JPH01253676A - Sonar phasing circuit - Google Patents

Abstract

PURPOSE:To perform a phasing to synthesize a desired wave receiving directivity in an azimuth range of l<0>, by arranging n channels of l<0> range delay phasing devices, phasing controllers, channel selectors and selection controllers. CONSTITUTION:N channels of l<0> range delay phasing devices 1(1-1-1-n) have (n) delay values for adjusting phase necessary for performing a phasing of (n) staves of transmitter/receivers arranged in a bearing of l<0> to be applied to a transmitting/receiving input. Receiving bearing information, a phasing controller 3 controls and sets the delay value for the phasing devices 1. Channel selectors 2(2-1-2-n) connect the delay phasing devices 1 to a cylinder array type transmitter/receiver being ready for phasing corresponding to a bearing to be directed to each of desired adjacent l<0>/n phase shifters. Receiving information on directivity bearing, selection controllers 4 connect the phasing devices 1 to adjacent (n) stave transmitters in an initialized azimuth range in the phasing within l<0> and when a turning is made in a bearing exceeding l<0>, the controllers do them to (n) staves of transmitter/receivers containing those shifted by one step in the direction of turning. This enables a sonar phasing with a simple switching construction.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a sonar phasing circuit, and more particularly to a sonar phasing circuit that utilizes a cylindrical array type space receiver.

[Conventional technology]

A sonar phasing circuit for forming a desired transmission/reception directivity using a cylindrical array (type) X receiver is well known.

FIG. 2 is a block diagram showing a typical t74 configuration of a conventional sonar phase connection circuit, taking as an example the case of forming a traveling wave directivity. The sonar phasing circuit shown in FIG.
It is comprised of C°/n width delay phasing devices 5-1 to 5-n, n channel switchers 6-1 to 6-n, a phasing controller 7, and a channel switching controller 8.

In order to impart desired directivity to the transmission signals of the sonar device transmitted from the cylindrical array type transmitter, phasing processing is basically used. This process is based on the difference in the propagation path of the sound wave depending on the arrangement conditions for m-staple transmitters arranged in a cylindrical shape over 360° and n-staple transmitters in the azimuth range of Qo to be phased. Shape ink (sba c3 i n
g), and by adjusting the delay amount to apply a phasing amount including fading (f a d j, ng ) that weights the channel to the shape ink in order to obtain the desired directivity.

FIG. 4 is an explanatory diagram of conventional phasing. Referring to FIG. 4, the case of one pass will be explained as an example.

Figure 4 shows a case in which the output from the phasing process is applied to the transmitter over the azimuth angle range of ρ° from stay 71 to stave 1 among all the ffl staves, and the transmission directivity is synthesized in the direction of the arrow. There is.

To change the direction of the directivity formed by such phasing, 1. It is possible to set the azimuth angle shift of the step number within Q / n ° by using a phasing circuit,
! If it exceeds 2/n', the transmitter channel is shifted and the desired pointing is achieved by matching these two azimuth angle settings.

In FIG. 2, ]] ρ, -'n' width delay phasers 5-1 to 5-n are controlled by a phasing controller 7 that receives a phasing azimuth signal 102 specifying a desired azimuth. The channel switchers 6-1 to 6-1] are controlled to share the delay phasing amount within n°, and when the phasing amount exceeds p/r+°, the channel switching devices The channel switching controller 8 switches the staves of the device so as to advance one by one. In this case, the channel switchers 6-]] to 6-1 are switched to select adjacent n channels from the transmitters of all m staves in accordance with the specified direction of the phasing direction signal 102, and transmit Signal power 1
0] is applied to the transmitter.

The above description takes as an example the case of forming the transmitting and receiving directivity, but phasing in the case of forming the receiving directivity can also be easily carried out under the conditions of input from an m-staple receiver.

[Problem to be solved by the invention]

In the conventional phasing circuit described above, the phasing amount of each channel is limited to a value within ρ/n° with respect to the phasing direction, so the inverse phasing direction is set while sequentially switching each phasing channel. There must be. Therefore, channel switching becomes complicated, and in either case, the number of switching operations becomes enormous.

It is an object of the present invention to provide a sonar phasing circuit which eliminates the disadvantages of double connection and greatly simplifies the configuration.

[Means to solve the problem]

The circuit of the present invention delay-adjusts the phase of the transmitting and receiving outputs applied to the transducer of the phase 1 (1 contact r) stave (stan1e) of the cylindrical array type transducer and adjusts the phase in the azimuth range of ρ°. In a sonar phasing circuit that performs phasing to synthesize the desired transmitting and receiving wave directivity, there are n phase adjustments necessary for phasing each of the n stave transducers arranged in the azimuth range of ρ°. 1) the lo of the channel, the width delay phasing device, and the ρ of the n channel while receiving information regarding the direction to be directed by phasing. a phasing controller that controls the delay phasing amount to be set for each of the width delay phasing devices; an n-channel channel switcher connected to each of the adjacent n-channel transducer staves so as to enable phasing in accordance with the azimuth to which the transducer staves should be oriented; and information regarding the azimuth to be oriented by said phasing. For phasing in the azimuth angle range within the above l° while receiving
When connecting the width delay phasing device to the adjacent transducer of the n staves in the azimuth range of ρ° at the initial position and phasing beyond the azimuth range of lo to rotationally shift the pointing azimuth. 1, which is configured with a channel switching controller that controls switching so as to be connected to n stave transducers including transducers that are stepped one by one in the turning shift direction. [Example 1] ] Next, the present invention will be described in detail with reference to the drawings.

Figure 1 is a block diagram showing the configuration of an embodiment of the present invention.
゛, taking the case of transmission phasing as an example, ρ° width delay phasing unit 1
-1~1. -n, channel switch 2-1 to 2-n
, phasing controller 3. Equipped with a channel switcher 4 14
will be accomplished.

Prior to explaining the embodiment based on FIG.
According to Fig. 3, 0) In the phasing -) 3'A1, A
The case of 7 Y1 step will be explained as an example. Extended phase-h): I; Ii
The delay phasing amount of the next -Q/+- width or the Q of n channels.

, ,'I'1-width delay phaser.

In the case of the present invention, the j? of channel n? It is assumed that the phase shifter can provide all n delay amounts necessary for phasing over the ρ° width.

If the shift in the phasing direction exceeds Q/r+°, all channel connections must be switched around the phasing direction at the same time, or in the case of uninventiveness, the third
In the figure, if you try to turn the clockwise direction by 1 step to shift 1, the step shift wave will be transmitted to 2:;
The delay phasing device has Qo from stave 2 to stave 1]-1, or the phasing angle in this case, from the six staves r++] to be applied to the transmitter.

If you try to shift beyond H / Tl ° again from this state, the amount of delay phasing for the stave n + ] transmitter. Contacting stave n -1-2
The delay phasing amount that was attached to the stave 2 transmitter is applied instead to the transmitter, and in this case, from the stave 3 transmitter to the stave n-[2 transmitter's ρ° is the phasing amount. It becomes a corner.

Thereafter, this switching is repeated, and the delay N- given to the stave n transmitter is switched to the stave n transmitter, and then the delay N- given to the stave n transmitter is switched to stave 2n, and then to stave n+1, The delay phasing amount that was being used is stave 2 n
+] Provided for switching to the transmitter.

Now, assuming that ρ° is 120°, the delay and phasing amount that was initially given to the stave 1 transmitter by 1ζ1 is the stave Yl+1. Stay 2 n + 1, Stay 71 and 3
The operations of turning off (a) and turning off (+) are completed, and the same goes for other transmitters. In other words, channel switching only needs to be performed three times for each channel, which greatly simplifies channel switching.

Returning again to FIG. 1, the description of the embodiment will be continued.

Q° width delay phasing circuit 1-1.~]-n is 0° to -Q
The phasing circuit is a phasing circuit having sufficient phase delay and phasing constants to perform delayed phasing up to . Let's do it.

k=1.2. ..., n Here, X is the phasing direction input to the final controller 3, yk
is the conversion direction given to each l° width delay phasing circuit]-1 to 1-r. Also, the function Mo Ding) (A, B) is A
It is a function to find the remainder when divided by B, and 1( is a numerical value of 1 to n, which is the number of channels of the ρ° width phasing circuits 1--1 to 1-n.

The channel switchers 2-1 to 2-n select whether to output the phased output to the channel on the circumference of each channel, 1-) α) Human input signal /
Connect one of the m channels to the output.

-10-11 The channel switching controller 8 controls whether or not I (channel (1-n) should be 1.~1 channel and ' for the phasing direction, and the following formula is used. Here, the function JNT(A/B) is a function that calculates the integer part of the quotient of A divided by B. Therefore, 21( is an integer between 1 and m/n, and is sent to each switch. Each switch receives this signal and outputs a signal to the Zk output circuit of the rn/n output circuit.

It should be noted that although the above-mentioned embodiments have been explained using the case of transmission phasing as an example, it is clear that the same implementation is possible in the case of reception phasing as well.

〔Effect of the invention〕

As explained above, the present invention provides a p° width delay phasing circuit n-chi A
・Switch the phasing channel sequentially to all channels by controlling channel cut 1 to channel n11 and channel D to channel 2 n for delayed phasing. There is no need to do so, you can just switch specific channels all around the Z,)
, the channel switching device that requires nl x n in the transducer of the In stave is reduced to rn/n x n, that is, n1, and the amount of hardware is reduced to 1. /n, which has the effect of reducing the size of the device and greatly simplifying the switching contents.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing the configuration of an embodiment of the present invention, Fig. 2 is a block diagram showing the basic configuration of a conventional sonar phasing circuit, Fig. 37 is a detailed explanatory diagram of the present invention, and Fig. 4 is an explanatory diagram of conventional phasing. ]-1~1-n...ρ° width delay phaser, 2-1~2
-n, 5-1~5-n...-ρ/, n'' width delay phasing device, 6-1~6-n Channel υ changer, 3,7
...Phase controller, 4.8...Channel switch. Agent Patent Attorney Uchihara n“1′

Claims (1)

[Claims] N staves (stabs) adjacent to each other in a cylindrical array type transducer
e) In the sonar phasing circuit that delays and adjusts the phase of the transmitting and receiving output applied to the transducer to synthesize desired transmitting and receiving wave directivity in the azimuth range of 1°, An n-channel 1° width delay that includes all of the n phase adjustment delay phasing amounts necessary for phasing each of the transducers of the n staves arranged, and applies any of them to the transmitting and receiving inputs. a phasing controller configured to control each of the n-channel 1° width delay phasing devices to set the delay phasing amount while receiving information regarding the azimuth to be directed by phasing; Said n
A channel l° width delay phasing device is switched and connected to each of the n-channel transducer staves adjacent to each other in the cylindrical array type transducer in such a manner that it can be phased in accordance with the direction to be directed. Initial setting of the n-channel channel switch and the n-channel 1° width delay phaser for phasing within the azimuth range of 1° while receiving information regarding the azimuth to be directed by the phasing. Set the l° width delay phasing device at the initial position, connect it to the adjacent transducer of the n staves in the azimuth range of l°, and set the pointing azimuth by phasing beyond the azimuth range of l°. In the case of rotational shift, the channel switching controller is provided to control switching so as to be connected to n stave transducers including transducers that are stepped one by one in the rotational shift direction. Characteristic sonar phasing circuit.