the output of the coordinate converter; and a display that receives as input the video signals of the two or more distance ranges stored in the video memory, The present invention is characterized in that images of at least two or more selected distance ranges are displayed on the display.

[作用] 上記のように構成された本発明のレーダ装置では、指定
された少なくとも二つ以上の距離範囲に従い選定された
送信パルスシーケンスに従って動作する送信機からマイ
クロ波が送信される。送信されたマイクロ波は物標から
反射し受信機において受信される。受信機は受信に際し
送信パルスシーケンスに対応して帯域幅の切り換えを行
いながら受信し、受信機から出力されるビデオ出力に対
して信号処理が行われ、ビデオメモリに座標変換器の出
力に伴って格納され、該ビデオメモリに格納された映像
信号は読み出されて表示器に供給され、映像信号と対応
し、かつ二つ以上の距離範囲の画像が表示器上に表示さ
れる。
[Operation] In the radar device of the present invention configured as described above, microwaves are transmitted from a transmitter that operates according to a transmission pulse sequence selected according to at least two specified distance ranges. The transmitted microwave is reflected from the target object and received by the receiver. When receiving data, the receiver switches the bandwidth according to the transmitted pulse sequence. Signal processing is performed on the video output from the receiver, and data is stored in the video memory along with the output of the coordinate converter. The video signal stored in the video memory is read out and supplied to a display, and images of two or more distance ranges corresponding to the video signal are displayed on the display.

上記のように、帯域切り換えにより2以上の距離範囲の
画像が一つの表示器上に表示されるた必、レーダを2基
装備せずに、近距離と遠距離とを同時に連続的に観測す
ることができる。
As mentioned above, in order to display images from two or more distance ranges on one display by switching bands, it is necessary to simultaneously and continuously observe short and long distances without installing two radars. be able to.

[実施例] 次に、本発明に係る一つの表示器上に同時に二つ以上の
距離範囲を表示するレーダの実施例を、添付の図面を参
照しながら以下詳細に説明する。
[Embodiment] Next, an embodiment of a radar that simultaneously displays two or more distance ranges on one display according to the present invention will be described in detail with reference to the accompanying drawings.

第1図は構成を示すブロック図、第2図は動作時の表示
を説明する図、第3図は動作説明のためのタイミングを
表した図である。
FIG. 1 is a block diagram showing the configuration, FIG. 2 is a diagram explaining the display during operation, and FIG. 3 is a diagram showing the timing for explaining the operation.

第1図において、参照符号10はレーダの送受信機であ
り、空中線12と、モーフエンコーダ14と、送信機2
0と、受信機22とが設けられている。さらに、参照符
号30はレーダ指示機゛であり、制御回路32と座標変
換器34と、ビデオ処理回路36と、ビデオ処理回路3
8とビデオメモリ (記憶手段)40とラスクスキャン
型式の表示器42とを有している。
In FIG. 1, reference numeral 10 is a radar transceiver, which includes an antenna 12, a morph encoder 14, and a transmitter 2.
0 and a receiver 22 are provided. Furthermore, reference numeral 30 is a radar indicator, which includes a control circuit 32, a coordinate converter 34, a video processing circuit 36, and a video processing circuit 3.
8, a video memory (storage means) 40, and a rask scan type display 42.

次に、上記の構成における動作を説明する。Next, the operation in the above configuration will be explained.

レーダ指示機30の操作部で指定した二つ以上の表示距
離範囲に従って、制御回路32より送信制御信号Stと
帯域切換信号Srが作られ、レーダ送受信機10の送信
機20と受信機22に送られる。第3図に送信パルス幅
100と受信帯域制御信号102の時間的変化の一例を
示す。
A transmission control signal St and a band switching signal Sr are generated by the control circuit 32 according to two or more display distance ranges specified on the operation section of the radar indicator 30, and are sent to the transmitter 20 and receiver 22 of the radar transceiver 10. It will be done. FIG. 3 shows an example of temporal changes in the transmission pulse width 100 and the reception band control signal 102.

送信パルス幅100のNは狭いパルス幅、Wは広いパル
ス幅が交互に繰り返している。パルス幅の組み合わせに
よっては、Nが何個か続いた後でWが1個という場合も
ある。また、送信機20で送信されたマイクロ波は空中
線12により空間に放射される。この時、全方向を観測
するた約、空中線12はモータエンコーダ14により回
転しており、その方位は方位信号Sθとして座標変換器
34へ送られる。自局周辺の物標より反射してきたマイ
クロ波は空中線12より受信機22へ入り増幅される。
N of the transmission pulse width 100 is a narrow pulse width, and W is a wide pulse width, which are alternately repeated. Depending on the combination of pulse widths, there may be one W after several N. Furthermore, the microwaves transmitted by the transmitter 20 are radiated into space by the antenna 12. At this time, in order to observe in all directions, the antenna 12 is rotated by the motor encoder 14, and its orientation is sent to the coordinate converter 34 as an orientation signal Sθ. Microwaves reflected from targets around the station enter the receiver 22 via the antenna 12 and are amplified.

この時、受信帯域は受信帯域制御信号102のタイミン
グのように切り換えが行われている。NBは狭帯域、W
Bは広帯域であり、広いパルス幅Wの時は狭い帯域幅N
Bで、狭いパルス幅Nの時は広い帯域幅WBで受信され
る。また、パルス幅の組み合わせで中間のパルス幅と広
いパルス幅の場合には帯域切り換えを行わず、狭いパル
ス幅のままで受信されることもある。
At this time, the reception band is switched according to the timing of the reception band control signal 102. NB is narrowband, W
B is a wide band, and when the pulse width W is wide, the bandwidth N is narrow.
B, when the pulse width N is narrow, it is received with a wide bandwidth WB. Furthermore, in the case of a combination of pulse widths, such as an intermediate pulse width and a wide pulse width, the band may not be switched and the signal may be received with the narrow pulse width as it is.

受信機22の出力はビデオ処理回路3Bとビデオ処理回
路38へ送られる。−例として、狭いパルス幅の受信ビ
デオ信号はビデオ処理回路36で、広いパルス幅の受信
ビデオ信号はビデオ処理回路38で処理され、−時的に
記憶された後、制御回路320制御タイミングによりビ
デオメモリ (記憶手段)40にデータを書き込むため
転送される。この時、ビデオメモリ40のアドレスは制
御回路32よりの距離信号および表示位置信号とモータ
エンコーダ14からの方位信号とにより、座標変換器3
4で発生させ、ビデオメモリ40への書き込みが行われ
る。ビデオメモリ40に書き込まれた映像情報はラスク
スキャン型式の表示器42のタイミングに合わせて読み
出され、表示器42に表示される。
The output of receiver 22 is sent to video processing circuit 3B and video processing circuit 38. - By way of example, a received video signal with a narrow pulse width is processed in a video processing circuit 36 and a received video signal with a wide pulse width is processed in a video processing circuit 38; The data is transferred to the memory (storage means) 40 for writing. At this time, the address of the video memory 40 is determined by the coordinate converter 3 based on the distance signal and display position signal from the control circuit 32 and the direction signal from the motor encoder 14.
4, and writing to the video memory 40 is performed. The video information written in the video memory 40 is read out in accordance with the timing of the display 42 of the rask scan type, and is displayed on the display 42.

ビデオ処理回路36およびビデオ処理回路38では、受
信ビデオ信号の処理ばかりでなく、表示画面上に必要な
各種マーカーや情報表示のための映像データを発生させ
、ビデオメモリ40に書き込む。
The video processing circuit 36 and the video processing circuit 38 not only process the received video signal, but also generate video data for displaying various markers and information necessary on the display screen, and write them into the video memory 40.

第2図に表示映像例50を示す。FIG. 2 shows an example display image 50.

左は6NMレンジの映像、右は3NMレンジの映像を表
示した例であるが、3NMは6NMとパルス幅を変えて
いるので、単に6NMの映像を2倍に拡大しているので
はな、<、高い分解能の映像を表示することができる。
The left image is an example of a 6NM range image, and the right image is an example of a 3NM range image, but the 3NM has a different pulse width than the 6NM, so I guess the 6NM image is simply enlarged by twice. , can display high resolution images.

[発明の効果] 以上のように、本発明に係るレーダ装置によれば、二つ
以上の距離範囲を同時に一つの表示器上に表示できるよ
うにしたため、自船(または自局)の近くを観測し他船
との位置関係を表示(衝突の防止)すると同時に、海岸
線等の航海情報を知ることができる。
[Effects of the Invention] As described above, according to the radar device according to the present invention, two or more distance ranges can be displayed on one display at the same time. While observing and displaying the positional relationship with other ships (preventing collisions), you can also obtain navigational information such as the coastline.

また、一つの距離範囲を連続的に観測しながら、他の距
離範囲の状況を切り換えて観測し、航海、操船に役立て
ることができる効果もある。
Another advantage is that while continuously observing one distance range, the situation in other distance ranges can be switched and observed, which can be useful for navigation and ship operation.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明に係るレーダ装置の構成を示すブロック
図、 第2図は第1図に示される実施例に係る動作時の表示を
説明する図、 第3図は第1図に示される実施例に係る動作説明のため
のタイミング図である。 0・・・レーダ送受信機 2・・・空中線 4・・・モータエンコーダ 0・・・送信機 2・・・受信機 0・・・レーダ指示機 2・・・制御回路 4・・・座標変換器 6・・・ビデオ処理回路 訃・・ビデオ処理回路 0・・・ビデオメモリ 2・・・表示器 θ・・・方位信号 t・・・送信制御信号 r・・・帯域切換信号
FIG. 1 is a block diagram showing the configuration of a radar device according to the present invention, FIG. 2 is a diagram illustrating the display during operation of the embodiment shown in FIG. 1, and FIG. 3 is the same as shown in FIG. 1. FIG. 3 is a timing chart for explaining the operation according to the embodiment. 0...Radar transceiver 2...Antenna 4...Motor encoder 0...Transmitter 2...Receiver 0...Radar indicator 2...Control circuit 4...Coordinate converter 6...Video processing circuit...Video processing circuit 0...Video memory 2...Display device θ...Direction signal t...Transmission control signal r...Band switching signal

Claims (1)

【特許請求の範囲】[Claims] (1)指定された少なくとも2以上の距離範囲に従い、
選定された送信パルスシーケンスで送信する送信機と、 前記送信パルスシーケンスに対応して帯域幅を切り換え
て受信する受信機と、 受信機から出力されるビデオ出力を各々指定された距離
範囲毎に信号処理を行う映像信号処理回路と、 映像信号処理された少なくとも二つ以上の距離範囲の映
像信号を座標変換器の出力に伴って格納するビデオメモ
リと、 ビデオメモリに格納された二つ以上の距離範囲の映像信
号を入力とする表示器とを備え、前記表示器上に選定さ
れた少なくとも二つ以上の距離範囲の画像を表示するこ
とを特徴とするレーダ装置。
(1) According to at least two or more specified distance ranges,
A transmitter that transmits with a selected transmission pulse sequence, a receiver that switches the bandwidth according to the transmission pulse sequence and receives the signal, and a video output from the receiver that transmits signals for each specified distance range. a video signal processing circuit that performs processing; a video memory that stores video signals of at least two distance ranges subjected to video signal processing along with the output of a coordinate converter; and two or more distance ranges stored in the video memory. What is claimed is: 1. A radar device comprising: a display device receiving a video signal of a range as input; and displaying images of at least two or more selected distance ranges on the display device.
JP2216115A 1990-08-15 1990-08-15 Radar equipment Pending JPH0498179A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2216115A JPH0498179A (en) 1990-08-15 1990-08-15 Radar equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2216115A JPH0498179A (en) 1990-08-15 1990-08-15 Radar equipment

Publications (1)

Publication Number Publication Date
JPH0498179A true JPH0498179A (en) 1992-03-30

Family

ID=16683481

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2216115A Pending JPH0498179A (en) 1990-08-15 1990-08-15 Radar equipment

Country Status (1)

Country Link
JP (1) JPH0498179A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000040994A1 (en) * 1999-01-07 2000-07-13 Kabushiki Kaisha Koden Seisakusho Radar device
JP2007298417A (en) * 2006-04-28 2007-11-15 Furuno Electric Co Ltd Radar system, and tuning processing method for the radar system
JP2007333482A (en) * 2006-06-13 2007-12-27 Furuno Electric Co Ltd Radar device, and radar image display method
US8624776B2 (en) 2007-08-31 2014-01-07 Raymarine Uk Limited Digital radar or sonar apparatus

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000040994A1 (en) * 1999-01-07 2000-07-13 Kabushiki Kaisha Koden Seisakusho Radar device
JP2007298417A (en) * 2006-04-28 2007-11-15 Furuno Electric Co Ltd Radar system, and tuning processing method for the radar system
US7746270B2 (en) 2006-04-28 2010-06-29 Furuno Electric Company Limited Radar apparatus and radar tuning method
JP2007333482A (en) * 2006-06-13 2007-12-27 Furuno Electric Co Ltd Radar device, and radar image display method
US7956798B2 (en) 2006-06-13 2011-06-07 Furuno Electric Company, Ltd Radar apparatus and radar picture display method
US8624776B2 (en) 2007-08-31 2014-01-07 Raymarine Uk Limited Digital radar or sonar apparatus
US9645229B2 (en) 2007-08-31 2017-05-09 FLIR Belgium BVBA Digital ranging systems and methods

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