A method, apparatus and system for rapid positioning of a rescue ship for freshwater whales

Abstract

This invention relates to the field of shipbuilding and other watercraft technology, specifically to a rapid positioning method, device, and system for rescue vessels carrying freshwater cetaceans. The method includes: acquiring sample data; dividing the monitoring area into several blocks; determining the frequency of each block in the sample data as a primary activity block based on the number and duration of finless porpoise appearances; determining the importance of each block for finless porpoise behavior analysis at the current moment based on the frequency; obtaining the proportion of abnormal finless porpoises based on their behavioral characteristics; determining the degree of abnormality of any block at the current moment based on the proportion of abnormal finless porpoises; determining the abnormal response coefficient of any block at the current moment based on the degree and importance of abnormality; and positioning the vessel based on the abnormal response coefficient. This invention enables rapid positioning of cetaceans, shortening rescue response time and improving rescue efficiency.

Description

Technical Field

[0001] This invention relates to the field of ship or other watercraft technology, and specifically to a rapid positioning method, device and system for rescue vessels used for freshwater whales. Background Technology

[0002] In recent years, environmental changes and human activities have had a detrimental impact on the living environment of freshwater cetaceans. In order to protect freshwater cetaceans, various regions have established protection organizations such as rescue teams to provide timely protection and rescue for whales that have encountered accidents, such as stranding or becoming sick, through fixed-point patrols and receiving distress calls.

[0003] However, existing patrol and protection methods are somewhat delayed. Whales can only be discovered when they are in distress or in danger, either through staff patrols or by receiving distress calls from the public. If whales that have suffered an accident are not rescued in a timely manner or if the rescue is not done professionally, they may suffer secondary injuries. By monitoring the condition of whales in real time, abnormal whales can be detected in a timely manner and located quickly. This can significantly shorten the rescue response time, reduce the possibility of secondary injuries, improve the success rate of rescue, and protect the biodiversity of freshwater ecosystems. Summary of the Invention

[0004] This invention provides a method, device, and system for rapid positioning of rescue vessels for freshwater cetaceans, in order to solve existing problems.

[0005] The present invention provides a rapid positioning method, device, and system for rescue vessels used for freshwater cetaceans, employing the following technical solution:

[0006] One embodiment of the present invention provides a rapid positioning method for rescue vessels used for freshwater cetaceans, the method comprising the following steps:

[0007] Sample data of finless porpoise behavior indicators were obtained during the data collection period, and the monitoring area was divided into several blocks;

[0008] Based on the number and duration of finless porpoise appearances, the importance index of any block in the sample data on any given day for finless porpoise behavior analysis is determined. Based on the importance index, the frequency of each block in the sample data as a primary activity block is determined. The sample data is divided into several seasons and time periods, and the frequency of each block in the sample data as a primary activity block in different seasons and time periods is determined. Based on the frequency of each block as a primary activity block in all time periods and in different seasons and time periods of the sample data, the importance of each block for finless porpoise behavior analysis at the current moment is determined.

[0009] Based on the behavior characteristics of finless porpoises, the behavior intensity of any finless porpoise in different blocks of the sample data at any time period is determined, and then the activity level of finless porpoises in different blocks of the sample data at any time period is determined based on the behavior intensity.

[0010] The number of abnormal finless porpoises is determined based on their activity intensity and level, thereby determining the proportion of abnormal finless porpoises. The degree of abnormality of any block at the current moment is determined based on the proportion of abnormal finless porpoises. The abnormality response coefficient of any block at the current moment is determined based on the degree of abnormality and importance of any block at the current moment, and then the location is determined based on the abnormality response coefficient of the block.

[0011] Furthermore, the specific method for determining the importance index of any block in the sample data on any day for the analysis of finless porpoise behavior, and determining the frequency of each block in the sample data as a major activity block based on the importance index, includes:

[0012] Based on the number and duration of finless porpoise appearances, the importance index of any block of sample data on any day for the analysis of finless porpoise behavior was determined.

[0013] The importance index of each block in the sample data for the analysis of finless porpoise behavior is calculated for each day. A first threshold is preset. When the importance index is greater than the preset first threshold, the corresponding block is regarded as the main activity block of the finless porpoise on that day. Based on the main activity blocks in the sample data for each day, the frequency of each block in the sample data as the main activity block for each day is determined.

[0014] Furthermore, the specific method for calculating the importance index of any block of the sample data on any day for the analysis of finless porpoise behavior is as follows:

[0015] Y r,i =norm(t) r,i ×n r,i )

[0016] In the formula, Y r,i t represents the importance index of the i-th block in the sample data on day r for the analysis of finless porpoise behavior; r,i This represents the duration of the appearance of the Yangtze finless porpoise in the i-th block of the sample data on day r; n r,i This represents the number of finless porpoises appearing in the i-th block of the sample data on day r; norm() represents the normalization function.

[0017] Furthermore, the specific calculation method for determining the importance of each block for the analysis of finless porpoise behavior at the current moment is as follows:

[0018]

[0019] In the formula, Z iThis indicates the importance of the i-th block at the current moment for the analysis of finless porpoise behavior; fl i This represents the frequency with which the i-th block of the sample data is the primary active block within the data collection period; fj i fs represents the frequency with which the i-th block is the primary active block within the current season; i This indicates the frequency of the i-th block as the primary active block within the current time period; norm[] represents the normalization function;

[0020] fj i and fs i The method of obtaining fl i The method for obtaining them is the same.

[0021] Furthermore, the specific method for determining the activity intensity of any finless porpoise in different blocks of the sample data at any time period, and then determining the activity level of the finless porpoise in different blocks of the sample data within any time period based on the activity intensity, includes:

[0022] Based on the swimming speed, turning frequency, and activity frequency of the finless porpoise, the activity intensity of any finless porpoise in different blocks within any time period in the sample data was determined.

[0023] The mean of the activity intensity of all finless porpoises in each block at different time periods is calculated to represent the activity level of finless porpoises in different blocks within any time period of the sample data.

[0024] Furthermore, the specific method for calculating the activity intensity of any finless porpoise in different blocks within any time period in the sample data is as follows:

[0025] QD a,b,j =v a,b,j ×f a,b,j ×HD a,b,j

[0026] In the formula, QD a,b,j This represents the activity intensity of the j-th finless porpoise within the b-th time period of the a-th block in the sample data; v a,b,j f represents the swimming speed of the j-th finless porpoise within the b-th time period of the a-th block in the sample data; a,b,j This represents the turning frequency of the j-th finless porpoise within the b-th time period of the a-th block in the sample data; HD a,b,j This represents the activity frequency of the j-th finless porpoise within the b-th time period of the a-th block in the sample data.

[0027] Furthermore, the specific method for determining the anomaly level of any block at the current time, determining the anomaly response coefficient of any block at the current time based on the anomaly level and importance of that block, and then locating the block based on its anomaly response coefficient is as follows:

[0028] Calculate the proportion of abnormal finless porpoises in any block at the current time as the degree of abnormality of any block at the current time. Based on the degree of abnormality and the importance of any block at the current time, determine the abnormal response coefficient of any block at the current time.

[0029] A third threshold is preset. If the anomaly coefficient of the i-th block at the current time is greater than the preset third threshold, then the finless porpoise in the i-th block at the current time is abnormal, and the block with the finless porpoise anomaly is located.

[0030] Furthermore, the specific calculation method for the anomaly response coefficient of any block at the current moment is as follows:

[0031] XY i =norm(YC i ×Z i )

[0032] In the formula, XY i YC represents the anomaly coefficient of the i-th block at the current time. i Z represents the anomaly level of the i-th block at the current time; i This indicates the importance of the i-th block at the current time; norm() represents the normalization function.

[0033] A rapid positioning system for a rescue vessel for freshwater cetaceans, employing any one of the rapid positioning methods for a rescue vessel for freshwater cetaceans, the system comprising the following modules:

[0034] The data acquisition module is used to acquire sample data of the behavior indicators of the finless porpoise and divide the monitoring area into several blocks;

[0035] The importance analysis module is used to determine the importance of any block in the sample data on any given day to the analysis of finless porpoise behavior based on the number and duration of finless porpoise appearances. Based on the importance, it determines the frequency of each block in the sample data as a major activity block. The sample data is divided into several seasons and time periods, and the frequency of each block in the sample data as a major activity block in different seasons and time periods is determined. Based on the frequency of each block as a major activity block in all time periods and in different seasons and time periods of the sample data, the importance of each block to the analysis of finless porpoise behavior at the current moment is determined.

[0036] The block type determination module is used to determine the activity level of finless porpoises in different blocks within any time period of the sample data based on their behavioral characteristics, and to mark the block type according to the activity level to determine the block type;

[0037] The positioning module is used to determine the behavior of the finless porpoise within the current block. Based on the proportion of abnormal finless porpoises in any block at the current time, it determines the degree of abnormality of any block at the current time. Based on the degree of abnormality and importance of any block at the current time, it determines the abnormal response coefficient of any block at the current time, and performs rapid positioning based on the abnormal response coefficient of the block.

[0038] A rapid positioning device for a rescue vessel for freshwater cetaceans includes a rapid positioning device and a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements any of the steps of the rapid positioning method for a rescue vessel for freshwater cetaceans.

[0039] The beneficial effects of the technical solution of this invention are as follows: Based on the number and duration of finless porpoise appearances, the importance of any block in the sample data for finless porpoise behavior analysis on any given day is determined. Based on this importance, the frequency of each block in the sample data as a primary activity block is determined. The sample data is divided into several seasons and time periods, and the frequency of each block as a primary activity block in different seasons and time periods is determined. Based on the frequency of each block as a primary activity block throughout all time periods and in different seasons and time periods of the sample data, the importance of each block for finless porpoise behavior analysis at the current moment is determined. This helps to distinguish blocks and, based on the finless porpoise's behavioral characteristics, determine the activity level of finless porpoises in different blocks within any time period of the sample data. Based on the proportion of abnormal finless porpoises in any block at the current moment, the degree of abnormality of any block at the current moment is determined. Based on the degree of abnormality and importance of any block at the current moment, the abnormal response coefficient of any block at the current moment is determined. Based on the abnormal response coefficient of the block, rapid location is achieved, quickly finding abnormal finless porpoises, reducing the duration of abnormality, accelerating rescue operations, and improving the success rate of rescue. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a flowchart illustrating the steps of a rapid positioning method for a rescue vessel used for freshwater cetaceans according to the present invention.

[0042] Figure 2 This is a structural block diagram of a rapid positioning system for a rescue vessel for freshwater cetaceans according to the present invention;

[0043] Figure 3 This is a structural block diagram of a rapid positioning device for a rescue vessel for freshwater whales according to the present invention. Detailed Implementation

[0044] To further illustrate the technical means and effects adopted by the present invention to achieve its intended purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation, structure, features, and effects of a rapid positioning method, device, and system for freshwater cetacean rescue vessels proposed according to the present invention. In the following description, different "one embodiment" or "another embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0046] The following description, in conjunction with the accompanying drawings, details a specific solution for a rapid positioning method, device, and system for freshwater whale rescue vessels provided by the present invention.

[0047] Please see Figure 1 The diagram illustrates a flowchart of a rapid positioning method for a rescue vessel used for freshwater cetaceans, according to an embodiment of the present invention. The method includes the following steps:

[0048] Step S001: Obtain sample data of finless porpoise behavior indicators during the data collection period and divide the monitoring area into several blocks.

[0049] To implement the rapid positioning method for rescue vessels targeting freshwater cetaceans proposed in this embodiment, it is first necessary to acquire behavioral index data of the finless porpoise, including location information, swimming speed, diving depth, and surface jumping frequency. The specific process is as follows:

[0050] First, the common areas of the finless porpoise are identified as monitoring areas. Based on the maximum receiving range of the sonar used to receive the porpoise's acoustic signals, the monitoring area is divided into several blocks, each of which is numbered. The side length of each block is equal to the maximum signal receiving range of the sonar. Then, the acoustic signals emitted by the finless porpoises in each block are continuously collected using sonar. Based on these acoustic signals, behavioral indicators such as swimming speed, diving depth, and frequency of jumping on the water surface are obtained. The data collection period is one year, and all the collected data is called the sample data of finless porpoise behavioral indicators.

[0051] Thus, sample data of the behavioral indicators of the Yangtze finless porpoise were obtained through the above methods.

[0052] Step S002: Based on the number and duration of finless porpoise appearances, determine the importance index of any block in the sample data for finless porpoise behavior analysis on any given day. Based on the importance index, determine the frequency of each block in the sample data as a primary activity block. Divide the sample data into several seasons and time periods, and determine the frequency of each block in the sample data as a primary activity block in different seasons and time periods. Based on the frequency of each block as a primary activity block in all time periods and in different seasons and time periods of the sample data, determine the importance of each block for finless porpoise behavior analysis at the current moment.

[0053] Step (2.1): Based on the number and duration of finless porpoise appearances, determine the importance index of any block in the sample data on any day for the analysis of finless porpoise behavior. Based on the importance index, determine the frequency of each block in the sample data as the main activity block. Divide the sample data into several seasons and time periods, and determine the frequency of each block in the sample data as the main activity block in different seasons and time periods.

[0054] It should be noted that even in areas where finless porpoises are commonly found, they do not appear everywhere. Instead, they have certain main activity areas. For example, in the Poyang Lake area, due to factors such as water level changes, food resources, and human activities, finless porpoises mainly gather in areas such as Yangzizhou Finless Porpoise Bay and the lower reaches of Poyang Lake. Therefore, it is necessary to determine the main activity areas of finless porpoises based on the importance of each area to the analysis of finless porpoise behavior.

[0055] Specifically, firstly, based on the number and duration of finless porpoise appearances, the importance of any block of sample data on any given day for the analysis of finless porpoise behavior is determined.

[0056] As one example, the specific method for calculating the importance index of any block of sample data on any day for the analysis of finless porpoise behavior is as follows:

[0057] Y r,i =norm(t) r,i ×n r,i )

[0058] In the formula, Y r,i t represents the importance index of the i-th block in the sample data on day r for the analysis of finless porpoise behavior; r,i This represents the duration of the appearance of the Yangtze finless porpoise in the i-th block of the sample data on day r; n r,i This represents the number of finless porpoises appearing in the i-th block of the sample data on day r; norm() represents the normalization function.

[0059] It should be noted that the duration and number of finless porpoises appearing in the i-th block of the sample data on day r are positively proportional to the importance index of the i-th block of the sample data on day r for the analysis of finless porpoise behavior. That is, when tr,i and n r,i The larger the value, the greater the importance index of the block for the analysis of finless porpoise behavior, i.e., Y. r,i The larger.

[0060] Then, the importance index of each block in the sample data for the analysis of finless porpoise behavior is calculated for each day. A first threshold is preset. When the importance index is greater than the preset first threshold, the corresponding block is regarded as the main activity block of the finless porpoise on that day. Based on the main activity blocks in the sample data for each day, the frequency of the i-th block as the main activity block within the corresponding data collection time is determined, denoted as fl. i .

[0061] It should be noted that the first threshold is preset to 0.6 based on experience, and can be adjusted according to the actual situation. This embodiment does not impose any specific limitations.

[0062] Finally, using A hours as a time period and these time periods as intervals, each day is divided into several time periods. Following the steps above, the importance index of each block within each season and each time period for the analysis of finless porpoise behavior is obtained from the sample data. The frequency of each block as a primary activity area within each season and the frequency of each block as a primary activity area within each time period are denoted as fj, respectively. i and fs i .

[0063] It should be noted that, based on experience, the value of A is 6 hours, which can be adjusted according to the actual situation. This embodiment does not impose any specific limitations.

[0064] Step (2.2) determines the importance of each block for the analysis of finless porpoise behavior at the current moment based on the frequency of each block as the main activity block in all time periods and in different seasons and time periods of the sample data.

[0065] It should be noted that the activities of finless porpoises usually have certain patterns, so the importance of any block to the analysis of finless porpoise behavior at the current moment can be determined based on the activity of finless porpoises in different times and blocks in the sample data.

[0066] Specifically, any time after the data collection time is recorded as the current time. Based on the season and time period corresponding to the current time, the frequency of each block in the sample data as the main activity block and the frequency of each block in the sample data as the main activity block are used to determine the importance of the i-th block at the current time for the analysis of finless porpoise behavior.

[0067] As one example, the specific method for calculating the importance of the i-th block at the current moment for the analysis of finless porpoise behavior is as follows:

[0068]

[0069] In the formula, Z i This indicates the importance of the i-th block at the current moment for the analysis of finless porpoise behavior; fl i This represents the frequency with which the i-th block of the sample data is the primary active block within the data collection period; fj i fs represents the frequency with which the i-th block is the primary active block within the current season; i This indicates the frequency of the i-th block as the primary active block within the current time period; norm[] represents the normalization function.

[0070] It should be noted that fl i The larger the value of fj, the more frequently the i-th block is considered a major active block in the sample data. i and fs i The larger Z is, the more frequently the i-th block is considered a major active block within the season and time period corresponding to the current moment, indicating that the i-th block is more important at the current moment. i The larger the value.

[0071] Thus, the importance of each block for the analysis of finless porpoise behavior at the current moment has been obtained through the above method.

[0072] Step S003: Based on the behavior characteristics of the finless porpoise, determine the behavior intensity of any finless porpoise in different blocks of any time period in the sample data, and then determine the activity level of the finless porpoise in different blocks of any time period in the sample data based on the behavior intensity.

[0073] It should be noted that, influenced by factors such as seasonal changes, food resources, and the ecological environment, finless porpoises exhibit a certain degree of regional behavior during their daily activities. For example, they divide their activity areas into hunting areas, breeding areas, and resting areas, and exhibit different behavioral characteristics in different activity areas. For instance, in the hunting area, finless porpoises demonstrate the ability to sprint quickly and turn nimbly. Therefore, it is necessary to determine the activity level of finless porpoises in each block of the sample data at different times. The activity level of finless porpoises is usually determined by the intensity of their actions, which typically include swimming, turning, and other behaviors. Therefore, the activity level of finless porpoises can be determined based on their behavioral characteristics.

[0074] Specifically, firstly, based on the swimming speed, turning frequency, and activity frequency of the finless porpoises, the activity intensity of any finless porpoise in different blocks within any time period of the sample data is determined.

[0075] As one example, the specific method for calculating the activity intensity of any finless porpoise in different blocks within any time period in the sample data is as follows:

[0076] QD a,b,j =va,b,j ×f a,b,j ×HD a,b,j

[0077] In the formula, QD a,b,j This represents the activity intensity of the j-th finless porpoise within the b-th time period of the a-th block in the sample data; v a,b,j f represents the swimming speed of the j-th finless porpoise within the b-th time period of the a-th block in the sample data; a,b,j This represents the turning frequency of the j-th finless porpoise within the b-th time period of the a-th block in the sample data; HD a,b,j This represents the activity frequency of the j-th finless porpoise within the b-th time period of the a-th block in the sample data.

[0078] The method for calculating the activity frequency of the j-th finless porpoise in the b-th time period of the a-th block in the sample data is as follows: the ratio of the activity time to the rest time of the j-th finless porpoise in the b-th time period of the a-th block in the sample data.

[0079] It should be noted that in the sample data, the swimming speed, turning frequency, activity frequency, and activity intensity of the j-th finless porpoise within the b-th time period of the a-th block are directly proportional. The faster the swimming speed, the higher the turning frequency, and the higher the activity intensity of the finless porpoise in any time period, the higher its activity intensity, corresponding to QD. a,b,j The larger the value.

[0080] The mean of the activity intensity of all finless porpoises in each block at different time periods is calculated to represent the activity level of finless porpoises in different blocks within any time period of the sample data.

[0081] Thus, the above method was used to obtain the activity intensity of any finless porpoise in different blocks of any time period in the sample data and the activity level of finless porpoises in different blocks.

[0082] Step S004: Based on the intensity and activity level of the finless porpoises, the number of abnormal finless porpoises is obtained, thereby determining the proportion of abnormal finless porpoises. Based on the proportion of abnormal finless porpoises, the degree of abnormality of any block at the current moment is determined. Based on the degree of abnormality and importance of any block at the current moment, the abnormal response coefficient of any block at the current moment is determined. Then, the block is located based on the abnormal response coefficient.

[0083] It should be noted that sample data can reveal certain patterns in the activity of finless porpoises within any block at any given time. By comparing the behavior of finless porpoises in any block at the current time with the behavior of finless porpoises in the same block during the same time period in the sample data, abnormal behavior of finless porpoises in any block at the current time can be determined. This allows us to determine the proportion of abnormal finless porpoises in any block at the current time. By combining this with the importance of any block at the current time, we can determine the abnormal response coefficient of any block at the current time. Based on the abnormal response coefficient, we can identify abnormal blocks and quickly locate rescue boats.

[0084] First, obtain the activity intensity of the d-th finless porpoise in the c-th block within the current time period. Calculate the absolute value of the difference between the activity intensity of the d-th finless porpoise in the c-th block within the current time period and the activity level of finless porpoises in the c-th block within the same time period in the sample data. When the absolute value of the difference is less than a preset second threshold, the d-th finless porpoise in the c-th block within the current time period is recorded as an abnormal finless porpoise.

[0085] Then, the proportion of abnormal finless porpoises in any block at the current time is calculated as the degree of abnormality of any block at the current time. Based on the degree of abnormality and the importance of any block at the current time, the abnormal response coefficient of any block at the current time is determined.

[0086] As one example, the specific method for calculating the anomaly coefficient of any block at the current time is as follows:

[0087] XY i =norm(YC i ×Z i )

[0088] In the formula, XY i YC represents the anomaly coefficient of the i-th block at the current time. i Z represents the anomaly level of the i-th block at the current time; i This indicates the importance of the i-th block at the current time; norm() represents the normalization function.

[0089] It should be noted that the degree and importance of the anomaly of the i-th block at the current moment are directly proportional to the anomaly response coefficient of the i-th block at the current moment, YC i and Z i The larger the value of XY, the larger the anomaly coefficient of the i-th block at the current time, i.e., XY i The larger the value, the better.

[0090] Finally, a third threshold is preset. If the anomaly coefficient of the i-th block at the current time is greater than the preset third threshold, then the finless porpoise in the i-th block at the current time is abnormal, and the block with the finless porpoise anomaly is quickly located.

[0091] It should be noted that, based on experience, the second and third thresholds are preset to 0.5 and 0.4 respectively, which can be adjusted according to the actual situation. This embodiment does not impose specific limitations.

[0092] By following the steps above, the rescue vessel for freshwater cetaceans can be quickly located.

[0093] Secondly, please refer to Figure 2 It illustrates a rapid positioning system for freshwater cetacean rescue vessels, which includes the following modules:

[0094] The data acquisition module is used to acquire sample data of the behavior indicators of the finless porpoise during the data collection period and divide the monitoring area into several blocks;

[0095] The importance analysis module is used to determine the importance index of any block in the sample data for the analysis of finless porpoise behavior on any given day, based on the number and duration of finless porpoise appearances. Based on the importance index, it determines the frequency of each block in the sample data as a major activity block. The sample data is divided into several seasons and time periods, and the frequency of each block in the sample data as a major activity block in different seasons and time periods is determined. Based on the frequency of each block as a major activity block in all time periods and in different seasons and time periods of the sample data, the importance of each block for the analysis of finless porpoise behavior at the current moment is determined.

[0096] The block type determination module is used to determine the activity intensity of any finless porpoise in different blocks of any time period in the sample data based on the activity characteristics of the finless porpoise, and then determine the activity level of the finless porpoise in different blocks of any time period in the sample data based on the activity intensity.

[0097] The positioning module is used to determine the number of abnormal finless porpoises based on their activity intensity and level, thereby determining the proportion of abnormal finless porpoises. Based on the proportion of abnormal finless porpoises, it determines the degree of abnormality of any block at the current time. Based on the degree of abnormality and importance of any block at the current time, it determines the abnormal response coefficient of any block at the current time, and then positions the block based on the abnormal response coefficient.

[0098] Thirdly, please refer to Figure 3 The present invention also proposes a rapid positioning device for freshwater cetacean rescue vessels. The device includes a rapid positioning device and a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the steps of the method described in steps S001 to S004.

[0099] This embodiment determines the importance of any block in the sample data for finless porpoise behavior analysis based on the number and duration of porpoise appearances. Based on this importance, it determines the frequency of each block in the sample data as a primary activity area. The sample data is divided into several seasons and time periods, and the frequency of each block as a primary activity area in different seasons and time periods is determined. Based on the frequency of each block as a primary activity area across all time periods and in different seasons and time periods of the sample data, the importance of each block for finless porpoise behavior analysis at the current moment is determined. This helps to distinguish blocks and, based on the finless porpoise's behavioral characteristics, determine the activity level of finless porpoises in different blocks within any time period of the sample data. Based on the proportion of abnormal finless porpoises in any block at the current moment, the degree of abnormality of any block at the current moment is determined. Based on the degree of abnormality and importance of any block at the current moment, the abnormal response coefficient of any block at the current moment is determined. Based on the abnormal response coefficient of the block, rapid location is achieved, quickly finding abnormal finless porpoises, reducing the duration of abnormalities, accelerating rescue operations, and improving the success rate of rescue.

[0100] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for rapid positioning of a rescue ship for freshwater whales, characterized in that, The method comprises the following steps: Acquire sample data of the behavior index of the finless porpoise in the data collection time, and divide the monitoring area into a plurality of blocks; According to the number and duration of the finless porpoise, determine the importance index of any block in the sample data on any day for the behavior analysis of the finless porpoise, determine the frequency of each block in the sample data as a main activity block according to the importance index, divide the sample data into a plurality of seasons and time periods, determine the frequency of each block in the sample data as a main activity block in different seasons and time periods, and determine the importance of each block for the behavior analysis of the finless porpoise at the current time according to the frequency of each block as a main activity block in all times and in different seasons and time periods in the sample data; According to the action characteristics of the finless porpoise, determine the action intensity of any finless porpoise in different blocks in any time period in the sample data, and then determine the activity level of the finless porpoise in different blocks in any time period in the sample data based on the action intensity; According to the action intensity and the activity level of the finless porpoise, obtain the number of abnormal finless porpoises, determine the proportion of the abnormal finless porpoises, determine the abnormal degree of any block at the current time according to the proportion of the abnormal finless porpoises, and then determine the abnormal response coefficient of any block at the current time according to the abnormal degree and the importance of any block at the current time, and finally locate the block according to the abnormal response coefficient of the block.

2. A method for rapid positioning of a rescue ship for freshwater whales according to claim 1, characterized in that, The specific method for determining the importance index of any block in the sample data on any day for the behavior analysis of the finless porpoise and determining the frequency of each block in the sample data as a main activity block according to the importance index comprises the following steps: According to the number and duration of the finless porpoise, determine the importance index of any block in the sample data on any day for the behavior analysis of the finless porpoise; Calculate the importance index of each block in the sample data on any day for the behavior analysis of the finless porpoise, preset a first threshold value, when the importance index is greater than the preset first threshold value, the corresponding block is taken as a main activity block of the finless porpoise on that day, and the frequency of each block in the sample data as a main activity block is determined according to the main activity block of each day in the sample data.

3. A method for rapid positioning of a rescue ship for freshwater whales according to claim 2, characterized in that, The specific calculation method for the importance index of any block in the sample data on any day for the behavior analysis of the finless porpoise comprises the following steps: Y r,i = norm(t r,i ×n r,i ) In the formula, Y r,i represents the importance index of the i-th block in the r-th day of sample data to the behavior analysis of the dolphin; t r,i denotes the duration of the occurrence of the Dugong in the i-th block of the r-th day of the sample data; n r,i denotes the number of appearance of the finless porpoise in the i-th block in the r-th day of the sample data; norm() denotes a normalization function.

4. A method for rapid positioning of a rescue ship for freshwater whales according to claim 2, characterized in that, The specific calculation method for the importance of each block for the behavior analysis of the finless porpoise at the current time comprises the following steps: wherein Z i represents the importance of the i-th block to the behavior analysis of the river dolphin at the current time; fi i represents the frequency of the i-th block as the main activity block in the data collection time corresponding to the sample data; fj i represents the frequency of the i-th block as the main activity block in the season in which the current time is located; fs i represents the frequency of the i-th block as the main activity block in the time period in which the current time is located; norm[] represents a normalization function; fj i and fs i The acquisition method of fl i is consistent with that of fj 5. The method of quickly locating a rescue ship for freshwater whales according to claim 1, wherein According to the action characteristics of the finless porpoise, determine the action intensity of any finless porpoise in different blocks in any time period in the sample data, and then determine the activity level of the finless porpoise in different blocks in any time period in the sample data based on the action intensity; According to the action characteristics of the finless porpoise, determine the action intensity of any finless porpoise in different blocks in any time period in the sample data, and then determine the activity level of the finless porpoise in different blocks in any time period in the sample data based on the action intensity; The specific calculation method for the action intensity of any finless porpoise in different blocks in any time period in the sample data comprises the following steps:

6. A method of rapid positioning of a rescue ship for freshwater whales according to claim 5, characterized in that, ​ QD a,b,j = v a,b,j x f a,b,j x HD a,b,j In the formula, QD a,b,j represents the action intensity of the jth Yangtze finless porpoise in the bth time period in the ath block in the sample data; v a,b,j represents the swimming speed of the jth Yangtze finless porpoise in the bth time period in the ath block in the sample data; f a,b,j represents the turning frequency of the jth Yangtze finless porpoise in the bth time period in the ath block in the sample data; HD a,b,j represents the activity frequency of the jth Yangtze finless porpoise in the bth time period in the ath block in the sample data.

7. A method for rapid positioning of a rescue ship for freshwater whales according to claim 1, characterized in that, The determination of the abnormal degree of any block at the current time, according to the abnormal degree and importance of any block at the current time, determines the abnormal response coefficient of any block at the current time, and then according to the abnormal response coefficient of the block, positioning, including the specific method is: The proportion of abnormal finless porpoises in any block at the current time is calculated as the abnormal degree of any block at the current time, and according to the abnormal degree of any block at the current time, the importance of any block at the current time, the abnormal response coefficient of any block at the current time is determined; A third threshold is preset, and when the abnormal coefficient of the i-th block at the current time is greater than the preset third threshold, the finless porpoises in the i-th block at the current time are abnormal, and the block with abnormal finless porpoises is positioned.

8. A method for rapid positioning of a rescue ship for freshwater whales according to claim 1, characterized in that, The specific calculation method of the abnormal response coefficient of any block at the current time is: XY i = norm(YC i × Z i ) In the formula, XY i represents the abnormality coefficient of the i-th block at the current time; YC i represents the abnormality degree of the i-th block at the current time. Z i represents the importance of the i-th block at the current time; norm() represents a normalization function.

9. A quick positioning system for a rescue boat for freshwater whales, which employs a quick positioning method for a rescue boat for freshwater whales according to any one of claims 1 to 8, characterized by The system comprises the following modules: The data acquisition module is used for acquiring sample data of finless porpoise behavior indicators, and dividing the monitoring area into several blocks; The importance analysis module is used for determining the importance of any block in sample data to finless porpoise behavior analysis according to the number and duration of finless porpoises, determining the frequency of each block in sample data as a main activity block according to the importance, dividing sample data into several seasons and time periods, determining the frequency of each block in sample data as a main activity block in different seasons and time periods, and determining the importance of each block to finless porpoise behavior analysis at the current time according to the frequency of each block as a main activity block in all time and different seasons and time periods in sample data; The block type determination module is used for determining the activity degree of finless porpoises in different blocks in any time period of sample data according to the action characteristics of finless porpoises, marking the block type according to the activity degree, and determining the block type; The positioning module is used for judging the behavior of finless porpoises in the block at the current time, determining the abnormal degree of any block at the current time according to the proportion of abnormal finless porpoises in any block at the current time, determining the abnormal response coefficient of any block at the current time according to the abnormal degree and importance of any block at the current time, and quickly positioning according to the abnormal response coefficient of the block.

10. A quick positioning device for a rescue ship for freshwater whales, comprising a quick positioning device and a memory, a processor, a computer program stored in the memory and executable on the processor, which the quick positioning device comprises, characterized in that, The processor executes the computer program to realize the steps of the method in any one of claims 1-8.

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