CN118425994A - Shipborne satellite and onboard satellite signal simulation generation system thereof - Google Patents
Shipborne satellite and onboard satellite signal simulation generation system thereof Download PDFInfo
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Abstract
The application belongs to the technical field of test and test of shipborne satellites and airborne satellite related systems thereof, and particularly relates to a shipborne satellite and an airborne satellite signal simulation generation system thereof, which utilize a synchronous control module to generate a high-precision clock signal, provide a standard 10MHz sine time service signal and a standard 1PPS pulse correction signal for a shipborne satellite signal generation module and an airborne satellite signal generation module, realize that the shipborne satellite signal generation module and the airborne satellite signal generation module generate satellite simulation signals, further provide synchronous satellite simulation signals for the shipborne satellite and the airborne satellite, and can well match satellite signals required by test and test in a laboratory environment.
Description
Technical Field
The application belongs to the technical field of test and test of on-board satellites and on-board satellite related systems thereof, and particularly relates to an on-board satellite and an on-board satellite signal simulation generation system thereof.
Background
In the full-automatic landing technology, a differential satellite positioning technology is adopted, a guiding system utilizes shipborne satellite observation data to generate differential enhancement information and integrity parameters, then the differential enhancement information and the integrity parameters are transmitted to an airplane together with ship motion information through a landing guiding data chain, an onboard satellite navigation device utilizes the onboard satellite observation data, the differential enhancement information and the integrity parameters to carry out positioning calculation, the relative positions of the ship and the airplane are obtained, the integrity state of the onboard satellite device is evaluated, and then the ship motion information, the landing guiding parameters and the airplane motion information are combined, so that the deviation of landing of the airplane on the ship and an ideal glide slope is obtained.
Currently, on-board satellites and related systems of the on-board satellites are tested, real satellite signals are mostly adopted, and the following defects exist in the laboratory environment:
1) Due to the interference of clock limitation and external factors, the on-board satellite and on-board satellite observation data are difficult to synchronize and homologous;
2) The real satellite signals are easily influenced by factors such as weather, satellite positions, antenna placement positions and the like, and satellite signals required by test can not be well matched;
3) The real satellite signal is a static scene in a laboratory environment, so that the requirements of the test on various test conditions are difficult to meet, and the test under various scenes is difficult to develop.
The present application has been made in view of the above-described technical drawbacks.
Disclosure of Invention
It is an object of the present application to provide an onboard satellite and an onboard satellite signal simulation generation system thereof, which overcome or mitigate at least one technical disadvantage of the known art.
The technical scheme of the application is as follows:
The system comprises a comprehensive control module, a synchronous control module, a shipborne satellite signal generation module and an airborne satellite signal generation module;
The synchronous control module adopts a high-precision tamed rubidium atomic clock to generate a high-precision clock signal, and provides a standard 10MHz sine time service signal and a standard 1PPS pulse correction signal for the shipborne satellite signal generation module and the airborne satellite signal generation module;
the comprehensive control module calculates and generates corresponding mathematical simulation data by receiving the external or reading the point location file of the comprehensive control module, and transmits the mathematical simulation data to the shipborne satellite signal generation module and the airborne satellite signal generation module;
The shipborne satellite signal generation module uses a standard 10MHz sine time service signal to time the clock, uses a standard 1PPS pulse correction signal to correct the clock, analyzes the data simulation data, generates a corresponding radio frequency signal, wherein the radio frequency signal is a satellite simulation signal, specifically comprises GPS and BD2 radio frequency signals, and is transmitted to a shipborne satellite;
The airborne satellite signal generation module uses a standard 10MHz sine time service signal to time the clock, uses a standard 1PPS pulse correction signal to correct the clock, analyzes the data simulation data, generates a corresponding radio frequency signal, and specifically comprises GPS and BD2 radio frequency signals, and transmits the radio frequency signal to an airborne satellite.
According to at least one embodiment of the present application, in the on-board satellite and the on-board satellite signal simulation generation system thereof, the integrated control module main control unit can refer to an interference mode of a satellite signal, including multipath interference and narrowband interference, and exert an influence on a bit file.
According to at least one embodiment of the present application, in the on-board satellite and the on-board satellite signal simulation generation system thereof, the synchronization control module provides a standard 1PPS pulse correction signal for the integrated control module;
the integrated control module corrects the clock using a standard 1PPS pulse correction signal.
According to at least one embodiment of the present application, in the on-board satellite and the on-board satellite signal simulation generation system thereof, the integrated control module is composed of a PC or an industrial personal computer, and is provided with a clock card and a plurality of ethernet cards.
According to at least one embodiment of the present application, in the above-mentioned shipborne satellite and its onboard satellite signal simulation generation system, the integrated control module is embedded with a main control unit and a mathematical simulation unit, where the main control unit can receive an external or read a point location file of itself and transmit the point location file to the mathematical simulation unit, and the mathematical simulation unit calculates and generates corresponding mathematical simulation data, including pseudo-ranges, speeds, accelerations, jerks and powers of the satellites, and transmits the pseudo-ranges, speeds, accelerations and powers to the shipborne satellite signal generation module and the onboard satellite signal generation module.
The application has at least the following beneficial technical effects:
the system comprises a synchronous control module, a synchronous signal generation module, a satellite signal transmission module and a satellite signal transmission module.
Drawings
Fig. 1 is a schematic diagram of an onboard satellite and an onboard satellite signal simulation generation system thereof according to an embodiment of the present application.
For the purpose of better illustrating the embodiments, certain elements of the drawings are omitted, enlarged or reduced in size and do not represent the actual product dimensions, and furthermore, the drawings are for illustrative purposes only and are not to be construed as limiting the application.
Detailed Description
In order to make the technical solution of the present application and its advantages more clear, the technical solution of the present application will be further and completely described in detail with reference to the accompanying drawings, it being understood that the specific embodiments described herein are only some of the embodiments of the present application, which are for explanation of the present application and not for limitation of the present application. It should be noted that, for convenience of description, only a portion related to the present application is shown in the drawings, and other related portions may refer to a general design.
Furthermore, unless defined otherwise, technical or scientific terms used in the description of the application should be given the ordinary meaning as understood by one of ordinary skill in the art to which the application pertains. The words used in the description of the present application to indicate directions are merely used to indicate relative directions or positional relationships, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed accordingly. As used in this description of the application, the word "comprising" or "comprises" does not exclude the presence of other elements or items listed after the word, and the like.
In addition, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and the like as used in the description of the present application should be construed broadly, and may be, for example, fixed or removable; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate medium, and a person skilled in the art can understand the specific meaning in the present application according to the specific circumstances.
The application provides a shipborne satellite and an onboard satellite signal simulation generation system thereof, which comprise a comprehensive control module, a synchronous control module, a shipborne satellite signal generation module and an onboard satellite signal generation module, wherein the comprehensive control module, the synchronous control module, the shipborne satellite signal generation module and the onboard satellite signal generation module are shown in figure 1.
The synchronous control module adopts a high-precision tamed rubidium atomic clock to generate a high-precision clock signal, provides a standard 10MHz sine time service signal for the shipborne satellite signal generation module and the airborne satellite signal generation module, and provides a standard 1PPS pulse correction signal for the comprehensive control module, the shipborne satellite signal generation module and the airborne satellite signal generation module.
The comprehensive control module corrects the clock by using the standard 1PPS pulse correction signal, calculates and generates corresponding mathematical simulation data by receiving an external or reading self point location file, and transmits the mathematical simulation data to the shipborne satellite signal generation module and the onboard satellite signal generation module.
The integrated control module is composed of a PC or an industrial personal computer, and is provided with a clock card and a plurality of Ethernet cards. The comprehensive control module is embedded with a main control unit and a mathematical simulation unit, wherein the main control unit can receive the external or read self point location file and transmit the point location file to the mathematical simulation unit, the mathematical simulation unit calculates and generates corresponding mathematical simulation data comprising pseudo ranges, speeds, accelerations, jerks, powers and the like of all satellites, and transmits the pseudo ranges, speeds, accelerations, jerks, powers and the like to the shipborne satellite signal generation module and the airborne satellite signal generation module.
The mathematical simulation unit workflow may be designed as follows:
Starting digital simulation software, and performing digital simulation task design works such as digital simulation model selection, digital simulation model parameter configuration and the like;
loading a digital simulation task script, and carrying out digital simulation task initialization setting;
Inquiring a network interface and waiting for a point location file;
after the point location file is received, calculating to generate corresponding mathematical simulation data;
and transmitting the mathematical simulation data to the on-board satellite signal generating module and the on-board satellite signal generating module.
The shipborne satellite signal generation module uses a standard 10MHz sine time service signal to time the clock, uses a standard 1PPS pulse correction signal to correct the clock, analyzes the data simulation data, generates a corresponding radio frequency signal, and particularly can comprise GPS and BD2 radio frequency signals, and transmits the radio frequency signal to the shipborne satellite.
The airborne satellite signal generation module uses a standard 10MHz sine time service signal to time the clock, uses a standard 1PPS pulse correction signal to correct the clock, analyzes the data simulation data, generates a corresponding radio frequency signal, and can specifically comprise GPS and BD2 radio frequency signals, and transmits the radio frequency signal to an airborne satellite.
According to the shipborne satellite and the onboard satellite signal simulation generation system thereof disclosed by the embodiment, the synchronous control module is utilized to generate a high-precision clock signal, a standard 10MHz sine time service signal and a standard 1PPS pulse correction signal are provided for the shipborne satellite signal generation module and the onboard satellite signal generation module, the shipborne satellite signal generation module and the onboard satellite signal generation module are realized to generate satellite simulation signals, and further synchronous satellite simulation signals are provided for transmission of shipborne satellites and onboard satellites, and satellite signals required by test can be well matched in a laboratory environment.
The comprehensive control module main control unit can refer to the interference modes of satellite signals, such as multipath interference, narrowband interference and the like, exert influence on the position file, and finally can be embodied in mathematical simulation data calculated and generated by the mathematical simulation unit and satellite analog signals generated by the shipborne satellite signal generation module and the airborne satellite signal generation module, so that the requirements of shipborne satellites and the airborne satellite related system test on various test conditions can be met, and the test under various scenes can be carried out.
It will be further appreciated by those skilled in the art that the various modules and units of the disclosed apparatus of the present application may be implemented in electronic hardware, computer software, or combinations thereof, and that the functions are generally described herein in terms of whether they are implemented in hardware or software, depending on the specific application and design constraints of the solution, which may be selected by those skilled in the art to implement the described functions in various ways for each specific application and its practical constraints, for clarity of illustration, but such implementation should not be deemed to be beyond the scope of the present application.
Having thus described the technical aspects of the present application with reference to the preferred embodiments shown in the drawings, it should be understood by those skilled in the art that the scope of the present application is not limited to the specific embodiments, and those skilled in the art may make equivalent changes or substitutions to the related technical features without departing from the principle of the present application, and those changes or substitutions will fall within the scope of the present application.
Claims (5)
1. The system is characterized by comprising a comprehensive control module, a synchronous control module, a shipborne satellite signal generation module and an airborne satellite signal generation module;
The synchronous control module adopts a high-precision tamed rubidium atomic clock to generate a high-precision clock signal, and provides a standard 10MHz sine time service signal and a standard 1PPS pulse correction signal for the shipborne satellite signal generation module and the airborne satellite signal generation module;
the comprehensive control module calculates and generates corresponding mathematical simulation data by receiving the external or reading the point location file of the comprehensive control module, and transmits the mathematical simulation data to the shipborne satellite signal generation module and the airborne satellite signal generation module;
The shipborne satellite signal generation module uses a standard 10MHz sine time service signal to time the clock, uses a standard 1PPS pulse correction signal to correct the clock, analyzes the data simulation data, generates a corresponding radio frequency signal, wherein the radio frequency signal is a satellite simulation signal, specifically comprises GPS and BD2 radio frequency signals, and is transmitted to a shipborne satellite;
The airborne satellite signal generation module uses a standard 10MHz sine time service signal to time the clock, uses a standard 1PPS pulse correction signal to correct the clock, analyzes the data simulation data, generates a corresponding radio frequency signal, and specifically comprises GPS and BD2 radio frequency signals, and transmits the radio frequency signal to an airborne satellite.
2. The on-board satellite and its on-board satellite signal simulation generation system according to claim 1, wherein,
The comprehensive control module main control unit can refer to the interference mode of satellite signals, including multipath interference and narrowband interference, and exert influence on the point file.
3. The on-board satellite and its on-board satellite signal simulation generation system according to claim 1, wherein,
The synchronous control module provides a standard 1PPS pulse correction signal for the comprehensive control module;
the integrated control module corrects the clock using a standard 1PPS pulse correction signal.
4. The on-board satellite and its on-board satellite signal simulation generation system according to claim 1, wherein,
The integrated control module is composed of a PC or an industrial personal computer, and is provided with a clock card and a plurality of Ethernet cards.
5. The on-board satellite and its on-board satellite signal simulation generation system according to claim 1, wherein,
The comprehensive control module is embedded with a main control unit and a mathematical simulation unit, wherein the main control unit can receive the external or read self point location file and transmit the point location file to the mathematical simulation unit, and the mathematical simulation unit calculates and generates corresponding mathematical simulation data comprising pseudo ranges, speeds, accelerations, jerks and powers of all satellites and transmits the pseudo ranges, speeds, accelerations, jerks and powers to the shipborne satellite signal generation module and the airborne satellite signal generation module.
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| CN202410876348.0A CN118425994A (en) | 2024-07-02 | 2024-07-02 | Shipborne satellite and onboard satellite signal simulation generation system thereof |
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| CN202410876348.0A CN118425994A (en) | 2024-07-02 | 2024-07-02 | Shipborne satellite and onboard satellite signal simulation generation system thereof |
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