Airship floating detection system

Abstract

The utility model provides an airship floating detection system. A rear end detection load, a data processing system, a data storage module and a pre-amplifier are arranged in an airship aviation cabin. The number of the pre-amplifiers is multiple, one end of each pre-amplifier is connected with an antenna arranged on the periphery of the aviation cabin, the other end of each pre-amplifier is connected with a rear-end detection load, and the pre-amplifiers are configured to transmit received detection signals to the rear-end detection load; the rear-end detection load is connected with the data storage module through the data processing system, the data processing system is configured to perform data processing on the received original detection data and send the data to the data storage module, and the data storage module is configured to perform data downloading on the stored detection data. Compared with a satellite detection technology, the system provided by the utility model can achieve lower detection cost, can guarantee the stability and reliability of data detection, and has a large commercial value.

Description

Technical Field

[0001] The utility model belongs to the technical field of airship floating detection, and particularly relates to an airship floating detection system. Background Art

[0002] With the rapid development of commercial spaceflight and airship floating detection technology, corresponding occultation detection, navigation detection, and sea echo detection technologies have also developed vigorously. The basic principle of the above detection technologies is to receive navigation signals from the Global Navigation Satellite System (GNSS) through specific data detection payloads for processing and calculation, so as to obtain the required detection data. Among them, occultation signals and navigation signals refer to the fact that when GNSS signals pass through the atmosphere and ionosphere, important parameters such as the frequency, phase, and amplitude of the signal itself will change. The information carried by these changes will carry the temperature and humidity information of the atmosphere along the signal path and the electron density information of the ionosphere. The sea echo signal refers to the fact that after the GNSS signal is sent to the sea surface and reflected back to the detection payload through the sea surface, the reflected signal will carry real-time information on the sea surface, including sea surface wind field information or extreme ocean weather information. In the above process, the satellite payload will actively receive the GNSS signal carrying key detection information and perform inversion through relevant algorithms to obtain important detection information such as real-time atmospheric temperature, humidity, air pressure, ionospheric electron density, and sea surface wind field height. This plays a crucial role in aspects such as space environment monitoring, enhancing the positioning accuracy of the navigation system, improving the accuracy of weather prediction, and extreme weather warning.

[0003] However, in the current commercial spaceflight field, the expensive rocket launch costs and various spaceflight test experiments that the satellite payload needs to conduct, such as anti-radiation experiments and thermal vacuum experiments, result in the cost of a single satellite payload from design, performance verification, testing, and finally in-orbit operation often being calculated in tens of millions of yuan. And a separate satellite payload often needs to be equipped with an independent data receiving antenna. Generally, a single payload needs to be equipped with three antenna modules for receiving forward, backward, and positioning signals. The design, manufacture, performance verification, and testing of the antenna also require a very large cost expenditure. This has led to the antenna module design becoming a severe issue for the simultaneous detection requirements of multiple detection payloads. Summary of the Utility Model

[0004] In view of this, the utility model aims to propose an airship floating detection system to solve at least one of the above problems.

[0005] To achieve the above object, the technical solution of the utility model is realized as follows:

[0006] The utility model provides an airship floating detection system, in which a rear-end detection payload, a data processing system, a data storage module, and a preamplifier are configured in the airship's aviation cabin;

[0007] A plurality of preamplifiers are configured. One ends of the plurality of preamplifiers are connected to antennas arranged on the periphery of the aircraft cabin, and the other ends are connected to the backend detection payload. The preamplifiers are configured to transmit the received detection signals to the backend detection payload;

[0008] The backend detection payload is connected to the data storage module through the data processing system. The data processing system is configured to process the received original detection data and send it to the data storage module. The data storage module is configured to download the stored detection data.

[0009] Further, three preamplifiers are configured. The three preamplifiers are respectively connected to a forward antenna, a backward antenna, and a positioning antenna arranged on the periphery of the aircraft cabin;

[0010] The forward antenna is arranged in front of the flight direction of the airship cabin, the backward antenna is arranged behind the flight direction of the airship cabin, and the positioning antenna is located on the top of the airship cabin.

[0011] Further, the preamplifier includes a microwave switch, a band-pass filter, a low-noise amplifier, a low-pass filter, a high-pass filter, and a one-to-three power divider connected in sequence;

[0012] The microwave switch is connected to the antenna arranged at the front end, and the one-to-three power divider is connected to the backend detection payload.

[0013] Further, the backend detection payload includes an occultation data detection payload, a navigation data detection payload, and a sea clutter data detection payload. The occultation data detection payload, the navigation data detection payload, and the sea clutter data detection payload are connected to the one-to-three power divider arranged at the front end;

[0014] The occultation data detection payload, the navigation data detection payload, and the sea clutter data detection payload are all connected to the data processing system.

[0015] Further, a high-speed transmission interface is configured on the data processing system. The high-speed transmission interface is connected to the data storage module through a coaxial cable;

[0016] The data storage module is connected to an aviation plug through the high-speed transmission interface for data download.

[0017] Further, a heating module and a temperature sensor connected to the heating module are also arranged in the aircraft cabin. The temperature sensor is arranged near the payload.

[0018] Further, two power modules are also provided in the aerocabin. One of the power modules is used to supply power to the sea anti-data detection payload and the data processing system, and the other power module is used to supply power to the occultation data detection payload and the navigation data detection payload.

[0019] Further, the two power modules are respectively connected to an external power supply device through aviation plugs.

[0020] Compared with the prior art, the airship floating detection system of the present invention has the following beneficial effects:

[0021] The airship floating detection system of the present invention, by taking advantage of the characteristic that the floating detection airship can fly stably for a long time in the high-altitude environment, configures a rear-end detection payload, a data processing system, a data storage module and a preamplifier in the aerocabin of the airship to meet the signal reception requirements of the detection payload. Compared with satellite detection technology, it can achieve lower detection costs, and at the same time can ensure the stable and reliable data detection, and has great commercial value. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0023] Figure 1 is a schematic circuit structure diagram of an airship floating detection system according to an embodiment of the present invention;

[0024] Figure 2 is an internal principle block diagram of the preamplifier according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0026] The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0027] Please refer to Figure 1 As shown, this embodiment provides an airship floating detection system. A rear-end detection payload, a data processing system, a data storage module and a preamplifier are configured in the aerocabin of the airship;

[0028] A plurality of preamplifiers are configured. One ends of the plurality of preamplifiers are connected to antennas arranged outside the aerocabin, and the other ends are connected to the rear-end detection payload. The preamplifiers are configured to transmit the received detection signals to the rear-end detection payload;

[0029] The backend detection payload is connected to the data storage module through a data processing system. The data processing system is configured to process the received raw detection data and send it to the data storage module. The data storage module is configured to download the stored detection data.

[0030] Specifically, in this embodiment, a floating detection airship is used as the payload carrying basis. The backend detection payload is placed in the aviation cabin of the airship. By reasonably planning the detection signal transmission path and designing the signal transmission mode, an independent data processing system module and a detection data storage module are added in the aviation cabin to achieve real-time processing and real-time storage of detection data. The independent storage module can also ensure the security and reliability of detection data. Even if other parts malfunction, it will not affect the backend detection data. Then, according to actual needs, the detection data is downloaded.

[0031] A floating airship detection system described in this embodiment can take advantage of the characteristic that a floating detection airship can fly stably for a long time in a high-altitude environment. A backend detection payload, a data processing system, a data storage module, and a preamplifier are configured in the aviation cabin of the airship to meet the signal reception requirements of the detection payload. Compared with satellite detection technology, it can achieve a lower detection cost, and at the same time, it can ensure the stability and reliability of data detection, with great commercial value. This detection system has been successfully applied in a certain airship project.

[0032] In some embodiments, three preamplifiers are configured. The three preamplifiers are respectively connected to the forward antenna, the backward antenna, and the positioning antenna arranged outside the aviation cabin.

[0033] The forward antenna is arranged in front of the flight direction of the airship aviation cabin, the backward antenna is arranged behind the flight direction of the airship aviation cabin, and the positioning antenna is located at the top of the airship aviation cabin.

[0034] As Figure 2 shown, each preamplifier includes a microwave switch, a band-pass filter, a low-noise amplifier, a low-pass filter, a high-pass filter, and a one-to-three power divider connected in sequence.

[0035] The microwave switch is connected to the antenna arranged at the front end, and the one-to-three power divider is connected to the backend detection payload.

[0036] Specifically, in this embodiment, the outermost part of the system is the detection data receiving antenna. The detection antenna is divided into three types for receiving detection information of different frequency points, namely the forward antenna, the backward antenna, and the positioning antenna. The forward antenna needs to be placed in front of the flight direction of the airship aviation cabin, the backward antenna needs to be placed behind the flight direction of the airship aviation cabin, and the positioning antenna is located at the top of the aviation cabin to receive positioning signals.

[0037] The initial detection information collected by the antenna is very weak and needs to be preprocessed by the preamplifier module. The preprocessing mainly includes filtering, frequency selection, and amplification of the detection signal, and amplifying the detection signal to the power intensity that can be recognized by the internal data processing unit of the payload.

[0038] After the antenna collects the detection signal, it sends it to the internal microwave switch. The function of the microwave switch is to select and pass the input of the front-end signal. When the microwave switch is closed, the detection signal passes through smoothly. When the microwave switch is open, the detection signal cannot pass through, and the microwave switch conducts with the RF matching resistor.

[0039] When the microwave switch is in the closed state, the RF signal first passes through the band-pass filter to pre-filter the signal and filter out irrelevant clutter. Then the signal passes through the LNA at the back end, which is a Low Noise Amplifier, and its function is to amplify the power of the RF signal to meet the intensity requirements of the detection signal for the back-end payload. Low-pass filters and high-pass filters are added at the back end to filter the RF signal twice to ensure the reliability of the RF signal entering the back end.

[0040] Among them, three preamplifiers are set inside the cabin, which are used to receive the detection signals of three external antennas respectively, and then perform a one-to-three power division process respectively. In this way, the detection information of three types can be sent to the back-end detection payload respectively to meet the data reception requirements of the three payloads.

[0041] In some embodiments, the back-end detection payload includes occultation data detection payload, navigation data detection payload, and sea clutter data detection payload. The occultation data detection payload, navigation data detection payload, and sea clutter data detection payload are connected to the one-to-three power divider set at the front end;

[0042] The occultation data detection payload, navigation data detection payload, and sea clutter data detection payload are all connected to the data processing system.

[0043] Specifically, in this embodiment, the back-end detection payloads are respectively the occultation data detection payload, the navigation information detection payload, and the sea clutter data detection payload. The basic data processing architecture of the three satellite detection payloads is the ARM+FPGA architecture. The reason for adopting this architecture is that the FPGA has rich processor resources and high-speed communication serial port resources, which are specifically used for large-capacity data processing and can meet the data processing requirements of the detection payload; the ARM itself has the characteristics of a small program size and convenient operation and can be used as the main control module of the payload unit.

[0044] After the above detection payload finishes processing the detection data, it sends three types of data to the data processing system module at the back end through the LVDS interface configured for the payload, which is used to further process, analyze, and package the original detection data and send it to the subsequent data storage module for storage.

[0045] The architecture of the data processing system is an FPGA+FPGA architecture. The reason for choosing this architecture is that the functional positioning of the data processing system is to process a large amount of original detection data at the front end, decode it to obtain secondary data that can be analyzed by the analysis software. This requires the processing system to have a large number of processor resources. Therefore, two FPGAs of the V7 series are selected for data processing in this module. The FPGAs of the V7 series have a large number of logic resources and storage resources, as well as rich IP cores, meeting the real-time processing requirements of the three types of detection data.

[0046] In some embodiments, a high-speed transmission interface is configured on the data processing system, and the high-speed transmission interface is connected to the data storage module through a coaxial cable;

[0047] The data storage module is connected to the aviation plug through the high-speed transmission interface for data download.

[0048] Specifically, in this embodiment, after the data processing system finishes processing the original detection data, it transmits the detection data at high speed to the data storage board through the high-speed transmission interface 2711. The data storage board uses 8 NAND Flash memories of 256 Gb as the main module, with a total capacity of 2048 Gb. Its main function is to save the processed detection data and download the data. The 2711 high-speed transmission interface is a high-speed differential serial interface, with a data transmission rate of 2 Gbps, and no additional clock is required for data transmission. The data transmission cable uses a coaxial cable for transmission, and the transmission rate of the coaxial cable can support up to 10 Gbps, meeting the high-speed transmission requirements of large-capacity data.

[0049] After that, according to the overall instruction, the data storage system connects the stored detection data to the aviation plug through the 2711 high-speed interface for data download.

[0050] In some embodiments, a heating module and a temperature sensor connected to the heating module are also provided in the aircraft cabin, and the temperature sensor is arranged near the payload.

[0051] Specifically, in this embodiment, a temperature sensor and a heating module are added inside the aircraft cabin. The temperature sensor is fastened near the payload by screws and is used to monitor the ambient temperature near the payload in real time. When the airship is flying stably at high altitude, since the ambient temperature at high altitude is generally below 0°C, when the temperature sensor detects that the temperature is lower than 0°C, it will send a signal to the heating module. At this time, the heating module starts to work and heats the payload cabin, so that the overall temperature inside the cabin rises and is maintained at a suitable working temperature for the payload. The heating module is fixed to the bottom plate of the aircraft cabin by screws and is powered by 28V introduced through an aviation plug.

[0052] This application takes into account that the working environment of the airship floating detection airship is at high altitude, and the actual payload temperature will be relatively low. Therefore, a temperature sensor and a heating module are designed inside the airship to regulate the overall cabin environment temperature to ensure that the payload can work normally and stably.

[0053] In some embodiments, two power modules are also provided inside the aircraft cabin. One of the power modules is used to supply power to the sea clutter data detection payload and the data processing system, and the other power module is used to supply power to the occultation data detection payload and the navigation data detection payload.

[0054] The two power modules are respectively connected to external power supply devices through aviation plugs.

[0055] Specifically, in this embodiment, for the working payload inside the overall payload cabin, two separate power modules are added for power supply. This power supply module supports 28V input, wide voltage input, with a voltage input range of 18 - 35V, and outputs a stable 12V working voltage. Among them, power module 1 supplies power to the sea clutter payload and the data processing system, and power module 2 supplies power to the occultation payload and the navigation payload. In this way, the power supply of each module can be independent and not affect each other.

[0056] This application configures two independent DC-DC power modules according to the actual needs of the payload to convert the primary power of 28V into 12V power required for the payload to work, and provides stable and reliable power supply for the payload, data processing system and data storage board. In addition, the external interface of the detection system uses special aviation plugs and sockets, which not only have the functions of waterproof and dustproof, but also have an anti-misinsertion design, can withstand extreme conditions such as vibration and temperature changes during flight, and ensure the stable operation of data transmission of the airship floating equipment.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of the present invention, and they should all be covered by the scope of the claims and the description of the present invention.

[0058] The foregoing is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An airship floating detection system, characterized in that: The airship cabin is equipped with a back-end detection payload, a data processing system, a data storage module and a preamplifier; The preamplifier is configured in plurality, one end of the plurality of preamplifiers is connected to an antenna arranged outside the aviation cabin, and the other end is connected to the rear-end detection load, and the preamplifier is configured to transmit the received detection signal to the rear-end detection load; The back-end detection load is connected to the data storage module through the data processing system. The data processing system is configured to process the received raw detection data and send it to the data storage module. The data storage module is configured to download the stored detection data.

2. The airship floating detection system according to claim 1, characterized in that: There are three preamplifiers, which are respectively connected to the forward antenna, the rear antenna and the positioning antenna arranged outside the aviation cabin; The forward antenna is arranged in front of the flying direction of the airship cabin, the backward antenna is arranged in the rear of the flying direction of the airship cabin, and the positioning antenna is located on the top of the airship cabin.

3. The airship floating detection system according to claim 2, characterized in that: The preamplifier includes a microwave switch, a bandpass filter, a low noise amplifier, a low pass filter, a high pass filter and a one-to-three power divider connected in sequence; The microwave switch is connected to an antenna arranged at the front end, and the one-to-three power divider is connected to the rear end detection load.

4. The airship floating detection system according to claim 3, characterized in that: The back-end detection payload includes an occultation data detection payload, a navigation data detection payload, and a sea reflection data detection payload, and the occultation data detection payload, the navigation data detection payload, and the sea reflection data detection payload are connected to the one-to-three power splitter provided at the front end; The occultation data detection payload, the navigation data detection payload, and the sea reflection data detection payload are all connected to the data processing system.

5. The airship floating detection system according to claim 1, characterized in that: The data processing system is provided with a high-speed transmission interface, and the high-speed transmission interface is connected to the data storage module via a coaxial cable; The data storage module is connected to the aviation plug via a high-speed transmission interface to transfer data.

6. The airship floating detection system according to claim 1, characterized in that: The aviation cabin is also provided with a heating module and a temperature sensor connected to the heating module, and the temperature sensor is arranged near the load.

7. The airship floating detection system according to claim 4, characterized in that: Two power modules are also provided in the aviation cabin, wherein one power module is used to supply power to the sea reflection data detection payload and the data processing system, and the other power module is used to supply power to the occultation data detection payload and the navigation data detection payload.

8. The airship floating detection system according to claim 7, characterized in that: The two power modules are connected to external power supply equipment via aviation plugs respectively.

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