Operating method of airborne down-cast meteorological sonde

Abstract

The invention discloses an operation method of an airborne down-cast meteorological sonde, and relates to the technical field of meteorological detection, and the operation method guarantees the correctness and integrity of the working state of equipment through various verification processes in ground preparation and mounting flight stages. Ephemeris injection is carried out before putting, the positioning speed of the sonde in the cabin in the flight mission process can be effectively shortened, the positioning time is shortened, the operation interval time is shortened, the putting operation efficiency is improved, in addition, the mounted multiple nacelles receive meteorological detection data of the meteorological sonde at the same time, main and standby redundancy can be achieved, and the working efficiency is improved. And the problem of detection data loss caused by a receiving angle and the like is avoided. According to the method, full-process design is carried out on the airborne drop operation process of the meteorological sonde from ground preparation, mounting flight, drop process, data output to final field returning and withdrawing, all links are matched with one another, and the execution quality and efficiency of the whole sounding operation task are guaranteed.

Description

Technical Field

[0001] This application relates to the technical field of meteorological sounding, and in particular to an operation method for an airborne dropped meteorological sonde. Background Art

[0002] A meteorological sonde is an important means for high-altitude atmospheric sounding, which can measure the vertical distribution of meteorological elements such as atmospheric temperature, humidity, air pressure, wind speed, and wind direction, thus making up for the deficiencies of conventional high-altitude sounding in terms of time and space, and playing an important role in observational interaction scientific experiments, typhoon monitoring and forecasting, and special mission execution.

[0003] Some practices release meteorological sonde into the air for observation through ground stations. However, the release height of this method is limited. Therefore, the more common existing practice is to carry the meteorological sonde on a manned aircraft or an unmanned aircraft and drop it from a high altitude for observation. This method has higher mobility. However, the process of airborne dropping of the meteorological sonde is interfered and affected by various external factors, and faults or errors often occur, affecting the operation quality and efficiency of the meteorological sonde. Summary of the Invention

[0004] In view of the above problems and technical requirements, this application proposes an operation method for an airborne dropped meteorological sonde. The technical solution of this application is as follows:

[0005] An operation method for an airborne dropped meteorological sonde, the operation method includes:

[0006] Using ground detection equipment to detect the working status of each pod and the working status of each meteorological sonde respectively, and using ground loading equipment to load the meteorological sonde in working status into each pod with normal working status respectively. Each meteorological sonde establishes data transmission with multiple pods respectively;

[0007] Connecting and hanging multiple pods loaded with meteorological sonde to a flight platform through mechanical interfaces respectively, and correspondingly connecting the electrical interfaces of the pods and the flight platform;

[0008] After controlling the flight platform to carry multiple pods loaded with meteorological sonde to fly to a preset detection point, controlling the pod to use a motion mechanism to load the meteorological sonde to be dropped to the position to be dropped, activating the working frequency of the meteorological sonde to be dropped and injecting satellite ephemeris information, and assisting the satellite signal forwarding in the pod to complete the pre-launch preparation process, then launching the meteorological sonde to be dropped at the position to be dropped out of the pod to complete the drop;

[0009] Each radiosonde released will simultaneously send the detected meteorological sounding data to multiple pods to achieve primary and backup redundancy. The multiple pods will forward the meteorological sounding data of the radiosonde to the aircraft platform, and the aircraft platform will forward the meteorological sounding data to the ground station via the aircraft transmission link.

[0010] After completing the sounding mission, control the flight platform to carry the pod back and conduct the recovery operation at the airfield.

[0011] A further technical solution thereof is that the operation method further includes:

[0012] The ground station converts the meteorological sounding data detected by each meteorological detector received into message report products according to the predetermined data processing standard, and locally stores and uploads them to the management platform.

[0013] A further technical solution thereof is that the aircraft platform forwards the meteorological sounding data to the ground station via the aircraft transmission link, including:

[0014] The aircraft platform completes data preprocessing on the received meteorological sounding data, and then forwards the meteorological sounding data to the ground station via the aircraft transmission link and performs local data storage.

[0015] A further technical solution thereof is that the operation method further includes:

[0016] After completing the connection of the mechanical interface and electrical interface between the pod and the flight platform, run the operation system software at the ground station and check the link status between the flight platform, the pod and the radiosonde through the aircraft link.

[0017] A further technical solution thereof is that detecting the working status of each pod and the working status of each meteorological radiosonde includes:

[0018] Detecting the correctness and integrity of the working status parameters of each pod, and detecting the data measurement performance and data transmission performance of each meteorological radiosonde.

[0019] A further technical solution thereof is that controlling the flight platform to carry the pod back and conduct the recovery operation at the airfield includes:

[0020] Disconnect the electrical interface and mechanical interface between the pod and the flight platform to unload the pod, use the ground detection equipment to detect the working status of each pod respectively, recycle the remaining meteorological radiosondes in the pod, and then pack the pod, the ground detection equipment and the ground filling equipment respectively.

[0021] A further technical solution thereof is that the ground station converts the meteorological sounding data detected by each meteorological radiosonde received into message report products according to the predetermined data processing standard, including:

[0022] For each received radiosonde, perform data verification and data parsing on the detected meteorological sounding data, where the meteorological sounding data includes the temperature, humidity, air pressure, wind direction, and wind speed collected at the current detection position of the radiosonde.

[0023] Use the temperature and humidity collected by the radiosonde at each altitude, combined with the altitude of the radiosonde and the initial air pressure value, to calculate the theoretical air pressure value, and use the theoretical air pressure value to correct the air pressure collected by the radiosonde at the current altitude.

[0024] Use the temperature, humidity, and corrected pressure collected by the radiosonde at each altitude to calculate the air density at the current altitude, and combine the acceleration of the radiosonde to calculate the wind field components and synthesize the wind speed and wind direction at the current altitude.

[0025] Synchronize the temperature, humidity, corrected air pressure, and synthesized wind speed and wind direction at each altitude and generate a message report product.

[0026] A further technical solution is that the meteorological sounding data of the radiosonde further includes the navigation speed of the radiosonde, and the ground station calculates the acceleration of the radiosonde as follows:

[0027] Calculate the change in the detection position of the radiosonde to obtain the speed of the radiosonde, perform speed fusion on the calculated speed and the navigation speed in the meteorological sounding data to obtain the fusion speed of the radiosonde, and use the fusion speed to calculate the acceleration of the radiosonde.

[0028] A further technical solution is that the ground station converting the meteorological sounding data detected by each received radiosonde into a message report product according to a predetermined data processing standard further includes:

[0029] After performing the first data quality control on the meteorological sounding data of each received radiosonde, then perform the step of calculating the theoretical air pressure value by using the temperature and humidity collected by the radiosonde at each altitude, combined with the altitude of the radiosonde and the initial air pressure value;

[0030] And after synchronizing the temperature, humidity, corrected air pressure, and synthesized wind speed and wind direction at each altitude and performing the second data quality control, generate a message report product.

[0031] A further technical solution is that using the theoretical air pressure value to correct the air pressure collected by the radiosonde at the current altitude includes:

[0032] After the temperature, humidity, air pressure detected by the radiosonde at each altitude and the altitude where the detection position is located are respectively subjected to error correction and smoothing filtering, the theoretical air pressure value is calculated, and the air pressure collected by the radiosonde at the current altitude is corrected using the theoretical air pressure value.

[0033] The beneficial technical effects of this application are:

[0034] This application discloses an operation method for an airborne dropped radiosonde. This operation method designs the entire process of the airborne dropping operation of the radiosonde from ground preparation, hanging flight, dropping process, data output to final return and withdrawal. During the ground preparation and hanging flight stages, various verification processes ensure the correctness and integrity of the working state of the equipment, providing a basis for the correct implementation of subsequent sounding operations. And a ephemeris injection method is set in the dropping process. Through this step method, the positioning speed of the radiosonde in the cabin during the flight mission can be effectively shortened, the positioning time can be shortened, the operation interval time can be shortened, and the dropping operation efficiency can be improved. In addition, by mounting multiple pods to execute a detection service, on the one hand, the loading quantity of the radiosonde can be expanded. On the other hand, multiple pods can simultaneously receive the meteorological detection data of the radiosonde, which can achieve primary and backup redundancy, avoiding the problem of data loss in the case of poor data reception signal of a single pod caused by problems such as reception angle, and effectively improving the detection data acquisition rate. Finally, the meteorological detection data reaches the flight platform via the pod and then reaches the ground station through the aircraft transmission link, ensuring the quality and efficiency of the entire sounding operation task execution.

[0035] This operation method provides a standardized operation process, which is beneficial to ensuring the quality of meteorological detection data from the source, ensuring the integrity and accuracy of meteorological detection data. And through standardized safety operation procedures, potential risk points can be identified in advance, corresponding preventive measures can be formulated, and a perfect emergency plan system can be established to ensure that a rapid response can be made in case of emergencies and the safety of personnel and equipment can be protected. In addition, the standardization of meteorological data products can coordinate the data output and reference of different types of airborne dropping systems, reduce data parsing and conversion work, improve the interoperability with data from other countries and regions, and promote the integration and sharing of meteorological data in multiple regions. Brief Description of the Drawings

[0036] Figure 1 is a schematic flowchart of the operation method of the airborne dropped radiosonde in an embodiment of this application.

[0037] Figure 2 is a schematic flowchart of the process of converting the meteorological detection data detected by each radiosonde received by the ground station into a message report product in an embodiment of this application. Detailed Embodiments

[0038] The following further describes the specific implementation manners of the present application in conjunction with the accompanying drawings.

[0039] The present application discloses an operation method for an airborne dropped meteorological sonde. Please refer to Figure 1 the flowchart shown below. This operation method includes the following stages and step processes:

[0040] I. Ground preparation stage

[0041] In this stage, each component device of the airborne dropped sounding operation system is taken out of the packing box and ground detection and pre-flight technical preparations are completed to ensure that it is ready for the next usage state.

[0042] The component devices of the airborne dropped sounding operation system include multiple pods, multiple meteorological sondes, ground detection devices, and ground loading devices. After these component devices are taken out, first, power on the ground detection devices and the ground loading devices in sequence, and then use the ground detection devices to detect the working states of each pod and each meteorological sonde respectively.

[0043] The detection of the working states of the pods and meteorological sondes includes detecting the correctness and integrity of the working state parameters of each pod, so as to provide a basic guarantee for correctly executing the sonde release during subsequent mounting flights, and detecting the data measurement performance and data transmission performance of each meteorological sonde to ensure the accuracy of meteorological data collection in subsequent steps.

[0044] Eliminate or repair the pods and meteorological sondes with abnormal working states to ensure that only the pods and meteorological sondes with normal working states enter the subsequent stage. Then use the ground loading device to load the working state meteorological sondes into each pod with normal working state respectively, and establish a data transmission channel between each meteorological sonde and multiple pods.

[0045] II. Mounting and flying stage

[0046] Connect and mount multiple pods filled with meteorological sondes to the flight platform through mechanical interfaces respectively, and connect the electrical interfaces of the pods and the flight platform correspondingly. Specifically, they can be mounted on the wings, belly or other designated positions of the flight platform.

[0047] After completing the interface connection operation, further, run the operation system software at the ground station and check the link status among the flight platform, the pods, and the sondes through the aircraft link to ensure the reliable and stable operation of the entire system link.

[0048] Then control the flight platform to carry multiple pods filled with meteorological sondes for flight.

[0049] III. Release stage

[0050] After controlling the flight platform to carry multiple pods loaded with radiosondes to fly to a preset detection point, the ground station is controlled to issue a release command for releasing the radiosonde. The release process of the radiosonde is a key part of the entire operation process. According to the composition and technical conditions of the down-dropping radiosonde system, the automatic release process of the radiosonde is designed into two components, including the release preparation process and the release process:

[0051] After entering the release preparation process, first control the pod to use the moving mechanism to take out the radiosonde to be released from the storage position and load it to the position to be released. Then control to activate the radiosonde to be released, so that the radiosonde to be released changes from the standby state to the working state, and configure its working frequency. In addition, the ephemeris injection technology is used to inject satellite ephemeris information into the radiosonde to be released, and assist the satellite signal forwarding in the pod to accelerate the positioning speed of the radiosonde in the pod, effectively shorten the positioning time, which is beneficial to shortening the operation interval time and improving the release operation efficiency.

[0052] After completing the above release preparation process, control the pod to open the hatch, launch the radiosonde to be released at the position to be released out of the pod to complete the release, and finally control the hatch to close and the system to reset.

[0053] IV. Data acquisition and transmission stage

[0054] The radiosonde is built-in with various sensors, including a temperature sensor, a humidity sensor, and a pressure sensor. After each radiosonde is released, it uses the built-in sensors to collect the meteorological detection data at the current position in real time, including the temperature, humidity, pressure, wind direction, and wind speed at the current position.

[0055] Each released radiosonde will send the detected meteorological detection data to multiple pods simultaneously through its own radio transmission device at a specific frequency and signal format to achieve primary and backup redundancy, which can effectively avoid the problem of detection data loss in the case of poor data reception signal of a single pod caused by problems such as the reception angle, and can effectively improve the detection data acquisition rate.

[0056] Multiple pods forward the meteorological detection data of the radiosonde to the aircraft platform, and then the aircraft platform will forward the meteorological detection data to the ground station via the aircraft transmission link. Here, the aircraft transmission link includes a satellite communication link or other communication methods.

[0057] On this basis, the aircraft platform will first complete data preprocessing on the received meteorological detection data and then forward the meteorological detection data to the ground station via the aircraft transmission link, and will also perform local data storage, so as to ensure the accuracy and integrity of the data. The data preprocessing performed includes operations such as data verification and data sorting.

[0058] After receiving the meteorological detection data transmitted by the aircraft platform, the ground station will convert the received meteorological detection data into message report products according to the predetermined data processing standard, save them locally and upload them to the management platform. The predetermined data processing standard is the WMO standard or other custom standards, and finally obtains the level 0 profile data product or the level 1 message report product. The ground station converts the meteorological detection data detected by each meteorological sonde into a message report product according to the predetermined data processing standard, including the following process, please refer to Figure 2 The process diagram shown is:

[0059] (1) Perform data verification and data analysis on the meteorological detection data detected by each meteorological sonde. If the verification fails, the received meteorological detection data is discarded. If the verification succeeds, the original received meteorological detection data is first saved and then the next step of data analysis is performed. The meteorological detection data obtained by analysis includes the temperature, humidity, air pressure, wind direction, wind speed detected by the meteorological sonde at each location (including the longitude, latitude and altitude of the meteorological sonde), and the altitude of the current location. In addition, the meteorological detection data of the meteorological sonde also includes the navigation speed of the meteorological sonde and other status data.

[0060] After the analysis is completed, the data obtained enters the next step of data conversion, and the analyzed data can be visualized. In addition, in order to reduce the impact of noise, the first data quality control is performed on the meteorological detection data received from each meteorological sonde before entering the next step of data conversion. The first data quality control is mainly used to eliminate abnormal values ​​in the analyzed data.

[0061] (2) The temperature and humidity collected by the meteorological sonde at each altitude are combined with the altitude of the meteorological sonde and the initial air pressure value to calculate the theoretical value of air pressure, and the air pressure collected by the meteorological sonde at the current altitude is corrected using the theoretical value of air pressure.

[0062] In order to further improve the accuracy of the data, before this, the temperature, humidity, air pressure detected by the meteorological sonde at each height and the height of the detection position are firstly corrected and smoothed. Then the theoretical value of air pressure is inversely calculated. The specific calculation method can refer to the existing method and will not be repeated here. When using the theoretical value of air pressure to correct the air pressure collected by the meteorological sonde at the current height, a common practice is to perform a weighted fusion of the calculated theoretical value of air pressure and the detected air pressure as the corrected air pressure at the current height.

[0063] (3) Calculate the air density at the current altitude using the temperature, humidity, and corrected pressure collected by the radiosonde at each altitude. Combine the acceleration of the radiosonde to calculate the wind field components and synthesize the wind speed and direction at the current altitude.

[0064] Among them, the acceleration of the radiosonde can be directly calculated using the navigation speed difference of the radiosonde included in the meteorological sounding data. However, to improve accuracy, the following method is used to calculate the acceleration: First, calculate the change in the detection position of the radiosonde to obtain the speed of the radiosonde, and then perform speed fusion on the calculated speed and the navigation speed in the meteorological sounding data to obtain the fused speed of the radiosonde. One approach is to weight the calculated speed and the navigation speed to obtain the fused speed. Then, use the fused speed to perform differential calculation to obtain the acceleration of the radiosonde. The acceleration obtained in this way is more accurate, which is conducive to improving the accuracy of the finally synthesized wind speed and direction. The specific methods for synthesizing air density, wind field components, wind speed, and direction can refer to existing practices and will not be elaborated here. In addition, after obtaining the wind field components, the wind field components will also be filtered and smoothed before synthesis to improve data quality.

[0065] (4) Synchronize the temperature, humidity, corrected air pressure, and synthesized wind speed and direction at each altitude and generate a message report product. To further improve the quality of the generated message report product, after synchronizing the temperature, humidity, corrected air pressure, and synthesized wind speed and direction at each altitude and performing the second data quality control, a message report product is generated. The second data quality control includes range check, time rate of change check, and temperature lapse rate check. The generated message report product includes a graphical display profile and displays data in tabular form. Finally, isobaric surface data, messages, and other specified format data are generated and the generated message report product is saved.

[0066] V. Return and Withdrawal Phase

[0067] After completing the sounding mission, control the flight platform to carry the pod back and perform return and withdrawal, including: disconnecting the electrical and mechanical interfaces between the pod and the flight platform to unload the pod, using ground detection equipment to detect the working status of each pod respectively, recycling the remaining radiosondes in the pod, and then packing the pod, ground detection equipment, and ground filling equipment separately.

Claims

1. An operation method of an airborne dropped meteorological sounding device, characterized in that, The described operation method includes: Using ground detection equipment to detect the working status of each pod and the working status of each radiosonde respectively, using ground loading equipment to load the working radiosondes into each pod with normal working status respectively, and establishing data transmission between each radiosonde and multiple pods; Connecting and mounting multiple pods loaded with radiosondes to the flight platform through mechanical interfaces respectively, and correspondingly connecting the electrical interfaces of the pods and the flight platform; After controlling the flight platform to carry multiple pods loaded with radiosondes to fly to the preset detection point, controlling the pod to use the motion mechanism to load the radiosonde to be dropped to the dropping position, activating the working frequency of the radiosonde to be dropped and injecting satellite ephemeris information, and assisting the satellite signal forwarding in the pod to complete the dropping preparation process, and then launching the radiosonde to be dropped at the dropping position out of the pod to complete the dropping; Each dropped radiosonde simultaneously sends the detected meteorological detection data to multiple pods to achieve primary and backup redundancy, and multiple pods forward the meteorological detection data of the radiosonde to the aircraft platform, and the aircraft platform forwards the meteorological detection data to the ground station via the aircraft transmission link; After completing the sounding mission, control the flight platform to carry the pod back and conduct the backfield recovery.

2. The operation method according to claim 1, wherein The described operation method further includes: The ground station converts the meteorological detection data detected by each radiosonde received according to the predetermined data processing standard into a message report product and locally stores it and uploads it to the management platform.

3. The operation method according to claim 1, characterized in that, The aircraft platform forwards the meteorological detection data to the ground station via the aircraft transmission link, including: The aircraft platform completes data preprocessing on the received meteorological detection data and then forwards the meteorological detection data to the ground station via the aircraft transmission link and conducts local data storage.

4. The operation method according to claim 1, characterized in that The described operation method further includes: After completing the connection of the mechanical interface and the electrical interface between the pod and the flight platform, run the operation system software in the ground station and check the link status between the flight platform, the pod and the radiosonde through the aircraft link.

5. The operation method according to claim 1, wherein Detecting the working status of each pod and the working status of each radiosonde includes: Detecting the correctness and integrity of the working status parameters of each pod, and detecting the data measurement performance and data transmission performance of each radiosonde.

6. The operation method according to claim 1, wherein The control of the flight platform to carry the pod back and conduct the backfield recovery includes: Disconnecting the electrical interface and the mechanical interface between the pod and the flight platform to unload the pod, using the ground detection equipment to detect the working status of each pod respectively, recovering the remaining radiosondes in the pod, and then packing the pod, the ground detection equipment and the ground loading equipment respectively.

7. The operation method according to claim 2, wherein, The ground station converting the meteorological detection data detected by each radiosonde received according to the predetermined data processing standard into a message report product includes: Conducting data verification and data parsing on the meteorological detection data detected by each received radiosonde, and the meteorological detection data includes the temperature, humidity, air pressure, wind direction, and wind speed collected at the current detection position of the radiosonde; The theoretical value of air pressure is calculated by combining the temperature and humidity collected by the radiosonde at each altitude with the altitude of the radiosonde and the initial air pressure value, and the air pressure collected by the radiosonde at the current altitude is corrected using the theoretical value of air pressure; The air density at the current altitude is calculated by using the temperature, humidity, and corrected pressure collected by the radiosonde at each altitude, and the wind field components are calculated in combination with the acceleration of the radiosonde and synthesized to obtain the wind speed and wind direction at the current altitude; The temperature, humidity, corrected air pressure, and synthesized wind speed and wind direction at each altitude are synchronized and a message report product is generated.

8. The operation method according to claim 7, characterized in that, The meteorological detection data of the radiosonde also includes the navigation speed of the radiosonde. The ground station calculates the acceleration of the radiosonde, including: Calculating the change in the detection position of the radiosonde to obtain the speed of the radiosonde, performing speed fusion on the calculated speed and the navigation speed in the meteorological detection data to obtain the fused speed of the radiosonde, and calculating the acceleration of the radiosonde using the fused speed.

9. The operation method according to claim 7, characterized in that, The ground station converting the meteorological detection data detected by each received radiosonde into a message report product according to the predetermined data processing standard further includes: After performing the first data quality control on the meteorological detection data of each received radiosonde, then performing the step of calculating the theoretical value of air pressure by combining the temperature and humidity collected by the radiosonde at each altitude with the altitude of the radiosonde and the initial air pressure value; And generating a message report product after synchronizing the temperature, humidity, corrected air pressure, and synthesized wind speed and wind direction at each altitude and performing the second data quality control.

10. The operation method according to claim 7, wherein Correcting the air pressure collected by the radiosonde at the current altitude using the theoretical value of air pressure includes: After performing error correction and smoothing filtering on the temperature, humidity, air pressure detected by the radiosonde at each altitude and the altitude where the detection position is located respectively, then calculating the theoretical value of air pressure and using the theoretical value of air pressure to correct the air pressure collected by the radiosonde at the current altitude.

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