JP6772672B2 - Display device and display method - Google Patents

Description

The present invention relates to a display device and a display method for acquiring an arrival horizontal direction and an arrival elevation angle of an acoustic signal received by a sonar device or the like.

Conventionally, in a sonar device, as a method of acquiring the arrival horizontal direction of an acoustic signal, a BTR (Bearing Time Recording: change in signal level for each horizontal direction with time) display in which the intensity of the acoustic signal for each horizontal direction is displayed in time series is displayed. Therefore, a method of obtaining the horizontal direction of the signal of interest is known (see, for example, Patent Document 1).

A BTR display method in a conventional display device will be described. The display device performs horizontal phase adjustment processing on the acoustic signal received from the receiver array at regular intervals. In the horizontal phase adjustment process, the display device outputs the level of the received signal with the horizontal direction-frequency as the axis for an arbitrary elevation angle from the input acoustic signal. With respect to this phase adjustment output, the display device performs accumulation in the frequency direction by frequency accumulation processing to obtain BL (Bearing Level: signal level for each horizontal direction). The display device performs display processing on BLs acquired at regular intervals, and outputs the intensity of the acoustic signal for each horizontal direction as a BTR display in which the intensity of the acoustic signal is displayed in chronological order. The operator can obtain information on the arrival horizontal direction of the attention signal from the BTR display.

Next, a method of acquiring the arrival elevation angle of the acoustic signal from the BTR display will be briefly described. The operator acquires the horizontal direction of the signal of interest from the BTR display, and the display device performs elevation phase processing on the acquired horizontal orientation to obtain EL (Elevation Level: signal level for each elevation angle). Subsequently, the display device acquires the arrival elevation angle of the attention signal numerically by performing an elevation angle estimation process on the acquired EL to estimate the elevation angle at which the EL level is maximized.

Japanese Unexamined Patent Publication No. 2005-91300

By the method described above, it is possible to obtain the arrival horizontal direction and the arrival elevation angle of the acoustic signal. However, when acquiring the horizontal orientation for performing the eccentricity processing from the BTR display, the eccentricity at which the attention signal arrives and the ectopic angle specified in the horizontal phasing processing may be significantly different. The attention signal on the BTR display is not displayed, or the signal strength is weakened, and the horizontal direction of the attention signal cannot be acquired. Further, in order to acquire the elevation angle, it is necessary to perform a procedure for performing the elevation adjustment process again after acquiring the horizontal direction on the BTR display. As a result, it takes time to acquire the elevation angle of the attention signal.

With the device disclosed in Patent Document 1, the horizontal direction of the attention signal can be obtained, but the elevation angle of the attention signal cannot be obtained.

The present invention has been made to solve the above problems, and provides a display device and a display method for displaying an acoustic signal so that the operator can glance at the arrival horizontal direction and the arrival elevation angle of the acoustic signal. is there.

The display device according to the present invention is based on a plurality of output units that output a plurality of horizontal orientation levels of different elevation angles from an acoustic signal at a fixed cycle, and a signal level for each horizontal orientation output from the plurality of output units. a display processing unit that generates a display information to the horizontal orientation per level, have a, a display unit for displaying the display information in which the display processing unit has generated, the display processing unit, as the display information, a plurality of For each of the horizontal orientation levels, the horizontal orientation is on the horizontal axis, the time is on the vertical axis, and the orientation level time series information in which the intensity of the signal level is represented by shading is generated, and the display unit is used as the display information. The directional level time series information of the above is displayed with the elevation angles different from each other .

The display method according to the present invention is a display method using a display device having a display unit and a display processing unit, wherein the display processing unit calculates horizontal orientation levels of a plurality of different elevation angles from an acoustic signal at regular intervals, and the above-mentioned display method is described. display processing section based on the signal level of the certain period horizontal orientation each calculated in, generates display information in the horizontal direction for each level, the display processing unit to display the generated display information on the display unit As the display information, the display processing unit provides directional level time series information in which the horizontal azimuth is the horizontal axis, the time is the vertical axis, and the signal level intensity is shaded for each of the plurality of horizontal directional levels. The display processing unit generates and displays the plurality of directional level time series information as the display information on the display unit with different elevation angles .

In the present invention, since the display device displays the information generated for each horizontal direction level from the horizontal direction levels of a plurality of different elevation angles, the information obtained by combining the elevation angle and the horizontal direction level of the acoustic signal is displayed, and the operator can display the information. Can confirm the arrival horizontal direction and the arrival elevation angle of the acoustic signal at a glance, and can quickly obtain the arrival horizontal direction and the arrival elevation angle of the signal.

It is a block diagram which shows one configuration example of the display device in Embodiment 1. It is a flow chart which shows the operation procedure of the display device of Embodiment 1. It is a figure which shows an example of the screen of the plurality of elevation angle BTR display in the process of step S13 shown in FIG. It is a block diagram which shows one configuration example of the display device in Embodiment 2. It is a flow chart which shows the operation procedure of the display device of Embodiment 2. It is a figure for demonstrating an example of the procedure of ELAZ display generation processing in step S22 shown in FIG. It is a figure which shows an example of the screen of ELAZ display in the process of step S23 shown in FIG. It is a block diagram which shows one configuration example of the display device in Embodiment 3. It is a flow chart which shows the operation procedure of the display device of Embodiment 3. It is a schematic diagram which shows an example of the state which ELAZ data is accumulated in the ELAZ display storage part shown in FIG. It is a figure which shows an example of the image of the screen which combined the BTR display and ELAZ display in the display part shown in FIG. It is a figure which shows an example of the image of the screen when the operator specifies a time in the state of the screen shown in FIG. 11A. It is a figure which shows an example of the image of the screen when the operator specifies the elevation angle in the state of the screen shown in FIG. 11A. It is a flow chart which shows the other operation procedure of the display device of this Embodiment 3.

An embodiment of the display device will be described with reference to the drawings. In the embodiment described below, the case where the sonar device including the display device is a passive sonar device will be described.

(Embodiment 1)
The configuration of the display device according to the first embodiment will be described.
FIG. 1 is a block diagram showing a configuration example of a display device according to the first embodiment.
As shown in FIG. 1, the display device 1 has a calculation unit 2 and a display unit 6. The calculation unit 2 has a plurality of output units 100-1 to 100-n (n is an integer of 2 or more) and a display processing unit 7. The display device 1 is connected to the receiver array 10. The receiver array 10 is a receiver that receives an acoustic signal. The communication connection between the display device 1 and the receiver array 10 may be wired or wireless. The display device 1 is an information processing device including a personal computer.

Output units 100-1 to 100-n are assigned different elevation angles. In the configuration example shown in FIG. 1, the elevation angles φ1 to φn are assigned to the output units 100-1 to 100-n. Each of the output units 100-1 to 100-n calculates the direction and intensity of the sound wave for the elevation angle assigned to the own unit. Since the output units 100-1 to 100-n have the same configuration, the configuration of the output unit 100-1 will be described in detail below.

Each output unit 100-1 has a horizontal phase adjusting processing means 2-1 and a frequency accumulating processing means 3-1. When the horizontal phase adjusting processing means 2-1 receives a plurality of sound waves arriving at the receiver array 10 at a constant cycle, the horizontal phase adjusting processing means 2-1 calculates the direction and intensity of the sound waves with respect to the elevation angle φ1. The frequency accumulating processing means 3-1 accumulates the output value received from the horizontal phase adjusting processing means 2-1 in the frequency direction.

The display processing unit 7 has a BTR display generation means 4 that generates BTR data which is BTR display information from BL data indicating a horizontal orientation level. When the BTR display generation means 4 receives BL data from the frequency accumulation processing means 3-1 to 3-n, the BTR display generation means 4 generates a plurality of BTR data using the BL data. Further, the BTR display generation means 4 may generate data in which a plurality of generated BTR data are arranged in the order of elevation angle. Hereinafter, data in which a plurality of BTR data are arranged in the order of elevation angles is referred to as multiple elevation angle BTR data, and data displaying a plurality of elevation angle BTR data is referred to as a plurality of elevation angle BTR display.

Next, the operation of the display device 1 according to the first embodiment will be described. FIG. 2 is a flow chart showing an operation procedure of the display device of the first embodiment. In step S10 shown in FIG. 2, when the display device 1 receives an acoustic signal from the receiver array 10, the output units 100-1 to 100-n calculate BL data for each elevation angle as follows. Perform the process (step S11).

In the horizontal phase adjustment process of step S11-1, the output units 100-1 to 100-n output as the level of the received signal with the horizontal direction-frequency as the axis for the elevation angles φ1 to φn. Subsequently, in the frequency accumulating process in step S11-2, the output units 100-1 to 100-n perform accumulating in the frequency direction with respect to the phase adjustment output in step S11-1 to generate BL data.

The display processing unit 7 generates BTR data using the BL data received from the output units 100-1 to 100-n at regular intervals (step S12). Then, the display processing unit 7 represents the intensity of the signal level for each of the BTR data of the plurality of elevation angles in a time-series shade image, generates information arranged in the order of the elevation angles, and displays the information on the display unit 6 ( Step S13). The BTR data corresponds to the directional level time series information representing the time series change of the horizontal directional level.

In the first embodiment, the elevation angle of the phase adjustment processing target is changed from φ1 to φn, and the phase adjustment processing of the acoustic signal is simultaneously performed for each of the elevation angles φ1 to φn, so that the BTR is different for each elevation angle. A display is obtained. In the multiple elevation angle BTR display in step S13, the display device 1 displays different BTR displays side by side for each elevation angle, so that the arrival horizontal direction and the arrival elevation angle are acquired from the BTR display having the strongest acoustic signal intensity of interest. Present the possible screens to the operator.

FIG. 3 is a diagram showing an example of a screen for displaying a plurality of elevation angles BTR in the process of step S13 shown in FIG. As shown in FIG. 3, on the screen 61 of the display unit 6, the signal 50A is displayed darkly on the BTR display having an elevation angle φ1 and the signal 50B is displayed darkly on the BTR display having an elevation angle φ3. On the other hand, in the BTR display having an elevation angle of φ2, the signal 50A and the signal 50B are displayed lightly. From the display contents, it can be seen that the signal 50A has a strong intensity in the BTR display having an elevation angle of φ1 and the signal 50B has a strong intensity in the BTR display having an elevation angle of φ3. Therefore, the operator can determine from the display contents of the screen 61 that the signal 50A arrives from the elevation angle φ1 and the signal 50B arrives from the elevation angle φ3.

In the screen example shown in FIG. 3, the display unit 6 shows the BTR display for each elevation angle φ1 to φ3, but the number of BTR displays displayed by the display unit 6 at one time is not limited to three and is two or more. All you need is. By comparing two or more BTR displays relative to each other, the operator can easily predict the arrival elevation angle of the attention signal.

In the first embodiment, the display device 1 calculates BTR data of different elevation angles from the acoustic signal, so that information in which the elevation angle of the acoustic signal and the horizontal orientation level are combined can be generated. When the display device 1 simultaneously displays two or more BTR displays, the operator can check the acoustic signals coming from different elevation angles at once from the combination of the signal elevation angle and the BTR display, and detect the attention signal. Opportunities increase. Further, it is possible to provide a display method capable of confirming the arrival horizontal direction and the arrival elevation angle of the acoustic signal at a glance, and the operator can quickly acquire the arrival horizontal direction and the arrival elevation angle of the signal.

(Embodiment 2)
The configuration of the display device according to the second embodiment will be described. FIG. 4 is a block diagram showing a configuration example of the display device according to the second embodiment. A detailed description of the configuration similar to that of the first embodiment will be omitted.

In the second embodiment, the display processing unit 7 has an ELAZ (Elevation-Azimuth: azimuth-elevation angle) display generation means 11 instead of the BTR display generation means 4 shown in FIG. The ELAZ display generation means 11 arranges BL data received from the output units 100-1 to 100-n in the order of elevation angles, the horizontal axis is the horizontal axis, the elevation angle is the vertical axis, and the signal level intensity is displayed in shades of ELAZ. Generate display information. When generating the ELAZ display information, the ELAZ display generation means 11 performs an interpolation process between the elevation angle and the horizontal direction.

Next, the operation of the display device 1 of the second embodiment will be described. FIG. 5 is a flow chart showing an operation procedure of the display device according to the second embodiment. A detailed description of the same operation as in the first embodiment will be omitted.

In step S10 and step S11 shown in FIG. 5, the display device 1 performs the same processing as in step S10 and step S11 described with reference to FIG. 2, and the output units 100-1 to 100-n have different elevation angles. Outputs n BL data. In step S22, when the ELAZ display generation means 11 inputs n BL data having different elevation angles, the ELAZ display generating means 11 arranges the n BL data in the order of the elevation angle, and the level of the acoustic signal centered on the elevation angle-horizontal direction. Generates three-dimensional data representing. Then, the ELAZ display generation means 11 interpolates the elevation angle-horizontal axis with respect to the generated three-dimensional data by using the bilinear method or the bicubic method.

FIG. 6 is a diagram for explaining an example of the procedure of the ELAZ display generation process in step S22 shown in FIG. As shown in FIG. 6A, the BL data for each elevation angle is a graph showing the intensity of the level with respect to the horizontal direction. The ELAZ display generation means 11 generates three-dimensional data by arranging n BL data having different elevation angles in the order of elevation angles as shown in FIG. 6B. At that time, since the elevation angle is a discrete value of φ1 to φn, the ELAZ display generation means 11 interpolates the signal level between the elevation angle and the horizontal orientation by using a bilinear method or a bicubic method. The bilinear method is a method of calculating the value of the interpolation target point by using the values of two points in the vicinity of the interpolation target point. The bicubic method is a method of calculating the value of the interpolation target point by using not only the two points near the interpolation target point but also the values adjacent to the two points.

The ELAZ display generation means 11 uses the three-dimensional data after interpolation to generate ELAZ data which is ELAZ display information with the elevation angle as the vertical axis and the horizontal direction as the horizontal axis, and the ELAZ data is displayed on the display unit 6. Display (step S23). The ELAZ display is updated at regular intervals and presented to the operator. The ELAZ data corresponds to directional elevation information representing the signal level of the horizontal orientation with respect to the elevation angle.

FIG. 7 is a diagram showing an example of an ELAZ display screen in the process of step S23 shown in FIG. In the screen 62 shown in FIG. 7, the signal 50A is displayed darkly at the elevation angle φ1 and the signal 50B is displayed darkly at the elevation angle φ2. In the example shown in FIG. 7, the appearance of weak signal levels distributed around the signals 50A and 50B is displayed lightly. From the screen 62 shown in FIG. 7, the operator can determine the arrival horizontal direction and the arrival elevation angle of the signals 50A and 50B with one display.

In the second embodiment, as an example of the processing, the BL data of n elevation angles of the elevation angles φ1 to φn obtained in the processing of step S21 are input to the ELAZ display processing in step S22. The number of n can be set arbitrarily.

In the second embodiment, the ELAZ data in which the elevation angle and the horizontal orientation of the acoustic signal are combined is displayed, so that the operator can quickly determine the arrival horizontal orientation and the arrival elevation angle of the signal as compared with the first embodiment. Can be obtained. Further, since the interpolation processing is performed in the elevation direction, the operator can acquire the elevation angle information in more detail than in the case of the first embodiment.

(Embodiment 3)
The configuration of the display device according to the third embodiment will be described. FIG. 8 is a block diagram showing a configuration example of the display device according to the third embodiment. A detailed description of the same configuration as that of the first embodiment and the second embodiment will be omitted.

As shown in FIG. 8, the display device 1 of the third embodiment includes a calculation unit 2, a display unit 6, an ELAZ display storage unit 12, and an operation unit 17. In addition to the BTR display generation means 4 shown in FIG. 1 and the ELAZ display generation means 11 shown in FIG. 4, the display processing unit 7 in the third embodiment includes a BTR display selection means 14 and an ELAZ display storage processing means 16. Have.

The operation unit 17 selects the BTR display from the time specification unit 15 that specifies the time to instruct the ELAZ display to be displayed by the operator from the BTR display displayed by the display unit 6, and the BTR display of a plurality of elevation angles by the operator. It has a selection unit 13. The operation unit 17 is an input device such as a mouse and a keyboard, for example. The ELAZ display storage unit 12 stores the ELAZ display generated by the ELAZ display generation means 11. The ELAZ display storage unit 12 is, for example, a storage device such as a hard disk and a non-volatile memory.

The ELAZ display storage processing means 16 manages the ELAZ data accumulated in time series, and causes the display unit 6 to display the ELAZ data at the time specified by the operator. The BTR display selection means 14 manages a plurality of BTR data having different elevation angles, and causes the display unit 6 to display the BTR data having the elevation angle designated by the operator.

Next, the operation of the display device 1 of the third embodiment will be described. FIG. 9 is a flow chart showing an operation procedure of the display device according to the third embodiment. Detailed description of the operation similar to that of the first embodiment and the second embodiment will be omitted.

In step S10 and step S11 shown in FIG. 9, the display device 1 performs the same processing as in step S10 and step S11 described with reference to FIG. 2, and the output units 100-1 to 100-n have different elevation angles. Outputs n BL data. Further, the display processing unit 7 generates BTR data for each elevation angle in the same manner as in the first embodiment (step S12), and generates ELAZ data in the same manner as in the second embodiment (step S22).

The ELAZ display storage processing means 16 stores the ELAZ data output by the ELAZ display generation means 11 in the ELAZ display storage unit 12 (step S33). FIG. 10 is a schematic diagram showing an example of a state in which ELAZ data is accumulated in the ELAZ display storage unit shown in FIG. As shown in FIG. 10, ELAZ data is accumulated in the ELAZ display storage unit 12 in chronological order for each cycle. When the operator specifies the time via the time designation unit 15 of the operation unit 17 (step S34), the ELAZ display storage processing means 16 reads the ELAZ data at the specified time from the ELAZ display storage unit 12 and displays the ELAZ data on the display unit 6. Display (step S35).

When the operator specifies the elevation angle via the selection unit 13 of the operation unit 17 (step S36), the BTR display selection means 14 receives the BTR of the specified elevation angle from the BTR data of the different elevation angles generated in step S12. The data is displayed on the display unit 6 (step S38). After that, when the operator specifies the time from the BTR display displayed on the display unit 6, the display device 1 performs the process in the same manner as in steps S34 to S35 described above. Further, when the operator specifies the elevation angle from the ELAZ display displayed on the display unit 6, the display device 1 performs the same processing as in steps S36 to S38 described above.

Next, the operation method of the operator with respect to the display device 1 of the third embodiment will be described with reference to the drawings. FIG. 11A is a diagram showing an example of an image of a screen in which a BTR display and an ELAZ display are combined in the display unit shown in FIG. FIG. 11B is a diagram showing an example of an image of the screen when the operator specifies the time in the state of the screen shown in FIG. 11A. FIG. 11C is a diagram showing an example of an image of the screen when the operator specifies the elevation angle in the state of the screen shown in FIG. 11A.

As an initial state, after step S12 and step S22 shown in FIG. 9, the display processing unit 7 selects BTR display and ELAZ display according to a preset time and elevation angle and displays them on the display unit 6. It will be explained in the case of making it.

As an initial state, the display device 1 causes the display unit 6 to display the screen 63 shown in FIG. 11A, which is a combination of the BTR display and the ELAZ display. On the screen 63 shown in FIG. 11A, both the BTR display and the ELAZ display are presented to the operator. On the BTR display, a line cursor 71 perpendicular to the time axis direction and a line 72 passing through the intersection of the line cursor 71 and the signal and perpendicular to the horizontal axis direction are displayed. In the screen 63 shown in FIG. 11A, the line 72 passes through the intersection of the line cursor 71 and the signal 50A.

The BTR display line 72 is also displayed on the ELAZ display and passes through the point of the signal 50A in the ELAZ display. On the BTR display, a line cursor 73 passing through the intersection of the line 72 and the signal 50A is displayed. The line cursor 73 extends to the axis of the elevation angle parallel to the axial direction in the horizontal direction. Therefore, the operator can know the elevation angle of the signal 50A by looking at the point where the line cursor 73 touches the axis of the elevation angle. As shown in FIG. 11A, the signal 50B is also displayed on the BTR display and the ELAZ display.

With the screen 63 displayed, the operator operates the time designation unit 15 and moves the line cursor 71 on the BTR display in the time axis direction as shown in the screen 64 of FIG. 11B to specify the time. can do. When the operator specifies the time, the ELAZ display is switched in conjunction with the specified time. On the screen 64, in the BTR display, the line 72 moves with the movement of the line cursor 71, and in the ELAZ display, the line cursor 73 moves with the movement of the line 72. By referring to the point where the line cursor 73 touches the elevation angle axis on the ELAZ display on the screen 64, the operator can confirm that the arrival elevation angle of the signal 50B is close to the arrival elevation angle of the signal 50A at the specified time. ..

On the other hand, the operator operates the selection unit 13 while the screen 63 is displayed, and moves the line cursor 73 on the ELAZ display in the axial direction of the elevation angle as shown in the screen 65 of FIG. 11C. You can specify the elevation angle. When the operator specifies the elevation angle, the BTR display is switched in conjunction with the specified elevation angle. On the screen 65, the line cursor 73 is designated as the elevation angle of the signal 50B on the ELAZ display, and the BTR display is switched to the BTR display of the signal 50B. On the screen 65, in the ELAZ display, the line 72 moves with the movement of the line cursor 73, and in the BTR display, the line cursor 71 moves with the movement of the line 72. The operator can confirm the intensity and arrival time of the signal 50B at the specified elevation angle by referring to the point where the line cursor 71 touches the time axis on the BTR display on the screen 65.

In the first embodiment, since a plurality of BTRs are displayed on the same screen, it is necessary to shorten the vertical axis as the number of BTRs to be displayed increases, and the displayable time length may become shorter. In the second embodiment, the operator can confirm only the ELAZ display for a certain instantaneous acoustic signal, and cannot confirm the time change of the horizontal direction and the elevation angle of the signal.

On the other hand, in the third embodiment, in addition to the same effect as in the second embodiment, the operator can check the ELAZ display retroactively, and the time change of the arrival horizontal direction and the arrival elevation angle of the signal. Can be easily obtained. In addition, since the operator can select the elevation angle to be displayed on the BTR from the ELAZ display, the BTR display can be adjusted to the arrival elevation angle of the attention signal while maintaining the display time length even if the elevation angle to be processed at the same time increases. You can check it quickly.

Regarding the present invention, in the third embodiment described above, an example in which one BTR display and an ELAZ display are combined has been described, but it is also possible to make the BTR display a plurality of elevation angle BTR displays.

FIG. 12 is a flow chart showing another operation procedure of the display device according to the third embodiment. The display method shown in FIG. 12 is a combination of a plurality of elevation angle BTR displays and an ELAZ display. In step S38, the display processing unit 7 causes the display unit 6 to display m BTR displays. The number m (m ≦ n) of BTR data displayed by the display unit 6 can be set to any integer of 1 or more. By combining the multiple elevation angle BTR and the ELAZ display, the operator can simultaneously confirm the time change of the horizontal direction and the elevation angle for a plurality of signals having different elevation angles.

In the above-described first to third embodiments, the case where the display device is applied to the passive sonar device has been described, but the process executed by the display device may be applied to the active sonar device and the radar device.

1 Display device, 2 Calculation unit, 2-1 to 2-n horizontal phase adjustment processing means, 3-1 to 3-n frequency accumulation processing means, 4 BTR display generation means, 6 display unit, 7 display processing unit, 10 receivers Wave device array, 11 ELAZ display generation means, 12 ELAZ display storage unit, 13 selection unit, 14 BTR display selection means, 15 time designation unit, 16 ELAZ display storage processing means, 17 operation unit, 50A, 50B signal, 61-65 Screen, 71 line cursor, 72 line, 73 line cursor, 100-1 to 100-n output unit.

Claims (11)

Multiple output units that output horizontal orientation levels of multiple different elevation angles from acoustic signals at regular intervals,
A display processing unit that generates display information for each horizontal direction level based on the signal levels for each horizontal direction output from the plurality of output units .
A display unit that displays the display information generated by the display processing unit, and
Have a,
The display processing unit
As the display information, for each of the plurality of horizontal orientation levels, orientation level time series information in which the horizontal orientation is the horizontal axis, the time is the vertical axis, and the signal level intensity is represented by shading is generated.
The display unit
As the display information, a plurality of the orientation level time series information is displayed with different elevation angles.
Display device. Multiple output units that output horizontal orientation levels of multiple different elevation angles from acoustic signals at regular intervals,
A display processing unit that generates display information for each horizontal direction level based on the signal levels for each horizontal direction output from the plurality of output units.
A display unit that displays the display information generated by the display processing unit, and
A storage unit that stores a plurality of the horizontal orientation levels in the order of elevation, the horizontal axis is the horizontal axis, the elevation angle is the vertical axis, and the intensity of the signal level is displayed in chronological order.
For each of the plurality of horizontal directional levels, the horizontal axis is the horizontal axis, the time is the vertical axis, and the time of the elevation angle to be displayed is specified from the directional level time series information in which the intensity of the signal level is represented by shading. Has a designated part and
The display processing unit
As the display information, the directional elevation angle information is generated in time series and stored in the storage unit.
The directional elevation angle information corresponding to the time specified by the time designation unit is read from the storage unit and displayed on the display unit .
Display device. The display processing unit
The display device according to claim 2, wherein when the directional elevation angle information is generated, signal level interpolation processing is performed between the elevation angle and the horizontal orientation. The display device according to claim 1 or 2 , wherein the display unit simultaneously displays two or more of the directional level time series information. It has a selection unit that selects the elevation angle from the azimuth elevation angle information.
The display processing unit
The display device according to claim 2 or 3 , wherein the display unit displays the directional level time series information of the elevation angle selected by the selection unit. The time designation unit
The display device according to claim 2 or 3 , wherein a time is specified according to an operation performed by an operator with respect to the direction level time series information displayed by the display unit. The selection unit
The display device according to claim 5 , wherein an elevation angle is specified according to an operation performed by an operator with respect to the azimuth elevation angle information displayed by the display unit. Each of the plurality of output units
Horizontal phasing processing means for pacing and outputting the level of the received signal centered on the horizontal direction and frequency from the acoustic signal for different elevation angles.
A frequency accumulating processing means for accumulating in the frequency direction with respect to the phase adjustment output,
The a display device according to any one of claims 1-7. The display device according to any one of claims 1 to 8 , wherein the display device is applied to a sonar device. It is a display method using a display device having a display unit and a display processing unit.
The display processing unit calculates the horizontal orientation levels of a plurality of different elevation angles from the acoustic signal at regular intervals.
The display processing unit generates display information for each horizontal direction level based on the signal level for each horizontal direction calculated in the fixed cycle .
The display processing unit to display the generated display information to the display unit,
As the display information, the display processing unit generates directional level time series information in which the horizontal direction is the horizontal axis, the time is the vertical axis, and the signal level intensity is represented by shading for each of the plurality of horizontal direction levels. And
As the display information, the display processing unit attaches the elevation angles different to each other to the plurality of directional level time series information and causes the display unit to display the information.
Display method. A display method using a display device having a display unit, a storage unit, a time designation unit, and a display processing unit.
The display processing unit calculates the horizontal orientation levels of a plurality of different elevation angles from the acoustic signal at regular intervals.
The display processing unit generates display information for each horizontal direction level based on the signal level for each horizontal direction calculated in the fixed cycle.
The display processing unit causes the generated display information to be displayed on the display unit.
As the display information, the display processing unit arranges a plurality of the horizontal orientation levels in the order of elevation angles, the horizontal orientation is the horizontal axis, the elevation angle is the vertical axis, and the intensity of the signal level is displayed in shades. Information is accumulated in the storage unit in chronological order,
The display processing unit displays an elevation angle for each of the plurality of horizontal directional levels from the directional level time series information in which the horizontal direction is the horizontal axis and the time is the vertical axis and the intensity of the signal level is represented by shading. When the time is specified via the time designation unit, the directional elevation angle information corresponding to the time specified by the time designation unit is read from the storage unit and displayed on the display unit.
Display method.

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