Atmospheric waveguide data compression and analytical transmission method and device

Abstract

This invention proposes a method and apparatus for compressed and analytical transmission of atmospheric waveguide data, relating to the field of atmospheric waveguide data transmission technology. The transmission apparatus includes a support assembly, an antenna unit, a feed assembly, and a containment mechanism. An antenna unit is mounted on the top of the support assembly, and a containment ring is provided on the outer side of the antenna unit. A gap is provided between the inner side of the containment ring and the edge of the antenna unit. The containment mechanism is installed inside the gap and extends to cover the antenna unit. Through a specific compression design, this invention reduces the data transmission volume while ensuring data validity and recoverability, ensuring efficient data transmission in scenarios such as satellite networks. The limited bandwidth of satellite communication networks enables rapid transmission of large-scale, high-capacity atmospheric waveguide forecast data, meeting the atmospheric waveguide data transmission support needs of shore-based management centers for ocean-going vessels.

Description

Technical Field

[0001] This invention relates to the field of atmospheric waveguide data transmission technology, and in particular to a method and apparatus for atmospheric waveguide data compression, analysis, and transmission. Background Technology

[0002] Atmospheric waveguides at sea are an anomalous propagation phenomenon in the atmosphere. Due to their ability to significantly impact the coverage and operational effectiveness of radio systems, they possess significant application value. In recent years, with the improvement of numerical weather prediction techniques, meteorological scientific data has shown a clear upward trend in both type and quantity. Meanwhile, the satellite communication bandwidth relied upon for communication between ocean-going vessels and shore-based management centers is limited. Therefore, how to efficiently transmit atmospheric waveguide forecast data calculated based on meteorological scientific data to shipboard platforms to guide the use of shipborne radio systems is a pressing problem that needs to be solved.

[0003] In existing technologies, the amount of complete atmospheric waveguide data is enormous. Under the condition that the satellite communication bandwidth on which ocean-going ships rely is severely limited, direct transmission will cause problems such as low transmission efficiency and insufficient real-time performance, resulting in data not being able to reach the ship platform in a timely manner. This affects the timeliness of the shipborne radio system in optimizing communication parameters based on forecasts. On the other hand, the transmission of atmospheric waveguide data requires the use of multiple devices in combination. Among them, the ship receives the downlink atmospheric waveguide data from the satellite using a marine VSAT antenna. However, conventional antenna equipment is exposed to the air for a long time and is easily affected by dust adhesion or damage, which will reduce the stability and reliability of the acquired data. Summary of the Invention

[0004] The present invention aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, the purpose of this invention is to provide an atmospheric waveguide data compression and analysis transmission method and apparatus. Through specific compression design, this invention reduces the amount of data transmission while ensuring data validity and recoverability, ensuring efficient data transmission in scenarios such as satellite networks. The limited bandwidth of satellite communication networks can quickly transmit large-scale, high-capacity atmospheric waveguide forecast data, meeting the atmospheric waveguide data transmission guarantee requirements of shore-based management centers for ocean-going vessels. Furthermore, the shipborne antenna unit extends the efficient and accurate service life, and the feed body of the transmission antenna can be flexibly controlled through a single power device.

[0006] To achieve the above objectives, the present invention provides an atmospheric waveguide data compression and analysis transmission device, comprising: a support assembly, an antenna unit, a feed assembly, and a enclosure mechanism;

[0007] An antenna unit is mounted on the top of the support assembly. A retaining ring is provided on the outside of the antenna unit. A gap is provided between the inner side of the retaining ring and the edge of the antenna unit. The retaining mechanism is installed on the inside of the gap. The retaining mechanism covers the top of the antenna unit after it is extended.

[0008] A fixing frame is welded to the top of the enclosure ring, a feed assembly is installed at the top of the fixing frame, a feed body is installed at the bottom of the feed assembly, a motor is screwed to the top of the feed assembly, a housing is provided on the outside of the feed assembly, and the top of the feed body is inserted into the inside of the housing.

[0009] Furthermore, the support assembly includes a base plate, a retaining ring, and columns. The columns are mounted on the surface of the base plate, and the top of the columns is fixed below the antenna unit. A support frame is also welded to the surface of the base plate. The support frame has a right-angle bent structure. The diameter of the antenna unit is 1.8 meters.

[0010] The top of the support frame is welded to the side of the enclosure ring, and the support frame is installed symmetrically on both sides of the column. The top of the enclosure ring is flush with the top of the antenna unit. The support frame is used to provide support for the enclosure ring.

[0011] Furthermore, the number of mounting brackets is three, and the mounting brackets are evenly distributed on the side of the feed assembly. The antenna unit is used to receive compressed image data from satellite downlink.

[0012] Furthermore, the feed assembly includes a top plate, a housing, and a feed body;

[0013] The top of the outer shell is integrally formed with a top plate, the top of the fixing frame is welded to the surface of the outer shell, a motor is screwed to the middle of the top of the top plate, a drive shaft is inserted into the output end of the motor, a rotating disk is installed at the end of the drive shaft, and an arc-shaped convex plate is integrally formed at the bottom of the rotating disk.

[0014] A ratchet is mounted on the surface of the drive shaft, and a sandwich layer is provided on the surface of the housing. A clamping rod is provided on the inner side of the sandwich layer, and two clamping rods form a group, with a gap between the clamping rods in the same group.

[0015] Furthermore, the feed assembly also includes:

[0016] The feed body includes an extension plate, a second spring rod, and a top rod. The extension plate is integrally formed with the bottom side of the feed body. The top of the extension plate is welded with a second spring rod, and the top of the second spring rod is inserted upward into the interior of the housing. The top of the feed body is fitted with a top rod, and a steel ball is installed at the top of the top rod. There are two top rods and two steel balls.

[0017] The top rod rests against the bottom of the arc-shaped convex plate via a steel ball at the top. The arc-shaped convex plate, through the rotational movement of the drive shaft, works in conjunction with the steel ball at the bottom and the top rod to periodically drive the feed body to move up and down. The central axis of the feed body coincides with the central axis of the antenna unit.

[0018] Furthermore, the enclosure mechanism includes a lifting ring, an elastic belt, and a traction rope;

[0019] The top of the lifting ring is fitted with a shielding film, the top of the shielding film is fitted with an elastic band, the top of the elastic band is connected to a traction rope, and the top of the traction rope is connected to a rotating sleeve.

[0020] The rotating sleeve is used to fit around the drive shaft and the ratchet, the shielding film is used to be embedded inside the gap, and a first spring rod is welded to the bottom of the lifting ring, with the bottom end of the first spring rod inserted into the inside of the base plate.

[0021] Furthermore, a pawl is installed on the inner side of the rotating sleeve. The pawl abuts against the side of the ratchet for braking. The drive shaft is used to control the rotation of the ratchet and the rotating disk at the bottom. The ratchet, in conjunction with the pawl, drives the rotating sleeve to rotate. The rotating sleeve is used to wind the traction rope around the surface.

[0022] A transmission method using the above-described transmission device includes the following steps:

[0023] S1. Atmospheric waveguide data only extracts and transmits key characteristic parameters of evaporation waveguides, surface waveguides and suspended waveguides, discarding complete corrected refractive index profile data;

[0024] S2. Utilizing the slow-changing nature of the atmosphere, only the difference between the characteristic parameters at the current time and the previous sampling time is transmitted, rather than the absolute value.

[0025] S3. Encode the feature parameters and changes into RGB values ​​of n image pixels according to the protocol rules, apply a novel lossless compression algorithm to the encoded images, and send them to the ship via satellite network;

[0026] S4. Collect and receive compressed image data from satellite downlink via antenna transmission device;

[0027] S5. Decompressed images from the ship's end, feature data extracted based on pixel rules;

[0028] S6. For different waveguide types, call the fitting formula or linear model to restore the characteristic parameters to the corrected refractive index profile.

[0029] Furthermore, the transmitted atmospheric waveguide data includes the characteristic parameters of the atmospheric waveguide, but does not transmit the corrected refractive index profile. After receiving the atmospheric waveguide characteristic parameters, the receiving end restores the characteristic parameters to the corrected refractive index profile according to the model during decoding.

[0030] Furthermore, the transmitted atmospheric waveguide data also includes the change in atmospheric waveguide characteristic quantities between specified time resolutions, and the atmospheric waveguide characteristic parameters are represented by pixels in the image. The atmospheric waveguide characteristic parameters are encoded using the RGB values ​​of each pixel. Each pixel of the image is composed of three colors, RGB, with each color occupying 1 byte. The RGB values ​​of each pixel are used to define the characteristic parameters of evaporation waveguides, surface waveguides, and suspended waveguides at a certain resolution space.

[0031] The technical solution provided by this invention may include the following beneficial effects:

[0032] 1. This atmospheric waveguide data compression and analytical transmission method reduces the amount of data transmitted while ensuring data validity and recoverability through specific compression design. This ensures that data can be transmitted efficiently in scenarios such as satellite networks. Only key characteristic parameters of evaporative waveguides, surface waveguides, and suspended waveguides, such as height, intensity, and thickness, are transmitted, while the modified refractive index profile is discarded, thus reducing the amount of data transmitted from the source.

[0033] 2. This atmospheric waveguide data compression and analytical transmission method uses specific models at the receiving end to restore the characteristic parameters into a corrected refractive index profile based on different waveguide types. For evaporation waveguides, a fitting formula is used; for surface waveguides and suspended waveguides, a linear model is employed. Furthermore, the corrected refractive index slopes inside and outside the waveguide trapping layer are appropriately set to ensure the accuracy of data recovery.

[0034] 3. This atmospheric waveguide data compression and analytical transmission method utilizes the slow-changing characteristics of the atmospheric environment under short-timescale conditions, transmitting only the changes relative to the previous sampling time. Because the changes are small, the data volume is further compressed. A novel lossless compression algorithm is used to encode the data into RGB values ​​of image pixels for transmission, achieving efficient compression.

[0035] 4. The support components used in this atmospheric waveguide data compression and analysis transmission device, together with the enclosure mechanism, can provide enclosure protection for the shipborne antenna unit when it is not in use for a long time, thereby improving the protection effect and extending the efficient and accurate service life. At the same time, it can also achieve flexible control of the feed body through a single power device.

[0036] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0037] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0038] Figure 1 This is a flowchart of an atmospheric waveguide data compression and analytical transmission method proposed in an embodiment of the present invention;

[0039] Figure 2 This is an external view of an atmospheric waveguide data compression and analysis transmission device according to an embodiment of the present invention;

[0040] Figure 3 This is a schematic diagram of the structure of a support component proposed in an embodiment of the present invention;

[0041] Figure 4 This is a schematic diagram of a fencing mechanism proposed in an embodiment of the present invention;

[0042] Figure 5 This is a schematic diagram of the structure of a feed component proposed in an embodiment of the present invention;

[0043] Figure 6 This is a diagram of the internal structure of a feed component according to an embodiment of the present invention;

[0044] Figure 7 This is a cross-sectional view of the interior of the outer shell according to an embodiment of the present invention;

[0045] Figure 8 This is a schematic diagram of the structure of the feed body proposed in an embodiment of the present invention;

[0046] Figure 9 This is a schematic diagram of the pixel colors of an image file according to an embodiment of the present invention;

[0047] As shown in the figure: 1. Support assembly; 2. Antenna unit; 3. Feed assembly; 4. Enclosure mechanism; 5. Base plate; 6. Support frame; 7. Enclosure ring; 8. Gap; 9. Column; 10. Shielding membrane; 11. Lifting ring; 12. First spring rod; 13. Elastic band; 14. Traction rope; 15. Rotating sleeve; 16. Fixing frame; 17. Top plate; 18. Outer shell; 19. Interlayer; 20. Clamping rod; 21. Feed body; 22. Motor; 23. Drive shaft; 24. Ratchet; 25. Rotating disk; 26. Arc-shaped convex plate; 27. Pawl; 28. Extension plate; 29. ​​Second spring rod; 30. Top rod; 31. Steel ball. Detailed Implementation

[0048] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the invention, and should not be construed as limiting the invention. Rather, embodiments of the invention include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0049] like Figures 1 to 9 As shown, the present invention proposes an atmospheric waveguide data compression and analysis transmission device, comprising: a support component 1, an antenna unit 2, a feed component 3, and a enclosure mechanism 4;

[0050] An antenna unit 2 is mounted on the top of the support component 1. A retaining ring 7 is provided on the outer side of the antenna unit 2. A gap 8 is provided between the inner side of the retaining ring 7 and the edge of the antenna unit 2. The retaining mechanism 4 is installed on the inner side of the gap 8. The retaining mechanism 4 covers the antenna unit 2 after it is extended.

[0051] The top of the enclosure ring 7 is welded with a fixing frame 16, the top of the fixing frame 16 is equipped with a feed assembly 3, the bottom of the feed assembly 3 is equipped with a feed body 21, the top of the feed assembly 3 is screwed with a motor 22, the outside of the feed assembly 3 is provided with a shell 18, and the top of the feed body 21 is inserted into the inside of the shell 18.

[0052] When in use, the invention receives atmospheric waveguide data through the shipborne antenna equipment. When the entire device is not in use, the bottom enclosure mechanism 4 can be extended by rotating the top motor 22, and the enclosure assembly is finally unfolded upward to cover the upper antenna unit 2. At the same time, the feed body 21 can be controlled to perform short-distance lifting and lowering adjustment.

[0053] In this embodiment, the support assembly 1 includes a base plate 5, a retaining ring 7, and a column 9. The column 9 is installed on the surface of the base plate 5, and the top of the column 9 is fixed below the antenna unit 2. A support frame 6 is also welded to the surface of the base plate 5. The support frame 6 has a right-angle bent structure. The diameter of the antenna unit 2 is 1.8 meters.

[0054] The top of the support frame 6 is welded to the side of the enclosure ring 7, and the support frame 6 is installed symmetrically on both sides of the column 9. The top of the enclosure ring 7 is flush with the top of the antenna unit 2. The support frame 6 is used to provide support for the enclosure ring 7.

[0055] The number of mounting brackets 16 is three, and the mounting brackets 16 are evenly distributed on the side of the feed assembly 3. The antenna unit 2 is used to receive compressed image data from satellite downlink.

[0056] In this embodiment, the feed assembly 3 includes a top plate 17, a housing 18, and a feed body 21;

[0057] The top of the outer shell 18 is integrally formed with a top plate 17. The top of the fixing frame 16 is welded to the surface of the outer shell 18. A motor 22 is screwed to the middle of the top of the top plate 17. A drive shaft 23 is inserted into the output end of the motor 22. A rotating disk 25 is installed at the end of the drive shaft 23. An arc-shaped protrusion 26 is integrally formed at the bottom of the rotating disk 25.

[0058] A ratchet 24 is mounted on the surface of the drive shaft 23, and a sandwich layer 19 is provided on the surface of the housing 18. A clamping rod 20 is provided on the inner side of the sandwich layer 19, and two clamping rods 20 form a group, with a gap between the clamping rods 20 in the same group.

[0059] The feed component 3 also includes:

[0060] The feed body 21 is integrally formed with an extension plate 28, a second spring rod 29, and a top rod 30. The extension plate 28 has a bottom side integrally formed with the feed body 21. The top of the extension plate 28 is welded with a second spring rod 29. The top of the second spring rod 29 is inserted upward into the interior of the outer shell 18. The top of the feed body 21 is inserted with a top rod 30. The top of the top rod 30 is equipped with a steel ball 31. There are two top rods 30 and two steel balls 31.

[0061] The top rod 30 rests against the bottom of the arc-shaped convex plate 26 via the steel ball 31 at the top. The arc-shaped convex plate 26, through the rotational movement of the drive shaft 23, cooperates with the steel ball 31 at the bottom and the top rod 30 to periodically drive the feed body 21 to move up and down. The central axis of the feed body 21 coincides with the central axis of the antenna unit 2.

[0062] Specifically, after starting the motor 22, the motor 22 drives the drive shaft 23 at the bottom to rotate, and the drive shaft 23 drives the ratchet 24 on the surface to rotate, such as... Figure 7 As shown, when the ratchet 24 rotates counterclockwise, the entire rotating sleeve 15 will rotate synchronously due to the blocking effect of the pawl 27. Therefore, the traction rope 14 on the side will be wound up, and the traction rope 14 will be pulled back. This will cause the elastic band 13 at the end and the shielding film 10 to be pulled upward, thus achieving the process of shielding and covering the entire antenna unit 2.

[0063] During the pulling process of the traction rope 14, the traction rope 14 will pass through the inside of the clamping rod 20 to ensure that the pulling force can be applied to the elastic belt 13 more effectively through the traction rope 14, without causing the entire transmission belt to twist.

[0064] In this embodiment, the enclosure mechanism 4 includes a lifting ring 11, an elastic band 13, and a traction rope 14;

[0065] The top of the lifting ring 11 is fitted with a shielding film 10, the top of the shielding film 10 is fitted with an elastic band 13, the top of the elastic band 13 is connected to a traction rope 14, and the top of the traction rope 14 is connected to a rotating sleeve 15.

[0066] The rotating sleeve 15 is used to be sleeved on the outside of the drive shaft 23 and the ratchet 24. The shielding film 10 is used to be embedded in the gap 8. The bottom of the lifting ring 11 is welded with a first spring rod 12, and the bottom end of the first spring rod 12 is inserted into the inside of the bottom plate 5.

[0067] A pawl 27 is installed on the inner side of the rotating sleeve 15. The pawl 27 abuts against the side of the ratchet 24 for braking. The drive shaft 23 is used to control the ratchet 24 and the rotating disk 25 at the bottom to rotate. The ratchet 24, in conjunction with the pawl 27, drives the rotating sleeve 15 to rotate. The rotating sleeve 15 is used to wind the traction rope 14 around its surface.

[0068] The support component 1, together with the enclosure mechanism 4, can provide enclosure protection for the antenna unit 2 when it is not used for a long time, which improves the protection effect and extends the efficient and accurate service life. At the same time, it can also achieve flexible control of the feed body 21 through a single power device.

[0069] Specifically, when the drive shaft 23 rotates, it will pull the entire shielding film 10 upward, and at the same time, it will also move the bottom lifting ring 11 upward. At this time, the first spring rod 12 will be stretched until the shielding film 10 completely covers the top antenna unit 2, and finally the elastic band 13 will be pressed against the outside of the interlayer 19 to complete the entire coverage process.

[0070] When atmospheric waveguide data needs to be received, the reverse control motor 22 rotates, which, under the action of the first spring rod 12, pulls the lifting ring 11 and the shielding film 10 downward by winding and unwinding the traction rope 14, and finally pulls the traction rope 14 back to its original position, exposing the antenna unit 2. In this process, although there is a ratchet 24 structure on the surface of the drive shaft 23, as long as the motor 22 is controlled to rotate synchronously in the opposite direction, the ratchet 24 can be controlled to rotate synchronously and in the same direction as the rotating sleeve 15. Therefore, during the process of the shielding film 10 being reset, that is, during the process of the traction rope 14 being wound and unwinding from the surface of the rotating sleeve 15, it will not be affected by the ratchet 24 and pawl 27 structure.

[0071] After the blocking mechanism is reset, the spring force of the first spring rod 12 is no longer applied. If the motor 22 is controlled to rotate, the drive shaft 23 can continue to rotate in one direction due to the influence of the ratchet 24 and the pawl 27, without driving the rotating sleeve 15 to rotate. At this time, the rotating disk 25 at the end can still be controlled to rotate. Through this rotation effect, in conjunction with the arc-shaped convex plate 26 at the bottom, pressure is applied to the steel ball 31 and the top rod 30 below, ultimately controlling the entire feed body 21 to perform periodic lifting and lowering movements, so as to achieve the purpose of fine-tuning the position of the feed body 21 and optimizing the stability of signal reception.

[0072] The sides of the pawl 27 are connected to the inside of the rotating sleeve 15 by torsion springs to ensure that it can work with the ratchet 24 to achieve one-way braking.

[0073] This embodiment also provides a transmission method using the above-described transmission device, comprising the following steps:

[0074] S1. Atmospheric waveguide data only extracts and transmits key characteristic parameters of evaporation waveguides, surface waveguides and suspended waveguides, discarding complete corrected refractive index profile data;

[0075] S2. Utilizing the slow-changing nature of the atmosphere, only the difference between the characteristic parameters at the current time and the previous sampling time is transmitted, rather than the absolute value.

[0076] S3. Encode the feature parameters and changes into RGB values ​​of n image pixels according to the protocol rules, apply a novel lossless compression algorithm to the encoded images, and send them to the ship via satellite network;

[0077] S4. Collect and receive compressed image data from satellite downlink via antenna transmission device;

[0078] S5. Decompressed images from the ship's end, feature data extracted based on pixel rules;

[0079] S6. For different waveguide types, call the fitting formula or linear model to restore the characteristic parameters to the corrected refractive index profile.

[0080] Specifically, this method employs a targeted recovery model. The receiver uses a specific model to recover the characteristic parameters into a corrected refractive index profile based on different waveguide types. For evaporating waveguides, a fitting formula is used; for surface waveguides and suspended waveguides, a linear model is employed. Furthermore, the slopes of the corrected refractive index inside and outside the waveguide trapping layer are appropriately set to ensure the accuracy of data recovery.

[0081] This embodiment also provides pixel encoding and protocol definition to achieve structured data integration, including:

[0082] RGB pixel encoding: Atmospheric waveguide feature parameters are encoded into the RGB values ​​of image pixels, with each pixel representing a certain spatial range, thus realizing a structured representation of spatial data;

[0083] The n-image protocol system defines the waveguide characteristic parameters (such as height, intensity, and variation), time range, and resolution corresponding to different bits in each pixel through pixel protocol definition, making data transmission have clear rules and operability.

[0084] Through the above measures, the limited bandwidth of satellite communication networks can be used to quickly transmit large-scale, high-capacity atmospheric waveguide forecast data, meeting the needs of shore-based management centers for ensuring atmospheric waveguide data transmission from ocean-going vessels.

[0085] This embodiment also provides the following specific measures:

[0086] First, only characteristic parameters of various atmospheric waveguides are transmitted. The characteristic parameters for evaporation waveguides are evaporation waveguide height and intensity, with the evaporation waveguide height not exceeding 40 meters; the characteristic parameters for surface waveguides are trapping layer bottom height, trapping layer thickness, and intensity; the characteristic parameters for suspended waveguides are trapping layer bottom height, trapping layer thickness, and intensity. To reduce the amount of data transmitted, the corrected refractive index profile is not transmitted. After receiving the atmospheric waveguide characteristic parameters, the receiving end reconstructs the corrected refractive index profile based on the model during decoding.

[0087] Second, only the changes in atmospheric waveguide characteristic quantities between specified time resolutions are transmitted. The atmospheric environment is a slow variable on short time scales, and the changes within a certain time interval are relatively small. To reduce the amount of data transmitted, the forecast atmospheric waveguide data only transmits the relative changes with respect to the previous sampling time.

[0088] Third, an image compression format is used for transmission. This design represents atmospheric waveguide characteristic parameters using pixels in an image, and encodes the atmospheric waveguide characteristic parameters using the RGB values ​​of each pixel.

[0089] In this embodiment, using a 1-hour time resolution as an example, the feature parameters and their changes are encoded into 26 images according to the protocol rules. The data protocol definition within the 26 image documents is as follows: Figure 9As shown, each pixel in the image is composed of three colors: RGB, with each color occupying one byte. The RGB values ​​of each pixel are used to define the characteristic parameters of evaporative waveguides, surface waveguides, and suspended waveguides at a certain resolution. Table 1 shows the protocol of a single pixel in the 26 images:

[0090] Table 1 Single pixel encoding protocol

[0091]

[0092]

[0093]

[0094]

[0095] Image 1 uses 24 bits of RGB to represent the 24-hour change in evaporation waveguide height. Bit 0 is 0, indicating that the predicted evaporation waveguide height for the first hour has increased compared to the monitored height (at the start time), while a bit of 1 indicates a decrease. Bit 1 is 0, indicating that the predicted evaporation waveguide height for the second hour has increased compared to the previous hour, while a bit of 1 indicates a decrease, and so on. Image 2 shows the increase and decrease in evaporation waveguide intensity. Each bit in Images 3 to 8 represents the increase and decrease in the bottom height, thickness, and intensity of the trapping layer for surface waveguides and suspended waveguides over 24 hours, respectively.

[0096] In the image, pixels 0 to 4 of the 9-pixel sequence represent the absolute height of the evaporated waveguide in this small region at time 0. Pixels 5 and 6 represent the corrected refractive index value at a certain height above the evaporated waveguide height. If the corrected refractive index at the evaporated waveguide height is 0 (minimum), the range of the corrected refractive index value at that height is 0 to 3, with a resolution of 1M. Pixels 7 to 11 represent the evaporated waveguide intensity. Pixels 12 to 18 represent the bottom height of the surface waveguide trapping layer. Pixels 19 to 23 represent the thickness of the surface waveguide trapping layer. Pixels 22 and 23 are reserved. In the image, pixels 0 to 4 of the 10-pixel sequence represent the surface waveguide intensity in this small region at time 0. Pixels 5 to 13 represent the bottom height of the suspended waveguide trapping layer in this region. Pixels 14 to 18 and 19 to 23 represent the suspended waveguide intensity and trapping layer thickness, respectively, with the same resolution and maximum value as the surface waveguide.

[0097] The first 11 pixels of the image, from 0 to 1, represent the change in the evaporation waveguide height relative to time 0 during the first hour. Whether this change is an increase or a decrease is determined by... Figure 1 The 0th position determines the value. Positions 2 and 3 represent the change in the second hour relative to the first hour, with the increase or decrease determined by the first position in Figure 1. Similarly, positions 22 and 23 represent the change in the evaporation waveguide height in the 12th hour relative to the 11th hour.

[0098] The first 12 pixels of the image, from 0 to 1, represent the change in the evaporation waveguide intensity during the first hour relative to time 0. The increase or decrease is determined by... Figure 1 The first bit determines the intensity. Similarly, bits 22 and 23 represent the change in the evaporation waveguide intensity at hour 12 relative to hour 11.

[0099] Images 13 and 14 show the changes in evaporation waveguide height and intensity over 13 to 24 hours.

[0100] In the first 15 pixels of the image, bits 0 to 1 represent the change in the bottom height of the surface waveguide trapping layer relative to time 0 during the first hour. The increase or decrease is determined by bit 0 of image 3. Bits 3 to 4 represent the change in the bottom height of the surface waveguide trapping layer relative to the first hour during the second hour. The increase or decrease is determined by bit 1 of image 3, and so on. Bits 22 to 23 represent the change in the bottom height of the surface waveguide trapping layer relative to the 11th hour during the 12th hour.

[0101] Images 16 (pixels 0-1) represent the change in surface waveguide trapping layer thickness relative to time 0 during the first hour. Increases or decreases are determined by bit 0 in image 4, and so on. Images 17 (pixels 0-1) represent the change in surface waveguide intensity relative to time 0 during the first hour. Increases or decreases are determined by bit 0 in image 5, and so on. Images 18-20 define the changes in surface waveguide characteristic parameters over 13-24 hours. Images 21-26 define the 24-hour changes in suspended waveguide characteristic parameters, with the same resolution and range as the surface waveguide.

[0102] The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0103] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of the preferred embodiments of the invention includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as will be understood by those skilled in the art to which embodiments of the invention pertain.

[0104] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0105] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. Atmospheric waveguide data compression analytic transmission apparatus, characterized by, Include: Supporting assembly (1), antenna unit (2), feed source assembly (3) and fence mechanism (4); The top end of the supporting assembly (1) is built with an antenna unit (2), the outer side of the antenna unit (2) is provided with a fence ring (7), the inner side of the fence ring (7) and the edge of the antenna unit (2) are provided with a gap (8), the fence mechanism (4) is installed on the inner side of the gap (8), the fence mechanism (4) covers the top of the antenna unit (2) by stretching; The top end of the fence ring (7) is welded with a fixed frame (16), the top end of the fixed frame (16) is installed with a feed source assembly (3), the bottom of the feed source assembly (3) is installed with a feed source body (21), the top end of the feed source assembly (3) is screwed with a motor (22), the outer side of the feed source assembly (3) is provided with a shell (18), the top end of the feed source body (21) is inserted into the inside of the shell (18); The feed source assembly (3) comprises a top plate (17), a shell (18) and a feed source body (21); The top end of the shell (18) is integrally formed with a top plate (17), the top end of the fixed frame (16) is welded on the surface of the shell (18), the top end of the top plate (17) is screwed with a motor (22) at the middle position, the output end of the motor (22) is inserted with a driving shaft (23), the end of the driving shaft (23) is installed with a rotating disc (25), the bottom end of the rotating disc (25) is integrally formed with an arc-shaped convex plate (26); The surface of the driving shaft (23) is installed with a ratchet wheel (24), the surface of the shell (18) is provided with a sandwich layer (19), the inner side of the sandwich layer (19) is provided with a clamping rod (20), and two clamping rods (20) are a group, and a gap is provided between the clamping rods (20) in the same group, the fence mechanism (4) comprises a lifting ring (11), an elastic band (13) and a traction rope (14); The top end of the lifting ring (11) is attached with a shielding film (10), the top end of the shielding film (10) is attached with an elastic band (13), the top end of the elastic band (13) is connected with a traction rope (14), and the top end of the traction rope (14) is connected with a rotating sleeve (15); The rotating sleeve (15) is used for sleeving on the outer side of the driving shaft (23) and the ratchet wheel (24), the shielding film (10) is used for embedding into the inside of the gap (8), the bottom of the lifting ring (11) is welded with a first spring rod (12), and the bottom end of the first spring rod (12) is inserted into the inner side of the bottom plate (5).

2. The atmospheric waveguide data compression analytic transmission device of claim 1, wherein: The supporting assembly (1) comprises a bottom plate (5), a fence ring (7) and a stand (9), the surface of the bottom plate (5) is installed with a stand (9), the top end of the stand (9) is fixed below the antenna unit (2), the surface of the bottom plate (5) is also welded with a support frame (6), the support frame (6) is overall in a right angle bending structure, and the diameter specification of the antenna unit (2) is 1.8 meters; The top end of the support frame (6) is welded to the side of the fence ring (7), and the support frame (6) is symmetrically arranged on both sides of the stand (9), the top of the fence ring (7) is flush with the top of the antenna unit (2), and the support frame (6) is used to support the fence ring (7).

3. The atmospheric waveguide data compression analytic transmission device of claim 2, wherein: The number of the fixing frames (16) is three, and the fixing frames (16) are uniformly arranged on the side of the feed assembly (3), and the antenna unit (2) is used for receiving satellite downlink compressed picture data.

4. The atmospheric waveguide data compression analytic transmission device of claim 1, wherein: The feed assembly (3) further comprises: The extension plate (28), the second spring rod (29) and the top rod (30), the bottom side of the extension plate (28) is integrally formed with the feed body (21), the top end of the extension plate (28) is welded with the second spring rod (29), the top end of the second spring rod (29) is inserted into the inside of the shell (18), the top of the feed body (21) is inserted with the top rod (30), the top end of the top rod (30) is provided with the steel ball (31), and the number of the top rod (30) and the steel ball (31) is two. The top rod (30) is in abutment with the arc-shaped convex plate (26) through the steel ball (31) at the top, the arc-shaped convex plate (26) is matched with the steel ball (31) and the top rod (30) at the bottom through the rotating movement of the driving shaft (23), is used for periodically driving the feed body (21) to move up and down, and the central axis of the feed body (21) coincides with the central axis of the antenna unit (2).

5. The atmospheric waveguide data compression analytic transmission device of claim 1, wherein: The inside of the rotating sleeve (15) is provided with the pawl (27), the pawl (27) is in abutment with the side of the ratchet wheel (24) for braking, the driving shaft (23) is used for controlling the ratchet wheel (24) and the bottom rotating disc (25) to rotate, the ratchet wheel (24) drives the rotating sleeve (15) to rotate in cooperation with the pawl (27), and the rotating sleeve (15) is used for winding the traction rope (14) on the surface.

6. A transmission method using the transmission apparatus according to claim 1, characterized by, The method comprises the following steps: S1, the atmospheric waveguide data only extracts and transmits the key characteristic parameters of the evaporation waveguide, the surface waveguide and the suspended waveguide, and discards the complete modified refractive index profile data; S2, using the slow change characteristic of the atmosphere, only transmitting the difference value of the current time characteristic parameter and the previous sampling time, rather than the absolute value; S3, encoding the characteristic parameters and the change amount into the RGB values of n pictures according to the protocol rules, using a new lossless compression algorithm on the encoded pictures, and sending the pictures to the ship through the satellite network; S4, collecting and receiving the compressed picture data transmitted by the antenna transmission device; S5, decompressing the pictures at the ship end, and extracting the characteristic data according to the pixel bit rules; S6, for different waveguide types, calling the fitting formula or linear model to restore the characteristic parameters to the modified refractive index profile.

7. The transmission method of claim 6, wherein: The transmitted atmospheric waveguide data includes the characteristic parameters of the atmospheric waveguide, and the modified refractive index profile is not transmitted. After receiving the atmospheric waveguide characteristic parameters at the receiving end, the characteristic parameters are restored to the modified refractive index profile during decoding according to the model.

8. The transmission method of claim 7, wherein, The atmospheric waveguide data transmitted further comprises a change amount between a specified time resolution of an atmospheric waveguide characteristic parameter, and the atmospheric waveguide characteristic parameter is represented by a pixel in a picture, and the atmospheric waveguide characteristic parameter is encoded by using an RGB value of each pixel, each pixel of the picture is composed of three colors of RGB, each color occupies 1 byte, and the RGB value of each pixel is used to define the evaporation waveguide, surface waveguide and suspended waveguide characteristic parameters in a certain resolution space.

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