Coastal GNSS low-altitude atmospheric waveguide detection system

Abstract

The utility model provides a coastal GNSS low-altitude atmospheric waveguide detection system. The coastal GNSS low-altitude atmospheric waveguide detection system comprises an antenna module, a meteorological sensor, a meteorological element acquisition board, an occultation receiver, a distribution box, a support frame and a cement pile. The beneficial effects of the utility model are that remote sensing is selected to detect the atmospheric waveguide problem, a technical scheme of using GNSS occultation signals to invert the atmospheric waveguide is provided, the scheme integrates an occultation detection system and a meteorological station system into one system, the meteorological station system is used to obtain atmospheric waveguide environmental parameters, the GNSS occultation signal receiving power is predicted, and the atmospheric waveguide inversion efficiency is improved. Performing forward simulation; furthermore, the atmospheric waveguide is inverted by using an occultation GNSS signal, the detection precision can be greatly improved by comparing and optimizing actually received GNSS data and a forward simulation result, and the technology only needs to receive the GNSS signal, and is simple to install, convenient to move, low in cost and easy to develop.

Description

Technical Field

[0001] This utility model belongs to the field of atmospheric waveguide detection technology, and in particular relates to a coastal GNSS low-altitude atmospheric waveguide detection system. Background Technology

[0002] When atmospheric ducts are present in the atmosphere, they can significantly alter the propagation path and range of electromagnetic waves, thereby affecting the effective operational performance and tactics of electronic systems such as radar detection, radio communication, interception, and guidance. Timely assessment of the atmospheric duct characteristics at the time can help mitigate their adverse effects, while also leveraging their unique propagation effects to achieve "maximum system effectiveness."

[0003] Atmospheric waveguides fall under the research scope of radio meteorology. Their physical manifestation is the anomaly of the atmospheric refractive index gradient, which is closely related to the prevailing atmospheric environmental parameters and weather conditions. Atmospheric waveguide detection can be divided into two types: contact measurement and remote sensing inversion. The former is the traditional atmospheric waveguide detection technology, including microwave refractometer measurements and meteorological radiosondes. The latter, remote sensing inversion of atmospheric waveguides, has become a research hotspot and challenge in recent years, leading to the development of technologies such as radar sea clutter inversion, scattering signal monitoring inversion, and lidar and microwave radiometer detection. While there are currently many methods for acquiring atmospheric waveguide data, they all have various drawbacks and limitations, such as high measurement and manufacturing costs (direct contact measurement and radar), poor accuracy in near-surface altitude measurements, and poor mobility (radiosondes, microwave radiometers, and forecasting techniques). Utility Model Content

[0004] In view of this, the present invention aims to propose a coastal GNSS low-altitude atmospheric waveguide detection system to solve at least one of the problems existing in the prior art.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0006] A coastal GNSS low-altitude atmospheric waveguide detection system includes an antenna module, a meteorological sensor, a meteorological element acquisition board, an occultation receiver, a power distribution box, a support frame, and cement piles. The bottom of the support frame is installed on the cement piles, and the power distribution box is installed in the middle of the support frame. The meteorological element acquisition board and the occultation receiver are installed in the power distribution box from top to bottom. Both the meteorological element acquisition board and the occultation receiver are communicatively connected to a ground-based industrial control computer. A meteorological sensor is installed on one side of the upper part of the support frame, and the meteorological sensor is connected to the meteorological element acquisition board via a communication cable. The antenna module is installed on the top of the support frame, and the antenna module is connected to the occultation receiver via an radio frequency cable.

[0007] Furthermore, the antenna module includes a positioning antenna and an occultation signal receiving antenna. The positioning antenna is mounted on the top of the support frame with screws, and the occultation signal receiving antenna is mounted vertically on the side of the support frame.

[0008] Furthermore, the receiving end of the positioning antenna faces the zenith and is used to receive direct signals from GPS, BD, GLONASS, and navigation constellations, and transmits them to the occultation receiver for location information processing via radio frequency cables.

[0009] Furthermore, the receiving end of the occultation signal receiving antenna faces outward horizontally and is used to receive tropospheric occultation signals (GNSS signals) from GPS, BD, GLONASS, and GALILEO navigation constellations, and transmit them to the occultation receiver via radio frequency cable for inversion calculation.

[0010] Furthermore, the meteorological sensor is an agricultural six-element meteorological station, which is fixed to the welded bracket of the support frame with screws. It is used to collect temperature, humidity, air pressure, wind speed, wind direction and rainfall intensity, and transmit the meteorological information to the meteorological element acquisition board through communication cables.

[0011] Furthermore, the occultation receiver has precise positioning and orbit determination functions, occultation functions, and transmits the processed occultation data to the ground industrial control computer.

[0012] The meteorological element acquisition board is used to process the information collected by meteorological sensors and transmit it to the ground industrial control computer.

[0013] Furthermore, it also includes a power module, which is installed in the distribution box and located below the occultation receiver. The power module is used to convert external power supply to the voltage required by the meteorological element acquisition board and the occultation receiver.

[0014] Furthermore, it also includes the installation of rivets, by which the support frame is fixed to the cement pile.

[0015] Compared with existing technologies, the coastal GNSS low-altitude atmospheric waveguide detection system described in this utility model has the following advantages:

[0016] This invention relates to a coastal GNSS low-altitude atmospheric waveguide detection system. It addresses the problem of remote sensing atmospheric waveguide detection and proposes a technical solution for inverting atmospheric waveguides using GNSS occultation signals. This solution integrates an occultation detection system with a meteorological station system. The meteorological station system acquires atmospheric waveguide environmental parameters, predicts the received power of the GNSS occultation signal, and performs forward simulation. Furthermore, by inverting the atmospheric waveguide using the occultation GNSS signal and comparing and optimizing the results with the actual received GNSS data, the detection accuracy can be greatly improved. This technology only requires GNSS signal reception, is simple to install, easy to move, low in cost, and easy to implement. Attached Figure Description

[0017] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure as described in an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the overall structural information flow according to an embodiment of the present utility model.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Positioning antenna; 2. Occultation signal receiving antenna; 3. Meteorological sensor; 4. Meteorological element acquisition board; 5. Occultation receiver; 6. Power module; 7. Distribution box; 8. Support frame; 9. Mounting rivets; 10. Cement pile. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0023] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] like Figures 1 to 2 As shown, a coastal GNSS low-altitude atmospheric waveguide detection system includes a positioning antenna 1, an occultation signal receiving antenna 2, a meteorological sensor 3, a meteorological element acquisition board 4, an occultation receiver 5, a power module 6, a power distribution box 7, a support frame 8, mounting rivets 9, and cement piles 10.

[0027] The positioning antenna 1 is mounted on the top of the support frame 8 with screws, and the receiving end faces the zenith. It is used to receive direct signals from GPS, BD, GLONASS, and navigation constellations, and transmits them to the occultation receiver 5 for location information processing via an RF cable. The occultation signal receiving antenna 2 is mounted vertically on the side of the support frame 8 with the receiving end facing outwards. It is used to receive tropospheric occultation signals (GNSS signals) from GPS, BD, GLONASS, and GALILEO navigation constellations, and transmits them to the occultation receiver 5 for inversion calculation via an RF cable. The meteorological sensor 3 is a commonly used agricultural six-element meteorological station, fixed to the welded bracket of the support frame 8 with screws. It can collect temperature, humidity, air pressure, wind speed, wind direction, and rainfall intensity, and transmit the meteorological information to the meteorological element acquisition board 4 via a communication cable. The meteorological element acquisition board 4, the occultation receiver 5, and the power module 6 are all installed in the distribution box 7. The distribution box 7 is a commonly used outdoor rainproof box to protect the internal units from rain. The power module 6 is used to convert external power supply to the voltage required by the meteorological element acquisition board 4 and the occultation receiver 5. The occultation receiver 5 includes functions such as precise positioning and orbit determination, and occultation. It transmits the processed occultation data to the ground control system. The meteorological element acquisition board 4 is used to process the information collected by the meteorological sensors and transmit it to the ground control system. The support frame 8 is fixed to the cement pile 10 by mounting rivets 9.

[0028] This invention addresses the problem of remote sensing atmospheric waveguide detection and proposes a technical solution for inverting atmospheric waveguides using GNSS occultation signals. This solution integrates an occultation detection system with a meteorological station system. The meteorological station system is used to acquire atmospheric waveguide environmental parameters, predict the received power of the GNSS occultation signal, and perform forward simulation. Furthermore, the atmospheric waveguide is inverted using the occultation GNSS signal, and the detection accuracy is significantly improved by comparing and optimizing the actual received GNSS data with the forward simulation results. Moreover, this technology only requires GNSS signal reception, is simple to install, easy to move, low in cost, and easy to implement.

[0029] This research was supported by the Tianjin Science and Technology Program (Project No.: 23YFYSHZ00290).

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A coastal GNSS low-altitude atmospheric waveguide detection system, characterized in that: The system includes an antenna module, a meteorological sensor (3), a meteorological element acquisition board (4), an occultation receiver (5), a power distribution box (7), a support frame (8), and a cement pile (10). The bottom of the support frame (8) is installed on the cement pile (10), and the power distribution box (7) is installed in the middle of the support frame (8). The meteorological element acquisition board (4) and the occultation receiver (5) are installed in the power distribution box (7) from top to bottom. The meteorological element acquisition board (4) and the occultation receiver (5) are both connected to the ground industrial control computer. The meteorological sensor (3) is installed on one side above the support frame (8), and the meteorological sensor (3) is connected to the meteorological element acquisition board (4) through a communication cable. The antenna module is installed on the top of the support frame (8), and the antenna module is connected to the occultation receiver (5) through a radio frequency cable. The antenna module includes a positioning antenna (1) and an occultation signal receiving antenna (2). The positioning antenna (1) is mounted on the top of the support frame (8) by screws, and the occultation signal receiving antenna (2) is mounted vertically on the side of the support frame (8). The receiving end of the positioning antenna (1) faces the zenith and is used to receive direct signals from GPS, BD, GLONASS and navigation constellations, and transmits them to the occultation receiver (5) for location information processing via radio frequency cable; The receiving end of the occultation signal receiving antenna (2) faces outward horizontally and is used to receive tropospheric occultation signals (GNSS signals) from GPS, BD, GLONASS, and GALILEO navigation constellations. The signals are then transmitted to the occultation receiver (5) via radio frequency cable for inversion calculation. The meteorological sensor (3) is an agricultural six-element meteorological station, which is fixed to the support frame (8) welding bracket by screws. It is used to collect temperature, humidity, air pressure, wind speed, wind direction and rainfall intensity, and transmit meteorological information to the meteorological element acquisition board (4) through communication cable.

2. The coastal GNSS low-altitude atmospheric waveguide detection system according to claim 1, characterized in that: The occultation receiver (5) has precise positioning and orbit determination, occultation function, and transmits the processed occultation data to the ground industrial control computer.

3. A coastal GNSS low-altitude atmospheric waveguide detection system according to claim 1, characterized in that: The meteorological element acquisition board (4) is used to process the information collected by the meteorological sensor (3) and transmit it to the ground industrial control computer.

4. A coastal GNSS low-altitude atmospheric waveguide detection system according to claim 1, characterized in that: It also includes a power module (6), which is installed in the distribution box (7) and located below the occultation receiver (5). The power module (6) is used to convert the external power supply to the voltage required by the meteorological element acquisition board (4) and the occultation receiver (5).

5. A coastal GNSS low-altitude atmospheric waveguide detection system according to claim 1, characterized in that: It also includes mounting rivets (9), the support frame (8) being fixed to the cement pile (10) by mounting rivets (9).

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