A method for measuring the distance between adjacent landing points of suspended depth bomb array

Abstract

The present invention discloses a method for measuring the distance between adjacent landing points of a suspended deep bomb array, the method comprising: selecting and placing a reference area; placing two rows of buoys symmetrically in the longitudinal direction with the center point of the deep bomb array as the center; measuring the parameters of the landing point position; obtaining an image of the moment when each deep bomb enters the water; calculating the distance between adjacent landing points; establishing an X-Y coordinate system in the image, taking the vertical direction of the forward route of the incoming torpedo as the X-axis, and the opposite direction of the forward route of the incoming torpedo as the Y-axis, obtaining the projection length of the depth bomb landing point position on the X-axis and the Y-axis; calculating the distance between adjacent landing points of the bomb array; array parameter measurement and evaluation; calculating the projection distance between adjacent landing points in the X-axis direction, and finding the interception range length value formed by the deep bomb array in the X-axis direction, that is, the length of the interception area formed by the deep bomb array on the forward route of the incoming torpedo. The present invention supports the measurement of the distance between adjacent landing points of the deep bomb array under marine environmental conditions.

Description

Technical Field

[0001] The invention belongs to the technical field of underwater defense operations of surface ships, and in particular relates to a method for measuring the interval distance between adjacent landing points of a suspended depth charge array. Background Art

[0002] The main working principle of suspended depth charge defense torpedoes is to deploy a certain number of depth charges on the route of the incoming target to form a bomb array to intercept the target. Its interception effect is affected by many factors such as target detection, data solution, weapon launch control, and depth charge array effect. Among them, the formation of the depth charge array, as the result of the depth charge deployment, directly affects whether the incoming torpedo passes the array, determines the array effect of the depth charge array, and ultimately affects the interception effect of the depth charge on the incoming torpedo. Therefore, measuring the distance between adjacent landing points of the depth charge array has become an important content that affects the evaluation of the array effect and the evaluation of the depth charge combat effect.

[0003] At present, there is still a blank in the measurement of the deployment effect of suspended depth bomb arrays, and there is no detailed report on the measurement method of the distance between adjacent landing points of the bomb array. Under offshore test conditions, the measurement methods and means are limited, and the test environment conditions are far from comparable to laboratory and land test conditions, making measurement difficult. This is mainly manifested in:

[0004] (1) The measurement of the landing point is difficult to implement.

[0005] Commonly used positioning and distance measurement tools such as GPS, laser rangefinders and other equipment are difficult to use in offshore test conditions. The function, performance, structural design, volume and weight requirements of the depth bomb itself determine that it is difficult to have sufficient conditions to carry a GPS module, and positioning in offshore tests is difficult. During the test, after the ammunition is fired into the water, the landing point of each ammunition will drift due to factors such as the water flow rate, making the landing point even more difficult to measure.

[0006] (2) The marine environment is complex and the status quo is difficult to maintain.

[0007] Sea trials need to face complex sea environments. For example, wind direction, wind speed, water flow rate, etc. will all cause deviations in the landing point of each depth charge in the array. At the same time, it will bring great difficulties to the state of the landing point and the state of the array formation, resulting in a significant increase in the difficulty of measuring the landing point. Summary of the invention

[0008] The purpose of the present invention is to provide a method for measuring the distance between adjacent landing points of a suspended depth charge array, to solve the problem of measuring the depth charge landing point position and the distance between adjacent landing points of the array under marine environmental conditions, thereby supporting the evaluation of the effect of the suspended depth charge array and laying the foundation for the combat use of the suspended depth charge and the evaluation of its combat effectiveness.

[0009] The technical solution adopted by the present invention is as follows:

[0010] A method for measuring the distance between adjacent landing points of a suspended depth bomb array comprises the following steps:

[0011] (1) Selection and deployment of buoy reference areas

[0012] Under the conditions of the sea test, a surface ship with a certain displacement is selected as the launch platform, and the launch equipment is installed on the launch platform; the position of the center point of the depth charge array is determined, and two rows of buoys are symmetrically arranged longitudinally and frontward and rearward with the center point of the depth charge array as the center as the center, and the buoy reference area should cover the depth charge landing point dispersion error range when the depth charge is placed at the center point;

[0013] (2) Measurement of landing point position parameters

[0014] The aerial photography drone is launched into the air, flies to the center of the missile array, hovers at a certain height, covers and aims at the buoy reference area, and shoots from a bird's-eye view;

[0015] Determine the distance D between the center point of the depth charge array and the launch platform. The launch equipment calculates the launch parameters based on the distance D, launches the depth charge, and arranges the depth charge array. The aerial drone obtains images of each depth charge at the moment of entering the water.

[0016] (3) Calculation of distance between adjacent landing points

[0017] An XY coordinate system is established in the image, with the vertical direction of the forward path of the attacking torpedo as the X axis and the opposite direction of the forward path of the attacking torpedo as the Y axis; the landing point of each depth bomb is obtained from the image of each depth bomb entering the water;

[0018] Draw a perpendicular line from the depth bomb landing point to the X-axis and Y-axis of the coordinate system, and obtain the projection length of the depth bomb landing point in the image on the X-axis and Y-axis, which are respectively recorded as l 1x , l 2x …l nx , l 1y , l 2y …l ny ; Among them, l 1x <l 2x <…<l nx , n represents the total number of depth bombs;

[0019] Calculate the interval length between two adjacent landing points in the array in the coordinate system 11, 12...1 (n-1) for:

[0020] 11=((l 2x -l 1x ) 2 +(l 2y -l1y ) 2 ) 1 / 2

[0021] …

[0022] 1 (n-1) =((l nx -l (n-1)x ) 2 +(l ny -l (n-1)y ) 2 ) 1 / 2 (Formula 1)

[0023] Get the distance between the two buoys in the image, denoted as l;

[0024] Calculate the actual distance between two adjacent landing points:

[0025] L1=L×11 / 1,

[0026] …

[0027] L (n-1) = L×1 (n-1) / 1 (Formula 2)

[0028] Wherein, L represents the actual distance between the two buoys; L1, L2…L (n-1) The actual interval between two adjacent landing points;

[0029] (4) Formation parameter calculation and evaluation

[0030] Calculate the projection distance L of the distance between each adjacent landing point in the X-axis direction x1 , L x2 …L x(n-1) for:

[0031] L x1 =L×(l 2x -l 1x ) / l

[0032] …

[0033] L x(n-1) =L×(l nx -l (n-1)x ) / l (Formula 3)

[0034] Calculate the interception range length L formed by the deep bomb array in the X-axis direction (x-all); First, determine whether the projection length value of the distance between each adjacent landing point in the X-axis direction reaches 2 times the damage radius of the depth bomb. If it is not less than 2 times the damage radius of the depth bomb, the projection length in the X-axis direction is taken as 2 times the damage radius; if it is less than 2 times the damage radius of the depth bomb, the projection length in the X-axis direction is directly taken as the value; sum up the values ​​to find the interception range length value L formed by the deep bomb array in the X-axis direction (x-all) :

[0035] If L x(i) ≥2r, then L x(i) =2r;

[0036] If L x(i) <2r, then L x(i) =L x(i) ;

[0037] Then L (x-all) =L x1 +L x2 +…+L x(n-1) (Formula 4)

[0038] Where, L x(i) represents the projection length of the distance between the ith adjacent impact points in the X-axis direction, i=1, 2, 3...n-1; r represents the damage radius of the depth bomb;

[0039] According to the solved L (x-all) Get the length of the interception area formed by the depth charge array on the forward path of the incoming torpedo.

[0040] Furthermore, the launching equipment uses a real installation or a prototype that is consistent with the real installation state, and completes the depth charge launch according to the real installation launch process.

[0041] Furthermore, the spacing between the two rows of buoys is 3 to 5 times the longitudinal dispersion error of the depth charge, and the lateral spacing between the buoys is consistent with the longitudinal spacing. The lateral spacing between the buoys can also be adjusted according to needs in combination with the lateral dispersion error of the depth charge.

[0042] Furthermore, 20% of the array deployment width is extended at both ends of the buoy reference area as a lateral coverage margin.

[0043] Furthermore, weights are added under each buoy.

[0044] Compared with the prior art, the present invention can achieve the following beneficial effects:

[0045] The present invention supports the measurement of the distance between adjacent landing points of a depth charge array under marine environmental conditions, supports the evaluation of the effect of depth charge array, and the analysis of the use and combat effectiveness of suspended depth charges, laying the foundation for the capability evaluation of anti-torpedo combat weapon systems of surface ships. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a schematic diagram of the deployment and dispersion of a suspended depth bomb array provided by an embodiment of the present invention;

[0047] Figure 2 Schematic diagram of the distance between adjacent landing points of a suspended depth bomb array provided by an embodiment of the present invention;

[0048] Figure 3 It is a schematic diagram of the distribution of depth charge array landing points and array provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0050] The invention proposes a method for measuring the interval distance between adjacent landing points of a suspended depth charge array under marine environmental conditions, which is suitable for evaluating the effect of a suspended depth charge array and studying the combat use of suspended depth charges.

[0051] Under the conditions of the sea test, the sea condition is not higher than level three. A surface ship with a certain displacement is selected as the launch platform and the launch equipment is installed. In a certain sea area, the launch platform is used to launch a suspended depth bomb array to the designated waters, and the distance between two adjacent depth bombs in the array is measured. The ammunition launch equipment can use the actual installation or a prototype consistent with the actual installation state, and complete the depth bomb launch according to the actual installation launch process. The specific steps are as follows:

[0052] (1) Reference area selection and placement

[0053] Determine the distance D between the center point of the depth charge array and the launch platform. With the center point of the depth charge array as the center, lay two rows of buoys symmetrically in the front and back longitudinally. The spacing distance between the two rows of buoys is L. According to the normal distribution law of error, the actual landing point generally does not exceed the error range of 3 times the theoretical landing point. Considering the longitudinal dispersion error calculation of the outer side of the buoy extending by one times, the spacing distance between the two rows of buoys is about 3 to 5 times the longitudinal dispersion error of the depth charge. The number of buoys in each row is m, and the lateral spacing distance of the buoys is consistent with the longitudinal spacing distance; the cumulative coverage width of the m buoys is L×(m-1), which needs to cover the width of the depth charge array, and the two ends are extended by 20% of the array width as the lateral coverage range margin. Figure 1 As shown. Counterweights can be added under each buoy to reduce drift caused by ocean currents.

[0054] (2) Measurement of landing point position parameters

[0055] The launching equipment calculates the launching parameters according to the depth charge array deployment distance D and other parameters, and waits for the ammunition to be launched.

[0056] The aerial photography drone takes off, flies to the sky above the center point of the missile array, hovers at a certain height, covers and aims at the buoy reference area, and shoots from a bird's-eye view.

[0057] The launch equipment launches the depth charge according to the calculated launch parameters. After a group of depth charge launch arrays are completed, the drone is recovered, the recorded content is played back, and the footage of each depth charge entering the water is screenshoted and numbered and saved in sequence.

[0058] (3) Calculation of distance between adjacent landing points

[0059] Process the numbered screenshots separately, such as Figure 2 As shown. Connect the position points of the buoys in each figure to form a coverage grid. Select the buoy in the leftmost column of the lowest row as the origin, and establish an XY coordinate system with the buoys in this row as the X-axis. That is, the X-axis is the vertical direction of the incoming torpedo's forward path and coincides with the buoys in this row, and the Y-axis is the opposite direction of the incoming torpedo's forward path. Draw a perpendicular line from the landing point B to the X-axis and Y-axis of the coordinate system, and mark the intersection with the Y-axis as B. 1y , B 2y …B ny , the intersection with the X axis is marked as B 1x , B 2x …B nx . In the figure, measure the length between each landing point and its intersection with the Y axis and the X axis. That is, the projection length of the landing point on the X axis and the Y axis is B1B 1y 、B2B 2y …B n B ny , B1B 1x 、B2B 2x …B n B nx , according to the counting rules of the rectangular coordinate system, they are respectively recorded as l 1x , l 2x …l nx , l 1y , l 2y …l ny .

[0060] In each picture, the projection length of a drop point position on the coordinate axis can be measured. Since the coordinate system established in different drop point screenshots is the same, the interval length between different drop points in the photo can be directly calculated using the coordinate parameters. Figure 2As shown, the interval lengths between two adjacent landing points of the bullet array in the coordinate system can be calculated as 11, 12…1 (n-1) for:

[0061] 11=((l 2x -l 1x ) 2 +(l 2y -l 1y ) 2 ) 1 / 2

[0062] …

[0063] 1 (n-1) =((l nx -l (n-1)x ) 2 +(l ny -l (n-1)y ) 2 ) 1 / 2 (Formula 1)

[0064] At the same time, three groups of data on the length of the distance between the two buoys are measured on the graph, and the average value is calculated and recorded as l.

[0065] Since the depth charge drop point and the reference buoy are measured by the screenshots taken by the drone, according to the proportional relationship between the positional relationships in the same reference system, the length of the drop point interval in the screenshot (11, 12…1 (n-1) ) and the proportional relationship between the reference distance length (l) and the actual landing point distance measurement distance (L1, L2…L (n-1) ) is consistent with the proportional relationship between the actual reference object spacing distance (L). Therefore, we can get:

[0066] 11 / 1=L1 / L,

[0067] …

[0068] 1 (n-1) / 1=L (n-1) / L.

[0069] The distance between two adjacent landing points is obtained as:

[0070] L1=L×11 / 1,

[0071] …

[0072] L (n-1) = L×1 (n-1) / 1 (Formula 2)

[0073] (4) Formation parameter calculation and evaluation

[0074] According to the principle of depth charge defense, the effectiveness of the bomb array depends mainly on the projection area formed by the bomb array on the torpedo's forward route. The projection area is mainly represented by the horizontal projection length and the vertical projection length. The horizontal projection length determines the azimuth coverage of the torpedo relative to the platform, and the vertical projection length determines the coverage of the torpedo's navigation depth. The vertical projection length is generally taken as twice the depth charge damage radius, that is, 2r. Figure 1 and Figure 2 It can be seen that the horizontal projection of the distance between adjacent landing points in the bullet array is the projection of the distance between adjacent landing points in the horizontal direction, that is, on the X-axis.

[0075] Combination Figure 2 As shown, according to the location of the landing point measured in step (3), the length l between the landing point and the intersection of the coordinate axis 1y , l 2y …l ny and l 1x , l 2x …l nx , the projection distance L of the distance between two adjacent landing points on the horizontal direction of the incoming target x1 , L x2 …L xn The relationship is:

[0076] (l 2x -l 1x ) / l=L x1 / L

[0077] …

[0078] (l nx -l (n-1)x ) / l=L x(n-1) / L

[0079] Calculate the horizontal projection distance L of the distance between adjacent landing points x1 , L x2 …L x(n-1) .

[0080] L x1 =L×(l 2x -l 1x ) / l

[0081] …

[0082] L x(n-1) =L×(l nx -l (n-1)x ) / l (Formula 3)

[0083] Find the sum of the lengths of the horizontal projections of each landing point in the bullet array.

[0084] First, determine whether the horizontal projection length of the distance between each adjacent drop point reaches 2 times the damage radius of the depth bomb. If it is not less than 2 times the damage radius of the depth bomb, then the horizontal projection length is taken as 2 times the damage radius; if it is less than 2 times the damage radius of the depth bomb, then the projection length is directly taken. Sum the values ​​to find the interception range length L formed by the depth bomb array in the horizontal direction. (x-all) .

[0085] If L x(i) ≥2r, then L x(i) =2r;

[0086] If L x(i) <2r, then L x(i) =L x(i) ;

[0087] Then L (x-all) =L x1 +L x2 +…+L x(n-1) (Formula 4)

[0088] Where, L x(i) It represents the projection length of the distance between the ith adjacent impact points in the X-axis direction, i=1, 2, 3...n-1; r represents the depth bomb damage radius.

[0089] According to the solved L (x-all) The length of the interception area formed by the depth charge array on the forward path of the incoming torpedo can be determined.

[0090] The present invention proposes a method for measuring the distance between adjacent landing points of a suspended depth charge array under offshore conditions. The method arranges buoy reference objects under offshore conditions, uses the position ratio relationship between the aerial photography depth charge landing point and the buoy position, establishes a rectangular coordinate system, and measures the distance between two adjacent depth charges in the array. This provides support for the evaluation of the effect of the depth charge array and lays the foundation for the combat use of the depth charge and the evaluation of its combat effectiveness.

[0091] The following example takes the measurement of the distance between adjacent landing points of a small-caliber suspended depth bomb array as an example:

[0092] (1) Reference area selection and placement

[0093] A sea area in the north was selected as the test site, with sea conditions not exceeding level three. A test ship was selected as the launch platform, and the launch equipment was installed. The launch reference was set as point A. In order to simplify the processing flow, the test ship's heading was adjusted to due north, and the distance D between the center point of the depth bomb array and point A was 1200m. Two rows of buoys were laid at a position symmetrically in front and back of the center point of the depth bomb array, perpendicular to the direction of the incoming torpedo route. The static longitudinal dispersion error of the depth bomb is about 11 meters at 1200 meters. The interval distance L = 50m between each row of buoys was selected, and the interval distance between every two buoys in the same row was the same as L = 50m. The required width of the depth bomb array is about 280m at 1200m, so the cumulative coverage width of multiple buoys is about 380m. They are laid at intervals of 50m, and 8 buoys are laid in each row. That is, a total of 16 buoys are laid, distributed in two rows, 8 in each row, and the spacing between rows and within rows is 50m.

[0094] (2) Measurement of landing point position parameters

[0095] The launching equipment calculates the launching parameters according to the depth charge array deployment distance D and other parameters, and waits for the ammunition to be launched.

[0096] The aerial photography drone was launched, flew to the air above the missile array deployment distance point, hovered at an altitude of about 800m, and aimed at the buoy reference area to record from a bird's-eye view.

[0097] The launch equipment launches the depth charge according to the calculated launch parameters. After launching a group of depth charges, the drone is retrieved, the recorded content is played back, and the footage of each depth charge entering the water is screenshoted and numbered and saved in sequence.

[0098] (3) Calculation of distance between adjacent landing points

[0099] Process the numbered screenshots separately. Connect the buoy positions in the image to form a coverage grid, and select the buoy position in the lower left corner as the origin to establish an XY coordinate system. n Draw perpendicular lines to the X and Y axes of the coordinate system and measure B1B in the figure 1y 、B2B 2y …B n B ny The length of 1x , l 2x …l nx , fill in the data in the "X-axis projection length" of Table 1; measure B1B 1x 、B2B 2x …B n B nx The length of 1y , l 2y …l ny ; Fill in the data in the "Y-axis projection length" data row in Table 1.

[0100] According to (Formula 1), the length of the interval between adjacent landing points can be obtained as 11, 12…1 (n-1) , fill in the "Length between adjacent landing points" in the data row of Table 1.

[0101] Measure three groups of data on the length of the interval between the two buoys on the graph, and calculate the average value, which is recorded as l = 1.82 cm.

[0102] According to (Formula 2), the actual distance between adjacent landing points L1, L2…L (n-1) , fill in the "Distance between adjacent landing points" in the data row of Table 1.

[0103] Table 1 A set of bullet array landing point data measurement record table

[0104]

[0105] (4) Formation parameter calculation and evaluation

[0106] Combining (Equation 3) with the data measured in the previous step, 1x , l 2x …l nx and l 1y , l 2y …l ny ; Calculate the horizontal projection distance L of the distance between each adjacent landing point x1 , L x2 …L x(n-1) , the data is recorded in the data row "X-axis projection spacing distance" in Table 1.

[0107] According to the two rows of data "X-axis projection length" and "Y-axis projection length" in Table 1, each landing point is drawn in the rectangular coordinate system to form a layout diagram as shown below: Figure 3 shown.

[0108] The damage radius of a small-caliber suspended depth bomb is r = 14m. Based on the above calculation data, it can be determined that the horizontal projection distance of the distance between some adjacent drop points is greater than 2r. This part of the data is replaced by the 2r value. According to (Formula 4), the interception range length value L of the bomb array is obtained. (x-all) =234m.

[0109] Since the depth bombs at the two ends of the array each have a semicircular coverage area that is not included in the projection length calculation, the effective range of the entire array needs to extend outward by a damage radius, which is L (x-all)+ +2r=234m+28m=262m.

[0110] In summary, the present invention considers proposing a method for measuring the position of a depth charge at the moment of entry into the water and the distance between adjacent landing points under sea test conditions, utilizing a set buoy reference object, which changes dynamically with the ocean environment and keeps consistent with the position change law of the landing point, and adopts drone aerial photography to measure the position of the ammunition landing point at the moment of entry into the water and the distance between adjacent landing points, thereby evaluating the depth charge formation and supporting the effectiveness evaluation of suspended depth charges and combat use research.

[0111] The above is only a typical theoretical implementation example of the present invention, and does not limit the present invention in any form or application conditions. Those skilled in the art can use the above technical content to make some simple modifications such as coordinate position translation, number of array landing points, and change of interval distance projection value. Equivalent changes or modifications all fall within the protection scope of the present invention.

Claims

1. A method for measuring the distance between adjacent landing points of a suspended depth bomb array, characterized in that: The following steps are involved: (1) Selection and deployment of buoy reference areas Under the conditions of sea trials, a surface ship with a certain displacement is selected as the launch platform, and the launch equipment is installed on the launch platform; Determine the center point of the depth charge array, and use the center point as the center to symmetrically deploy two rows of buoys in the longitudinal direction as a reference. The longitudinal spacing between the two rows of buoys is 3 to 5 times the longitudinal dispersion error of the depth charge. The transverse spacing between the buoys should be consistent with the longitudinal spacing or set in combination with the transverse dispersion error of the depth charge as needed. The buoy reference area should cover the dispersion error range of the depth charge when the depth charge is deployed at the center point. (2) Measurement of landing point position parameters The aerial photography drone is launched into the air, flies to the center of the missile array, hovers at a certain height, covers and aims at the buoy reference area, and shoots from a bird's-eye view; Determine the distance D between the center point of the depth charge array and the launch platform. The launch equipment calculates the launch parameters based on the distance D, launches the depth charge, and arranges the depth charge array. The aerial drone obtains images of each depth charge at the moment of entering the water. (3) Calculation of distance between adjacent landing points An XY coordinate system is established in the image, with the vertical direction of the forward path of the attacking torpedo as the X axis and the opposite direction of the forward path of the attacking torpedo as the Y axis; the landing point of each depth bomb is obtained from the image of each depth bomb entering the water; Draw a perpendicular line from the depth bomb landing point to the X-axis and Y-axis of the coordinate system, and obtain the projection length of the depth bomb landing point in the image on the X-axis and Y-axis, which are respectively recorded as l 1x , l 2x …l nx , l 1y , l 2y …l ny ; Among them, l 1x <l 2x <…<l nx , n represents the total number of depth bombs; Calculate the interval length between two adjacent landing points in the array in the coordinate system 11, 12...1 (n-1) for: 11＝((l 2x -l 1x ) 2 +(l 2y -l 1y ) 2 ) 1 / 2 …… 1 (n-1) =((l nx -l (n-1)x ) 2 +(l ny -l (n-1)y ) 2 ) 1 / 2 (Equation 1) Obtain the distance between the two buoys in the image, denoted as l; Calculate the actual distance between two adjacent landing points: L1=L×11 / 1, …… L (n-1) = L×1 (n-1) / 1 (Formula 2) Where L represents the actual distance between the two buoys; L1, L2…L (n-1) The actual distance between two adjacent landing points; (4) Formation parameter calculation and evaluation Calculate the projection distance L of the distance between each adjacent landing point in the X-axis direction x1 , L x2 …L x(n-1) for: L x1 =L×(l 2x -L 1x ) / L …… L x(n-1) =L×(l nx -l (n-1)x ) / l (Formula 3) Calculate the interception range length L formed by the deep bomb array in the X-axis direction (x-all) ; First, determine whether the projection length value of the distance between each adjacent landing point in the X-axis direction reaches 2 times the depth bomb damage radius. If it is not less than 2 times the depth bomb damage radius, the projection length in the X-axis direction is taken as 2 times the depth bomb damage radius; if it is less than 2 times the depth bomb damage radius, the projection length in the X-axis direction is directly taken as the value; sum up each value to find the interception range length value L formed by the deep bomb array in the X-axis direction (x-all) : If L x(i) ≥2r, then L x(i) =2r; If L x(i) <2r, then L x(i) =L x(i) ; Then L (x-all) =L x1 +L x2 +…+L x(n-1) (Formula 4) Where, L x(i) represents the projection length of the distance between the ith adjacent impact points in the X-axis direction, i=1, 2, 3...n-1; r represents the damage radius of the depth bomb; According to the solved L (x-all) Get the length of the interception area formed by the depth charge array on the forward path of the incoming torpedo.

2. The method for measuring the distance between adjacent landing points of a suspended depth bomb array according to claim 1 is characterized in that: The launching equipment shall use the actual installed equipment or a prototype that is consistent with the actual installed status, and complete the depth charge launch according to the actual installation launching process.

3. The method for measuring the distance between adjacent landing points of suspended depth bomb array according to claim 1 is characterized in that: The buoy reference area is extended by 20% of the array deployment width at both ends as the lateral coverage margin.

4. The method for measuring the distance between adjacent landing points of a suspended depth bomb array according to claim 1 is characterized in that: Add weight under each buoy.

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