Signal transmission method and device in underwater environment and medium

Abstract

The invention relates to the technical field of signal transmission, in particular to a signal transmission method and device in an underwater environment and a medium. The method comprises the following steps: acquiring an initial information set A of a signal during underwater transmission; traversing A, and obtaining a first relation and a second relation corresponding to the signal of the nth preset wavelength according to An; acquiring an intermediate information set B when the signal is transmitted in the target water area; b is traversed, and according to the first relation and the second relation corresponding to the Bn and the signal of the nth preset wavelength, the attenuation coefficient alpha n, 1 of the signal of the nth preset wavelength influenced by suspended particles in water when the signal of the nth preset wavelength is transmitted in the target water area is obtained; predicting the residual power p3 when the target signal is transmitted from the first target position to the second target position in the target water area according to the alpha 1; if p3lt; and p1, judging that the transmission of the target signal in the target water area is failed. According to the invention, whether the target signal can be successfully transmitted or not is pre-judged before the target signal is transmitted.

Description

Technical Field

[0001] The present invention relates to the technical field of signal transmission, and in particular to a signal transmission method, device and medium in an underwater environment. Background Art

[0002] Although electromagnetic signals are transmitted better in the air, they face significant attenuation problems when transmitted in water. Compared with the characteristics of high-frequency electromagnetic signals (such as radio waves, microwaves, etc.) that attenuate very quickly in water, low-frequency electromagnetic signals (such as electromagnetic signals of several hundred hertz to several thousand hertz) attenuate more slowly in water; the attenuation coefficient of low-frequency electromagnetic signals in water will affect the power of low-frequency electromagnetic signals, and thus affect the strength of the signal. If the low-frequency electromagnetic signal received by the device receiving the low-frequency electromagnetic signal is weak, then the signal transmission is judged as a transmission failure. How to predict whether the signal can be transmitted successfully before the signal is transmitted is an urgent problem to be solved. Summary of the invention

[0003] The purpose of the present invention is to provide a signal transmission method, device and medium in an underwater environment, so as to predict whether a signal can be successfully transmitted before the signal is transmitted.

[0004] According to the present invention, a method for signal transmission in an underwater environment is provided, the method comprising the following steps:

[0005] S100, obtaining an initial information set A of the signal during underwater transmission, A={A1, A2, …, A n ,…,A N}, A n is the initial information set of the signal with the nth preset wavelength when it is transmitted underwater, A n ={a n,1 ,a n,2 ,…,a n,m ,…,a n,M}, a n,m is the initial information sequence when the signal of the nth preset wavelength is transmitted in the mth first-class water area, a n,m =(σ n,m ,ε n,m ,c n,m ,T n,m ), σ n,m is the conductivity of the signal with the nth preset wavelength when it is transmitted in the mth first-class water area, ε n,m is the dielectric constant of the signal with the nth preset wavelength when it is transmitted in the mth first-class water area, c n,m is the salt concentration of the mth first-class water area when the signal of the nth preset wavelength is transmitted in the mth first-class water area, T n,mIt is the temperature of the mth first-class water area when the signal of the nth preset wavelength is transmitted in the mth first-class water area; the value range of n is 1 to N, N is the number of preset wavelengths; the value range of m is 1 to M, M is the number of first-class water areas; the turbidity of any first-class water area is less than or equal to the preset turbidity threshold.

[0006] S200, traverse A, according to A n A first relationship and a second relationship corresponding to a signal of an n-th preset wavelength are obtained; the first relationship is a relationship between the salt concentration and temperature of the first type of water area and the conductivity, and the second relationship is a relationship between the salt concentration and temperature of the first water area and the dielectric constant.

[0007] S300, obtaining an intermediate information set B when the signal is transmitted under the target water area, B={B1, ​​B2, …, B n ,…,B N}, B n is the intermediate information sequence of the signal with the nth preset wavelength when it is transmitted under the target waters, B n =(p n,1 ,p n,2 ,d n,1 ,b n,1 ,b n,2 ), p n,1 is the initial power of the signal of the nth preset wavelength at the first preset position in the target waters, p n,2 is the residual power of the signal of the nth preset wavelength at the second preset position in the target waters, d n,1 is the distance between the first preset position and the second preset position, b n,1 is the salt concentration of the target water area when the signal of the nth preset wavelength is transmitted in the target water area, b n,2 It is the temperature of the target water area when the signal of the nth preset wavelength is transmitted in the target water area.

[0008] S400, traverse B, according to B n The first relationship and the second relationship corresponding to the signal of the nth preset wavelength obtain the attenuation coefficient α of the signal of the nth preset wavelength affected by suspended particles in the water when it is transmitted in the target water area n,1 .

[0009] S500, S500, predict the residual power p3 when the target signal is transmitted from the first target position in the target water area to the second target position based on α1; α1 is the attenuation coefficient of the signal matching the target signal when it is affected by suspended particles in the water when it is transmitted in the target water area, and the signal matching the target signal is a signal with a wavelength equal to the wavelength of the target signal among the signals of N preset wavelengths.

[0010] S600. If p3 < p1, it is determined that the target signal will fail to be transmitted in the target water area; p1 is a preset power threshold.

[0011] The present invention has at least the following beneficial effects compared with the prior art:

[0012] Based on the changes in salt concentration, temperature, and suspended particles during the underwater transmission of electromagnetic signals of different wavelengths, the present invention determines the losses of electromagnetic signals of different wavelengths during underwater transmission; first, the conductivity and permittivity of signals of different wavelengths during transmission in different waters with low turbidity (i.e., the first type of water area) are obtained; the temperatures and salt concentrations of different first-type water areas are different. Based on the conductivity and permittivity of signals of the same wavelength in the first-type water areas with different temperatures and salt concentrations, the present invention obtains the relationships between the temperature and salt concentration and conductivity, and the temperature and salt concentration and permittivity of signals of different wavelengths during transmission in the first-type water area; on this basis, the present invention also obtains the initial power, remaining power, and transmission distance of signals of different wavelengths during transmission in the target water area. Based on the initial power, remaining power, transmission distance, salt concentration, and temperature of the target water area of signals of different wavelengths, the attenuation coefficient of signals of different wavelengths affected by suspended particles in the target water area during transmission can be obtained; on this basis, the attenuation coefficient of a signal with the same wavelength as the target signal affected by suspended particles in the target water area during transmission is obtained, and this attenuation coefficient is determined as the attenuation coefficient of the target signal affected by suspended particles in the target water area during transmission; based on the attenuation coefficient of the target signal affected by suspended particles in the target water area during transmission, the remaining power of the target signal when it is transmitted to the second target position during transmission in the target water area can be predicted, and by comparing the remaining power with a preset power threshold, it can be determined whether the target signal can be successfully transmitted. Thus, the present invention realizes the pre-judgment of whether the target signal can be successfully transmitted before the target signal is transmitted. Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0014] Figure 1 It is a flowchart of the signal transmission method in the underwater environment provided in the first embodiment of the present invention. Detailed Embodiments

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0016] Embodiment 1:

[0017] According to this embodiment, Figure 1 As shown, a method for signal transmission in an underwater environment is provided, the method comprising the following steps:

[0018] S100, obtaining an initial information set A of the signal during underwater transmission, A={A1, A2, …, A n ,…,A N}, A n is the initial information set of the signal with the nth preset wavelength when it is transmitted underwater, A n ={a n,1 ,a n,2 ,…,a n,m ,…,a n,M}, a n,m is the initial information sequence when the signal of the nth preset wavelength is transmitted in the mth first-class water area, a n,m =(σ n,m ,ε n,m ,c n,m ,T n,m ), σ n,m is the conductivity of the signal with the nth preset wavelength when it is transmitted in the mth first-class water area, ε n,m is the dielectric constant of the signal with the nth preset wavelength when it is transmitted in the mth first-class water area, c n,m is the salt concentration of the mth first-class water area when the signal of the nth preset wavelength is transmitted in the mth first-class water area, T n,m It is the temperature of the mth first-class water area when the signal of the nth preset wavelength is transmitted in the mth first-class water area; the value range of n is 1 to N, N is the number of preset wavelengths; the value range of m is 1 to M, M is the number of first-class water areas; the turbidity of any first-class water area is less than or equal to the preset turbidity threshold.

[0019] In this embodiment, the signal refers to a low-frequency electromagnetic signal, that is, an electromagnetic signal below 300 kHz.

[0020] In this embodiment, M≥2, and different first-category water areas correspond to different salt concentrations and / or temperatures.

[0021] In this embodiment, the preset turbidity threshold is an empirical value; when the turbidity of a water area is less than or equal to the preset turbidity threshold, it is determined that there are fewer suspended particles in the water area, and the impact of the suspended particles in the water area on the electromagnetic signals transmitted in the water area is small and can be ignored.

[0022] Those skilled in the art know that any method for obtaining conductivity, dielectric constant, salt concentration and temperature in the prior art falls within the protection scope of the present invention.

[0023] S200, traverse A, according to A n A first relationship and a second relationship corresponding to a signal of an n-th preset wavelength are obtained; the first relationship is a relationship between the salt concentration and temperature of the first type of water area and the conductivity, and the second relationship is a relationship between the salt concentration and temperature of the first water area and the dielectric constant.

[0024] In this embodiment, when obtaining the first relationship corresponding to the signal of the nth preset wavelength, the salt concentration and temperature are used as two independent variables, and the conductivity is used as the dependent variable, then a n,m c n,m 、T n,m and σ n,m Together they constitute the mth data; according to A n By fitting the M data included, the function expression of salt concentration, temperature and conductivity corresponding to the signal of the nth preset wavelength can be obtained, in which conductivity is the dependent variable, salt concentration is the first independent variable, and temperature is the second independent variable.

[0025] In this embodiment, when obtaining the second relationship corresponding to the signal of the nth preset wavelength, the salt concentration and the temperature are used as two independent variables, and the dielectric constant is used as the dependent variable, then a n,m c n,m 、T n,m and ε n,m Together they constitute the mth data; according to A n By fitting the M data included, the function expression of the salt concentration, temperature and dielectric constant corresponding to the signal of the nth preset wavelength can be obtained, in which the dielectric constant is the dependent variable, the salt concentration is the first independent variable, and the temperature is the second independent variable.

[0026] Those skilled in the art are aware that any method in the prior art for fitting multiple data to obtain a corresponding function expression falls within the protection scope of the present invention.

[0027] S300, obtaining an intermediate information set B when the signal is transmitted under the target water area, B={B1, ​​B2, …, B n ,…,B N}, B nis the intermediate information sequence of the signal with the nth preset wavelength when it is transmitted under the target waters, B n =(p n,1 ,p n,2 ,d n,1 ,b n,1 ,b n,2 ), p n,1 is the initial power of the signal of the nth preset wavelength at the first preset position in the target waters, p n,2 is the residual power of the signal of the nth preset wavelength at the second preset position in the target waters, d n,1 is the distance between the first preset position and the second preset position, b n,1 is the salt concentration of the target water area when the signal of the nth preset wavelength is transmitted in the target water area, b n,2 It is the temperature of the target water area when the signal of the nth preset wavelength is transmitted in the target water area.

[0028] In this embodiment, the signal of the nth preset wavelength transmitted in the target water area and the signal of the nth preset wavelength transmitted in the first type of water area have the same wavelengths and the same other signal parameters.

[0029] As a specific implementation, the turbidity of the target water area is greater than a preset turbidity threshold; when the electromagnetic signal is transmitted in the target water area, it is also affected by suspended particles.

[0030] Those skilled in the art know that any method for obtaining the power of an electromagnetic signal in the prior art falls within the protection scope of the present invention.

[0031] S400, traverse B, according to B n The first relationship and the second relationship corresponding to the signal of the nth preset wavelength obtain the attenuation coefficient α of the signal of the nth preset wavelength affected by suspended particles in the water when it is transmitted in the target water area n,1 .

[0032] As a preferred specific implementation, S400 includes:

[0033] S410, according to B n b n,1 , b n,2 The first relationship corresponding to the signal of the nth preset wavelength is obtained when the salt concentration is b n,1 And the temperature is b n,2 The conductivity lσ during transmission in the first type of water n .

[0034] In this embodiment, the first relationship corresponding to the signal of the nth preset wavelength is the relationship between the salt concentration and the temperature and the conductivity corresponding to the signal of the nth preset wavelength. n,1 And the temperature is b n,2 In the case of b, the signal of the nth preset wavelength can be obtained based on the first relationship corresponding to the signal of the nth preset wavelength when the salt concentration is b. n,1 And the temperature is b n,2 The conductivity lσ during transmission in the first type of water n .

[0035] S420, according to B n b n,1 , b n,2 The second relationship corresponding to the signal of the nth preset wavelength is obtained when the salt concentration is b n,1 And the temperature is b n,2 The dielectric constant lε of the first type of water when transmitting n .

[0036] In this embodiment, the second relationship corresponding to the signal of the nth preset wavelength is the relationship between the salt concentration and the temperature and the dielectric constant corresponding to the signal of the nth preset wavelength. n,1 And the temperature is b n,2 In the case of b, the signal of the nth preset wavelength can be obtained based on the second relationship corresponding to the signal of the nth preset wavelength when the salt concentration is b. n,1 And the temperature is b n,2 The dielectric constant lε of the first type of water when transmitting n .

[0037] S430, according to lσ n and lε n Get the signal of the nth preset wavelength at a salt concentration of b n,1 And the temperature is b n,2 The attenuation coefficient α when transmitting in the first type of water n,0 .

[0038] As a specific implementation, α n,0 The following conditions are met:

[0039] Among them, ω n is the angular frequency of the signal of the nth preset wavelength, and μ is the magnetic permeability of water.

[0040] Those skilled in the art know that any method for obtaining the angular frequency of a signal in the prior art falls within the protection scope of the present invention. The magnetic permeability of water is equal to the magnetic permeability of a vacuum.

[0041] Therefore, this embodiment can obtain the signal of the nth preset wavelength when the salt concentration is b n,1 And the temperature is b n,2 The attenuation coefficient α when transmitting in the first type of water n,0 .

[0042] S440, according to B n p n,1 、p n,2 and d n,1 Get the total attenuation coefficient α of the signal with the nth preset wavelength in the target water area n,2 .

[0043] As a specific implementation, α n,2 The following conditions are met:

[0044] Thus, this embodiment can obtain the total attenuation coefficient α of the signal of the nth preset wavelength in the target water area. n,2 .

[0045] S450, according to α n,0 and α n,2 Get alpha n,1 ; α n,1 =α n,2 -α n,0 .

[0046] In this embodiment, the turbidity of the target water area when the target signal is transmitted in the target water area is basically consistent with the turbidity of the target water area when the signals of N preset wavelengths are transmitted in the target water area, and the attenuation coefficient of the target signal affected by suspended particles when it is transmitted in the target water area is equal to the attenuation coefficient of the signal with a wavelength equal to the wavelength of the target signal among the N preset wavelengths when it is transmitted in the target water area.

[0047] Based on S410-S450, this embodiment can obtain a relatively accurate α n,1 .

[0048] S500, predicting the residual power p3 when the target signal is transmitted from the first target position to the second target position in the target water area based on α1; α1 is the attenuation coefficient of the signal matching the target signal when it is affected by suspended particles in the water when it is transmitted in the target water area, and the signal matching the target signal is a signal with a wavelength equal to the wavelength of the target signal among the signals of N preset wavelengths.

[0049] As a preferred specific implementation, S500 includes:

[0050] S510, obtaining the power p0 of the target signal at the first target position in the target water area.

[0051] S520, obtaining the salt concentration c0 and temperature T0 of the target water area when the target signal is transmitted in the target water area.

[0052] S530, obtaining the conductivity σ' of the target signal when it is transmitted in the first type of water area with a salt concentration of c0 and a temperature of T0 according to c0, T0 and a first relationship corresponding to the signal matching the target signal.

[0053] In this embodiment, the first relationship corresponding to the signal matching the target signal is the relationship between the salt concentration and temperature and conductivity corresponding to the signal matching the target signal. When the salt concentration is known to be c0 and the temperature is T0, the conductivity of the signal matching the target signal when it is transmitted in the first type of water area with a salt concentration of c0 and a temperature of T0 can be obtained based on the first relationship corresponding to the signal matching the target signal, that is, the conductivity σ' of the target signal when it is transmitted in the first type of water area with a salt concentration of c0 and a temperature of T0.

[0054] S540, obtaining the dielectric constant ε' of the target signal when it is transmitted in the first type of water area with a salt concentration of c0 and a temperature of T0 according to c0, T0 and a second relationship corresponding to the signal matching the target signal.

[0055] In this embodiment, the second relationship corresponding to the signal matching the target signal is the relationship between the salt concentration and temperature corresponding to the signal matching the target signal and the dielectric constant. When the salt concentration is known to be c0 and the temperature is T0, the dielectric constant of the signal matching the target signal when transmitted in the first type of water area with a salt concentration of c0 and a temperature of T0 can be obtained based on the second relationship corresponding to the signal matching the target signal, that is, the dielectric constant ε' of the target signal when transmitted in the first type of water area with a salt concentration of c0 and a temperature of T0.

[0056] S550, obtaining the attenuation coefficient α' of the target signal when it is transmitted in the first type of water area with a salt concentration of c0 and a temperature of T0 according to σ' and ε'.

[0057] As a specific implementation, α' satisfies the following conditions:

[0058] Among them, ω ′ is the angular frequency of the target signal.

[0059] S560, obtaining a total attenuation coefficient α'0 of the target signal when it is transmitted in the target water area according to α' and α1; α'0=α'+α1.

[0060] S570, obtaining p3 according to α'0, p0 and d0; d0 is the distance between the first target position and the second target position in the target water area.

[0061] As a specific implementation, p3 satisfies the following conditions:

[0062] Thus, in this embodiment, p3 can be obtained.

[0063] S600, if p3 < p1, it is determined that the target signal will fail to be transmitted in the target water area; p1 is a preset power threshold.

[0064] In this embodiment, if p3 ≥ p1, it is determined that the target signal will be successfully transmitted in the target water area. Optionally, the preset power threshold is an empirical value.

[0065] This embodiment determines the losses of electromagnetic signals with different wavelengths during underwater transmission based on the changes in salt concentration, temperature, and suspended particles. First, the conductivity and permittivity of signals with different wavelengths during transmission in different waters with low turbidity (i.e., the first type of water area) are obtained; the temperatures and salt concentrations of different first-type water areas are different. Based on the conductivity and permittivity of signals with the same wavelength in the first-type water areas with different temperatures and salt concentrations, this embodiment obtains the relationships between the temperature and salt concentration and conductivity, and the temperature and salt concentration and permittivity of signals with different wavelengths during transmission in the first-type water areas. On this basis, this embodiment also obtains the initial power, remaining power, and transmission distance of signals with different wavelengths during transmission in the target water area. Based on the initial power, remaining power, transmission distance, salt concentration, and temperature of the target water area of signals with different wavelengths, the attenuation coefficient affected by suspended particles in the target water area during the transmission of signals with different wavelengths can be obtained. On this basis, the attenuation coefficient affected by suspended particles in the target water area during the transmission of a signal with the same wavelength as the target signal is obtained, and this attenuation coefficient is determined as the attenuation coefficient affected by suspended particles in the target water area during the transmission of the target signal. Based on the attenuation coefficient affected by suspended particles in the target water area during the transmission of the target signal, the remaining power of the target signal when it is transmitted to the second target position during transmission in the target water area can be predicted, and by comparing the remaining power with the preset power threshold, it can be determined whether the target signal can be successfully transmitted. Thus, this embodiment realizes the pre-judgment of whether the target signal can be successfully transmitted before the target signal is transmitted.

[0066] Embodiment 2:

[0067] This embodiment provides an electronic device, including a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the computer program, the following steps are implemented:

[0068] Obtain the initial information set A of the signal during underwater transmission, A = {A1, A2, …, A n , …, AN}, A n is the initial information set of the signal with the nth preset wavelength when it is transmitted underwater, A n ={a n,1 ,a n,2 ,…,a n,m ,…,a n,M}, a n,m is the initial information sequence when the signal of the nth preset wavelength is transmitted in the mth first-class water area, a n,m =(σ n,m ,ε n,m ,c n,m ,T n,m ), σ n,m is the conductivity of the signal with the nth preset wavelength when it is transmitted in the mth first-class water area, ε n,m is the dielectric constant of the signal with the nth preset wavelength when it is transmitted in the mth first-class water area, c n,m is the salt concentration of the mth first-class water area when the signal of the nth preset wavelength is transmitted in the mth first-class water area, T n,m It is the temperature of the mth first-class water area when the signal of the nth preset wavelength is transmitted in the mth first-class water area; the value range of n is 1 to N, N is the number of preset wavelengths; the value range of m is 1 to M, M is the number of first-class water areas; the turbidity of any first-class water area is less than or equal to the preset turbidity threshold.

[0069] Traverse A, according to A n A first relationship and a second relationship corresponding to a signal of an n-th preset wavelength are obtained; the first relationship is a relationship between the salt concentration and temperature of the first type of water area and the conductivity, and the second relationship is a relationship between the salt concentration and temperature of the first water area and the dielectric constant.

[0070] Obtain the intermediate information set B when the signal is transmitted under the target waters, B={B1,B2,…,B n ,…,B N}, B n is the intermediate information sequence of the signal with the nth preset wavelength when it is transmitted under the target waters, B n =(p n,1 ,p n,2 ,d n,1 ,b n,1 ,b n,2 ), p n,1 is the initial power of the signal of the nth preset wavelength at the first preset position in the target waters, p n,2 is the residual power of the signal of the nth preset wavelength at the second preset position in the target waters, d n,1 is the distance between the first preset position and the second preset position, b n,1is the salt concentration of the target water area when the signal of the nth preset wavelength is transmitted in the target water area, b n,2 is the temperature of the target water area when the signal of the nth preset wavelength is transmitted in the target water area.

[0071] Traverse B, according to B n and the first relationship and the second relationship corresponding to the signal of the nth preset wavelength, obtain the attenuation coefficient α of the signal of the nth preset wavelength affected by suspended particles in the water during transmission in the target water area n,1 .

[0072] Predict the remaining power p3 when the target signal is transmitted from the first target position to the second target position in the target water area according to α1; α1 is the attenuation coefficient of the signal matching the target signal affected by suspended particles in the water during transmission in the target water area, and the signal matching the target signal is the signal with the same wavelength as the target signal among the N preset wavelength signals.

[0073] If p3 < p1, it is determined that the target signal will fail to be transmitted in the target water area; p1 is a preset power threshold.

[0074] Embodiment 3:

[0075] This embodiment provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the following steps are implemented:

[0076] Obtain the initial information set A when the signal is transmitted underwater, A = {A1, A2,..., A n ,..., A N}, A n is the initial information set when the signal of the nth preset wavelength is transmitted underwater, A n = {a n,1 , a n,2 ,..., a n,m ,..., a n,M}, a n,m is the initial information sequence when the signal of the nth preset wavelength is transmitted in the mth first-class water area, a n,m = (σ n,m , ε n,m , c n,m , T n,m ), σ n,m is the conductivity when the signal of the nth preset wavelength is transmitted in the mth first-class water area, ε n,m is the dielectric constant when the signal of the nth preset wavelength is transmitted in the mth first-class water area, c n,m is the salt concentration of the mth first-class water area when the signal of the nth preset wavelength is transmitted in the mth first-class water area, T n,mis the temperature of the m-th first-class water area when the signal of the n-th preset wavelength is transmitted in the m-th first-class water area; the value range of n is from 1 to N, where N is the number of preset wavelengths; the value range of m is from 1 to M, where M is the number of first-class water areas; the turbidity of any first-class water area is less than or equal to the preset turbidity threshold.

[0077] Traverse A, according to A n Obtain the first relationship and the second relationship corresponding to the signal of the n-th preset wavelength; the first relationship is the relationship between the salinity concentration and temperature of the first-class water area and the conductivity, and the second relationship is the relationship between the salinity concentration and temperature of the first water area and the dielectric constant.

[0078] Obtain the intermediate information set B when the signal is transmitted under the target water area, B = {B1, B2, …, B n , …, B N}, B n is the intermediate information sequence when the signal of the n-th preset wavelength is transmitted under the target water area, B n =(p n,1 , p n,2 , d n,1 , b n,1 , b n,2 ), p n,1 is the initial power when the signal of the n-th preset wavelength is at the first preset position in the target water area, p n,2 is the remaining power when the signal of the n-th preset wavelength is at the second preset position in the target water area, d n,1 is the distance between the first preset position and the second preset position, b n,1 is the salinity concentration of the target water area when the signal of the n-th preset wavelength is transmitted in the target water area, b n,2 is the temperature of the target water area when the signal of the n-th preset wavelength is transmitted in the target water area.

[0079] Traverse B, according to B n and the first relationship and the second relationship corresponding to the signal of the n-th preset wavelength, obtain the attenuation coefficient α n,1 affected by suspended particles in the water when the signal of the n-th preset wavelength is transmitted in the target water area.

[0080] Predict the remaining power p3 when the target signal is transmitted from the first target position to the second target position in the target water area according to α1; α1 is the attenuation coefficient affected by suspended particles in the water when the signal matching the target signal is transmitted in the target water area, and the signal matching the target signal is the signal with the same wavelength as the target signal among the N preset wavelength signals.

[0081] If p3 < p1, it is determined that the target signal will fail to be transmitted in the target water area; p1 is the preset power threshold.

[0082] Although some specific embodiments of the present invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It will also be appreciated by those skilled in the art that various modifications may be made to the embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A signal transmission method in an underwater environment, characterized in that: The method includes the following steps: S100, obtaining an initial information set A of the signal during underwater transmission, A={A1, A2, …, A n ,…,A N }, A n is the initial information set of the signal with the nth preset wavelength when it is transmitted underwater, A n ={a n,1 ,a n,2 ,…,a n,m ,…,a n,M }, a n,m is the initial information sequence when the signal of the nth preset wavelength is transmitted in the mth first-class water area, a n,m =(σ n,m ,ε n,m ,c n,m ,T n,m ), σ n,m is the conductivity of the signal with the nth preset wavelength when it is transmitted in the mth first-class water area, ε n,m is the dielectric constant of the signal with the nth preset wavelength when it is transmitted in the mth first-class water area, c n,m is the salt concentration of the mth first-class water area when the signal of the nth preset wavelength is transmitted in the mth first-class water area, T n,m is the temperature of the mth first-class water area when the signal of the nth preset wavelength is transmitted in the mth first-class water area; the value range of n is 1 to N, N is the number of preset wavelengths; the value range of m is 1 to M, M is the number of first-class water areas; the turbidity of any first-class water area is less than or equal to the preset turbidity threshold; S200, traverse A, according to A n Obtaining a first relationship and a second relationship corresponding to a signal of an n-th preset wavelength; wherein the first relationship is a relationship between the salt concentration and temperature of the first type of water area and the conductivity, and the second relationship is a relationship between the salt concentration and temperature of the first water area and the dielectric constant; S300, obtaining an intermediate information set B when the signal is transmitted under the target water area, B={B1, ​​B2, …, B n ,…,B N }, B n is the intermediate information sequence of the signal with the nth preset wavelength when it is transmitted under the target waters, B n =(p n,1 ,p n,2 ,d n,1 ,b n,1 ,b n,2 ), p n,1 is the initial power of the signal of the nth preset wavelength at the first preset position in the target waters, p n,2 is the residual power of the signal of the nth preset wavelength at the second preset position in the target waters, d n,1 is the distance between the first preset position and the second preset position, b n,1 is the salt concentration of the target water area when the signal of the nth preset wavelength is transmitted in the target water area, b n,2 The temperature of the target water area when the signal of the nth preset wavelength is transmitted in the target water area; S400, traverse B, according to B n The first relationship and the second relationship corresponding to the signal of the nth preset wavelength obtain the attenuation coefficient α of the signal of the nth preset wavelength affected by suspended particles in the water when it is transmitted in the target water area n,1 ; S500. Predict the remaining power p3 when the target signal is transmitted from the first target position in the target water area to the second target position according to α1. α1 is the attenuation coefficient affected by suspended particles in the water during the transmission of the signal matching the target signal, and the signal matching the target signal is the signal with the same wavelength as the target signal among the N preset wavelength signals; S600. If p3 < p1, it is determined that the transmission of the target signal in the target water area will fail. p1 is a preset power threshold.

2. The signal transmission method in an underwater environment according to claim 1, characterized in that: S400 includes: S410, according to B n b n,1 、b n,2 The first relationship corresponding to the signal of the nth preset wavelength is obtained when the salt concentration is b n,1 And the temperature is b n,2 The conductivity lσ during transmission in the first type of water n ; S420, according to B n b n,1 、b n,2 The second relationship corresponding to the signal of the nth preset wavelength is obtained when the salt concentration is b n,1 And the temperature is b n,2 The dielectric constant lε of the first type of water when transmitting n ; S430, according to lσ n and lε n Get the signal of the nth preset wavelength at a salt concentration of b n,1 And the temperature is b n,2 The attenuation coefficient α when transmitting in the first type of water n,0 ; S440, according to B n p n,1 、p n,2 and d n,1 Get the total attenuation coefficient α of the signal with the nth preset wavelength in the target water area n,2 ; S450, according to α n,0 and α n,2 Obtain α n,1 ; α n,1 = α n,2 -α n,0 .

3. The signal transmission method in an underwater environment according to claim 1, characterized in that: S500 includes: S510. Obtain the power p0 of the target signal at the first target position in the target water area; S520. Obtain the salt concentration c0 and temperature T0 of the target water area during the transmission of the target signal; S530. Obtain the conductivity σ’ of the target signal when it is transmitted in the first type of water area with a salt concentration of c0 and a temperature of T0 according to the first relationship corresponding to the signal matching the target signal; S540. Obtain the permittivity ε’ of the target signal when it is transmitted in the first type of water area with a salt concentration of c0 and a temperature of T0 according to the second relationship corresponding to the signal matching the target signal; S550. Obtain the attenuation coefficient α’ of the target signal when it is transmitted in the first type of water area with a salt concentration of c0 and a temperature of T0 according to σ’ and ε’; S560. Obtain the total attenuation coefficient α’0 of the target signal when it is transmitted in the target water area according to α’ and α1. α’0 = α’ + α1; S570. Obtain p3 according to α’0, p0, and d0. d0 is the distance between the first target position and the second target position in the target water area.

4. The signal transmission method in an underwater environment according to claim 3, characterized in that: p3 satisfies the following conditions:

5. The signal transmission method in an underwater environment according to claim 2, characterized in that: α n,0 The following conditions are met: Among them, ω n is the angular frequency of the signal of the nth preset wavelength, and μ is the magnetic permeability of water.

6. The signal transmission method in an underwater environment according to claim 2, characterized in that: α n,2 The following conditions are met:

7. The signal transmission method in an underwater environment according to claim 1, characterized in that: S600 further includes: If p3 ≥ p1, it is determined that the transmission of the target signal in the target water area will succeed.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, it implements the signal transmission method in the underwater environment as described in any one of claims 1 to 7.

9. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by the processor, it implements the signal transmission method in the underwater environment as described in any one of claims 1 to 7.

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