JPS6118703B2 - - Google Patents
Info
- Publication number
- JPS6118703B2 JPS6118703B2 JP15023277A JP15023277A JPS6118703B2 JP S6118703 B2 JPS6118703 B2 JP S6118703B2 JP 15023277 A JP15023277 A JP 15023277A JP 15023277 A JP15023277 A JP 15023277A JP S6118703 B2 JPS6118703 B2 JP S6118703B2
- Authority
- JP
- Japan
- Prior art keywords
- transducer
- pressure gradient
- sound
- converters
- difference
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic or electromagnetic waves, or particle emission, not having a directional significance, are being received
- G01S3/80—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic or electromagnetic waves, or particle emission, not having a directional significance, are being received using ultrasonic, sonic or infrasonic waves
- G01S3/802—Systems for determining direction or deviation from predetermined direction
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Description
【発明の詳細な説明】
本発明はパツシブソーナー用の電気音響変換器
に関し、特に海峡や大陸棚等の浅深度且つ広領域
の海洋で使用するパツシブソーナーの方位測定用
電気音響変換器に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electroacoustic transducer for passive sonar, and more particularly to an electroacoustic transducer for azimuth measurement of passive sonar used in shallow depths and wide ocean areas such as straits and continental shelves.
従来、この種の電気音響変換器は低周波領域で
使用されるため垂直方向の指向性を鋭くすること
が難かしく、特に遠方の目標とする発音体を探知
する場合に直上の目標外の発音体が妨害となつ
た。 Conventionally, this type of electroacoustic transducer is used in the low frequency range, so it is difficult to sharpen the directivity in the vertical direction, especially when detecting a distant target sounding body. My body became a hindrance.
すなわち水平方向の方位測定用電気音響変換器
は水平方向に配置された２点間の音圧差により電
気信号を出力する一次の圧力傾度型変換器を直交
させて用い、一次の圧力傾度型変換器の受音方位
を決定するのに必要な位相を比較するための信号
を受音点の音圧に比例した電気信号を出力する、
いわゆる圧力型変換器から得ているため、圧力型
変換器が直上の妨害波を除けないというような欠
点があつた。 In other words, an electroacoustic transducer for horizontal direction measurement uses orthogonal first-order pressure gradient type transducers that output electrical signals based on the sound pressure difference between two points arranged in the horizontal direction. Outputs an electrical signal proportional to the sound pressure at the sound receiving point, which is used to compare the phases necessary to determine the sound receiving direction.
Because it is obtained from a so-called pressure transducer, it has the disadvantage that the pressure transducer cannot remove interference waves directly above it.
本発明は一次の圧力傾度型変換器の受音方位を
決定するに必要な基準信号を二次の圧力傾度型変
換器、すなわち、２個の一次の圧力傾度型変換器
の個々の信号の差が出力される変換器から得るこ
とにより上記欠点を除去し、浅深度の海洋で使用
するパツシブソーナーに適した方位測定用電気音
響変換器を提供するものである。 The present invention converts the reference signal necessary for determining the sound reception direction of a first-order pressure gradient transducer into a second-order pressure gradient transducer, that is, the difference between the individual signals of two first-order pressure gradient transducers. The present invention is to provide an electroacoustic transducer for azimuth measurement that is suitable for passive sonar used in shallow oceans by eliminating the above-mentioned drawbacks.
今、音波の到来する場、すなわち音場の音圧を
Ｐとし、音波がｘ軸とθの角度をもつ方向から到
来する場合、第５図に示すようにx1とx2の２点の
音圧はx1を基準として（ｘ＝０として）夫々
P1＝P0e-j(〓t-k Now, let the sound pressure of the field where the sound wave arrives, that is, the sound field, be P, and if the sound wave comes from a direction that has an angle of θ with the x-axis, the two points x 1 and x 2 as shown in Figure 5. The sound pressure is based on x 1 (x = 0), respectively P 1 = P 0 e -j( 〓 tk
Claims (1)
出力する電気音響変換器において、動電的に電気
―機械変換する振動子を用いた１個の第１の変換
器とその前後に静電的に電気―機械変換する振動
子を用いた２個の第２の変換器を直線状に配置
し、前期２個の第２の変換器を個々の信号の差が
出力されるように接続した第１の直線状変換器群
と、これと直交し、第１の直線状変換器群と同じ
構成の第２の直線状変換器群とから成り、直交す
る二方向の各一次圧力傾度型信号と二次圧力傾度
型信号とから方位を測定することを特徴とする方
位測定用電気音響変換器。1 In an electroacoustic transducer that outputs an electrical signal by being driven by the sound pressure difference between two points, there is one first transducer using a vibrator that performs electrodynamic electro-mechanical conversion, and an electrostatic transducer before and after it. Two second converters using oscillators that perform electrical-to-mechanical conversion were arranged in a straight line, and the first two second converters were connected so that the difference between the individual signals was output. Consisting of a first linear transducer group and a second linear transducer group orthogonal thereto and having the same configuration as the first linear transducer group, each primary pressure gradient type signal in two orthogonal directions and a secondary pressure gradient type signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15023277A JPS5482262A (en) | 1977-12-13 | 1977-12-13 | Electro-acoustic transducer for bearing measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15023277A JPS5482262A (en) | 1977-12-13 | 1977-12-13 | Electro-acoustic transducer for bearing measurement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5482262A JPS5482262A (en) | 1979-06-30 |
| JPS6118703B2 true JPS6118703B2 (en) | 1986-05-14 |
Family
ID=15492429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15023277A Granted JPS5482262A (en) | 1977-12-13 | 1977-12-13 | Electro-acoustic transducer for bearing measurement |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5482262A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4011395B2 (en) * | 2002-05-10 | 2007-11-21 | 株式会社ケンウッド | Microphone device and sound source direction determination device |
-
1977
- 1977-12-13 JP JP15023277A patent/JPS5482262A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5482262A (en) | 1979-06-30 |
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