Transmitting power self-adaption method and device for satellite communication countermeasure system

Abstract

The invention relates to the technical field of satellite communication, in particular to a transmitting power self-adaption method and device for a satellite communication countermeasure system, and the self-adaption method comprises the following steps: receiving a target carrier signal; estimating based on the target carrier signal to obtain a first receiving signal-to-noise ratio; transmitting a measurement signal and recording first transmitting power; estimating a second receiving signal-to-noise ratio based on the measurement signal, and obtaining a relationship between the first transmitting power and the second receiving signal-to-noise ratio; correcting the relationship between the first transmitting power and the second receiving signal-to-noise ratio; calculating to obtain second transmitting power of the interference signal; in the transmitting process, the first receiving signal-to-noise ratio is continuously estimated, the relation between the first transmitting power and the second receiving signal-to-noise ratio is updated, and when the first receiving signal-to-noise ratio changes, the transmitting power is changed by adjusting the gain adjustment amount, so that transmitting power self-adaption is achieved. The invention at least solves the problem of how to set reasonable power and adaptively adjust transmitting power of the reconnaissance station in the prior art.

Description

Technical Field

[0001] The present invention relates to the field of satellite communication technology, and in particular to a transmission power adaptation method and device for a satellite communication countermeasure system. Background Art

[0002] With the development of human society and the progress of science and technology, satellite communication has become the most popular technology in the field of communication today, and has been integrated into all aspects of people's daily life. The importance of satellite communication is not only reflected in ordinary communication transmission, but also has a profound impact on national defense, military and social development.

[0003] Satellite communication systems have strict requirements on the signal transmission power of ground stations to ensure that the signals sent by each ground station are within the reasonable receiving power or receiving signal-to-noise ratio range when they reach the opposite station after being forwarded by the satellite. In the satellite communication countermeasure system of the prior art, the reconnaissance station will superimpose a custom signal on the signal transmitted by the signal sending station to interfere with or deceive the signal receiving station. This requires the reconnaissance station to set a reasonable power, which must ensure that the transmitted signal is greater than the target signal power, can suppress the target signal, or be correctly received by the signal receiving station; but it cannot be too large to avoid wasting power or exceeding the receiving power threshold of the signal receiving station, causing reception distortion. Therefore, there is currently no effective solution to how to set a reasonable power.

[0004] In addition, the signal transmission station will dynamically adjust the transmission power according to the changes in the satellite transmission link conditions, which requires the reconnaissance station to also adaptively adjust the transmission power. There is currently no effective solution for how to adaptively adjust. Summary of the invention

[0005] In view of this, the purpose of the present invention is to provide a method and device for adaptive transmission power of a satellite communication countermeasure system, so as to at least solve the problem of how to set a reasonable power and adaptively adjust the transmission power of a reconnaissance station in the prior art.

[0006] The present invention solves the above technical problems by the following technical means:

[0007] According to a first aspect of an embodiment of the present invention, a transmission power adaptation method for a satellite communication countermeasure system is provided, wherein the satellite communication countermeasure system comprises a satellite, a reconnaissance station, a first ground station, and a second ground station, wherein the adaptation method is used in the reconnaissance station, and the adaptation method comprises the following steps:

[0008] receiving a target carrier signal, wherein the target carrier signal is sent by a first ground station and forwarded by a satellite;

[0009] Obtaining a first received signal-to-noise ratio based on the target carrier signal estimation;

[0010] Transmitting a measurement signal and recording a first transmission power;

[0011] estimating a second received signal-to-noise ratio based on the measurement signal, and obtaining a relationship between the first transmit power and the second received signal-to-noise ratio;

[0012] Correcting the relationship between the first transmission power and the second receiving signal-to-noise ratio according to the target carrier symbol rate and the measured carrier symbol rate;

[0013] The second transmit power of the interference signal is calculated according to the relationship between the corrected first transmit power and the second received signal-to-noise ratio;

[0014] During the transmission process, the first receiving signal-to-noise ratio is continuously estimated, and the relationship between the first transmitting power and the second receiving signal-to-noise ratio is updated. When the first receiving signal-to-noise ratio changes, the transmitting power is changed by adjusting the gain adjustment amount to achieve transmission power adaptation.

[0015] In combination with the first aspect, in some implementations, obtaining a first received signal-to-noise ratio based on the target carrier signal estimation includes:

[0016] The received target carrier signal is amplified, filtered, AD converted, DDC, and digitally interpreted in sequence;

[0017] Estimate the first receiving signal-to-noise ratio based on the DDC data and the interpreted data And record the target carrier symbol rate SR G .

[0018] In combination with the first aspect, in some implementations, transmitting the measurement signal and recording the first transmission power includes:

[0019] Configure the measurement signal transmission and reception parameters, and record the measurement carrier symbol rate SR M and the first transmission power P M ;

[0020] After the transmission data of the measurement signal is encoded, modulated, digitally gain controlled, DUC, DA converted, amplified, and filtered in sequence, the measurement signal is transmitted to the satellite and the first transmission power P is recorded. M .

[0021] In combination with the first aspect, in some implementations, estimating the second received signal-to-noise ratio based on the measurement signal and obtaining a relationship between the first transmit power and the second received signal-to-noise ratio includes:

[0022] Receiving a downlink signal about a measurement signal forwarded by a satellite;

[0023] The received downlink signal is amplified, filtered, AD converted, DDC, and digitally decoded in sequence, and the second receiving signal-to-noise ratio is estimated.

[0024] Record the relationship between the first transmit power and the second receive signal-to-noise ratio:

[0025] In combination with the first aspect, in some implementations, the relationship between the first transmit power and the second receive signal-to-noise ratio is corrected according to the target carrier symbol rate and the measured carrier symbol rate:

[0026] In combination with the first aspect, in some implementations, the second transmit power of the interference signal calculated according to the relationship between the corrected first transmit power and the second received signal-to-noise ratio is: Where X is the gain adjustment amount.

[0027] The transmission power adaptive method for a satellite communication countermeasure system of the present invention continuously estimates the received signal-to-noise ratio of a target signal during signal transmission, and continuously updates the relationship between the transmission power of a measured signal and the received signal-to-noise ratio of the measured signal, so that when the received signal-to-noise ratio of the target signal changes, the transmission power can be changed by adjusting the gain adjustment amount, and the transmission power can be dynamically adjusted to achieve the purpose of adaptively adjusting the transmission power of a reconnaissance station and avoid signal reception distortion.

[0028] According to a second aspect of an embodiment of the present invention, a transmission power adaptation device for a satellite communication countermeasure system is also provided, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the steps of the transmission power adaptation method for a satellite communication countermeasure system as described in the first aspect above are implemented.

[0029] According to a third aspect of an embodiment of the present invention, a computer-readable storage medium is also provided, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the transmission power adaptation method for a satellite communication countermeasure system as described in the first aspect above are implemented.

[0030] It can be understood that the beneficial effects of the second and third aspects mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0032] Figure 1 The process of the transmission power adaptive method for the satellite communication countermeasure system of the present invention is Figure 1 ;

[0033] Figure 2 It is a schematic diagram of signal trends of a transmission power adaptive method for a satellite communication countermeasure system of the present invention;

[0034] Figure 3 The process of the transmission power adaptive method for the satellite communication countermeasure system of the present invention is Figure 2 ;

[0035] Figure 4 It is an application scenario diagram of the method of the present invention. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0037] The terms "first" and "second" in the specification and claims herein are used to distinguish different objects rather than to describe a specific order of objects. In the description of the embodiments of the present application, unless otherwise specified, the meaning of "multiple" refers to two or more, for example, multiple processing units refer to two or more processing units, etc., multiple elements refer to two or more elements, etc.

[0038] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0039] Before explaining the embodiment of the present invention in detail, the system architecture and application scenarios of the embodiment of the present invention are briefly introduced. Figure 4 The satellite communication countermeasure system of the present invention is composed of multiple ground stations (including a reconnaissance station and multiple small stations). The reconnaissance station and the small stations can communicate with each other and communicate through satellite forwarding. The reconnaissance station is within the satellite beam range and can receive signals transmitted by the small stations forwarded by the satellite. At the same time, it can also transmit signals to the satellite, and reach the small stations after being forwarded by the satellite.

[0040] Please refer to Figure 1According to one aspect of an embodiment of the present invention, a transmission power adaptation method for a satellite communication countermeasure system is provided. The satellite communication countermeasure system includes a satellite, a reconnaissance station, a first ground station, and a second ground station. The adaptation method is used in the reconnaissance station. The adaptation method includes the following steps:

[0041] Step 100, receiving a target carrier signal, the target carrier signal is sent by a first ground station and forwarded by a satellite;

[0042] Step 200: Obtain a first received signal-to-noise ratio based on the target carrier signal estimation And record the target carrier symbol rate SR G ;

[0043] Step 300: transmit a measurement signal and record the first transmission power P M ;

[0044] Step 400, estimating a second received signal-to-noise ratio based on the measurement signal, and obtaining a relationship between the first transmit power and the second received signal-to-noise ratio:

[0045] Step 500, correcting the relationship between the first transmit power and the second receive signal-to-noise ratio according to the target carrier symbol rate and the measured carrier symbol rate:

[0046] Step 600: Calculate the second transmit power of the interference signal according to the relationship between the corrected first transmit power and the second received signal-to-noise ratio: Where X is the gain adjustment amount;

[0047] Step 700, during the transmission process, the first receiving signal-to-noise ratio is continuously estimated, and the relationship between the first transmitting power and the second receiving signal-to-noise ratio is updated. When the first receiving signal-to-noise ratio changes, the transmitting power is changed by adjusting the gain adjustment amount to achieve transmission power adaptation.

[0048] Through the above technical solution, during the signal transmission process, the received signal-to-noise ratio of the target signal is continuously estimated, and the relationship between the transmission power of the measurement signal and the received signal-to-noise ratio of the measurement signal is continuously updated, so that when the received signal-to-noise ratio of the target signal changes, the transmission power can be changed by adjusting the gain adjustment amount, and the transmission power can be dynamically adjusted to achieve the purpose of adaptively adjusting the transmission power of the reconnaissance station and avoid signal reception distortion.

[0049] In an optional embodiment, obtaining a first received signal-to-noise ratio based on the target carrier signal estimation includes:

[0050] Step 210, amplifying, filtering, AD conversion, DDC, and digital decoding the received target carrier signal in sequence;

[0051] Step 220: estimating a first receiving signal-to-noise ratio based on the DDC data and the decoded data And record the target carrier symbol rate SR G .

[0052] In an optional embodiment, transmitting a measurement signal and recording a first transmission power includes:

[0053] Step 310: configure the measurement signal transmission and reception parameters, and record the measurement carrier symbol rate SR M and the first transmission power P M ;

[0054] Step 320: After encoding, modulating, digital gain controlling, DUC, DA conversion, amplifying, and filtering the transmission data of the measurement signal, the measurement signal is transmitted to the satellite, and the first transmission power P is recorded. M .

[0055] In an optional embodiment, estimating the second received signal-to-noise ratio based on the measurement signal, and obtaining a relationship between the first transmit power and the second received signal-to-noise ratio includes:

[0056] Step 410, receiving a downlink signal about a measurement signal forwarded by a satellite;

[0057] Step 420, amplify, filter, AD convert, DDC, digitally decode the received downlink signal in sequence, and estimate the second received signal-to-noise ratio

[0058] Step 450, recording the relationship between the first transmit power and the second receive signal-to-noise ratio:

[0059] Please refer to Figure 2 The working principle of the transmission power adaptive method for the satellite communication countermeasure system of the present invention is as follows:

[0060] In the satellite communication countermeasure system, when the reconnaissance station receives the signal forwarded by the satellite from each ground station of the target system, it estimates the signal-to-noise ratio of the ground station signal reception. In addition, when the reconnaissance station sends a measurement signal, it records the transmission power P M , and estimate the received signal-to-noise ratio of the measured signal Get the relationship between transmit power and receive signal-to-noise ratio Assuming that the signal-to-noise ratio is in dB, and the symbol rate of the ground station signal and the measured signal are the same, then using the above relationship, the transmit power can be calculated as The interference signal can cause the signal-to-noise ratio of the signal received by the ground station to be approximately 0. GOn this basis, adjusting the transmission gain can flexibly control the signal reception quality of the ground station receiver. For example, when interfering with the conventional modulation signal, increasing the gain by 6dB can cause the ground station receiver to fail to receive the signal.

[0061] In the above method description, it is assumed that the symbol rate of the target signal sent by the ground station is the same as that of the measurement signal. In actual situations, the symbol rates may not be the same. G , the measured signal carrier symbol rate is SR M Then the corresponding relationship between the signal transmission power and the received signal-to-noise ratio is becomes The corresponding transmission power Where X is the gain adjustment amount.

[0062] Please refer to Figure 3 , the following will describe in detail the various steps of the transmit power adaptation method for the satellite communication countermeasure system, as follows:

[0063] The reconnaissance station is equipped with a master controller, which is used to configure the measurement signal transmission and reception parameters and record the measurement carrier symbol rate SR. M and the first transmission power P M , after the transmission data of the measurement signal is encoded, modulated, digitally gain controlled, DUC (digital up converter), DA conversion (analog-to-digital conversion), amplified, and filtered in sequence, the measurement signal is transmitted to the satellite, and the first transmission power P is recorded M The main controller in the reconnaissance station receives the downlink signal of the measurement signal forwarded by the satellite, amplifies, filters, performs AD conversion (analog-to-digital conversion), DDC (direct digital controller), digital interpretation processing on the received downlink signal in sequence, and estimates the second receiving signal-to-noise ratio Record the relationship between the first transmit power and the second receive signal-to-noise ratio:

[0064] The main controller in the reconnaissance station configures the target carrier signal receiving parameters, and performs amplification, filtering, AD conversion, DDC, and digital interpretation on the received target carrier signal in sequence, and estimates the first receiving signal-to-noise ratio based on the DDC data and the interpreted data. And record the target carrier symbol rate SR G .

[0065] According to the target carrier symbol rate and the measured carrier symbol rate, the relationship between the first transmission power and the second receiving signal-to-noise ratio is corrected as follows: The second transmit power of the interference signal is calculated based on the relationship between the corrected first transmit power and the second received signal-to-noise ratio: Where X is the gain adjustment amount. During the signal transmission process, the main controller in the reconnaissance station continuously estimates the target signal receiving signal-to-noise ratio. And update the relationship between the first transmission power and the second receiving signal-to-noise ratio. When the gain adjustment value X is adjusted, the transmit power is changed, thereby achieving transmit power adaptation.

[0066] An embodiment of the present invention provides a schematic diagram of a transmit power adaptive device for satellite communication confrontation. The transmit power adaptive device for satellite communication confrontation of the embodiment includes: a processor, a memory, and a computer program stored in the memory and executable on the processor, such as a transmit power adaptive program for satellite communication confrontation. When the processor executes the computer program, the steps in the above-mentioned transmit power adaptive method embodiments for satellite communication confrontation are implemented, such as Figure 1 or Figure 3 Alternatively, when the processor executes the computer program, the functions of each module / unit in the above-mentioned transmission power adaptive device for satellite communication confrontation are realized, for example:

[0067] Exemplarily, the computer program may be divided into one or more modules / units, one or more modules / units are stored in a memory and executed by a processor to complete the present invention. The one or more modules / units may be a series of computer program instruction segments capable of completing specific functions, and the instruction segments are used to describe the execution process of the computer program in a transmission power adaptive device for satellite communication confrontation. For example, the computer program may be divided into a signal receiving module, a first estimation module, a signal sending module, a second estimation module, a correction module, a calculation module, and a transmission power adjustment module. The specific functions of each module are as follows:

[0068] A signal receiving module, used for receiving a target carrier signal, the target carrier signal is sent by the first ground station and forwarded by the satellite;

[0069] A first estimation module, configured to obtain a first received signal-to-noise ratio based on a target carrier signal estimation;

[0070] A signal sending module, used for transmitting a measurement signal and recording a first transmission power;

[0071] A second estimation module, used for estimating a second received signal-to-noise ratio based on the measurement signal, and obtaining a relationship between the first transmit power and the second received signal-to-noise ratio;

[0072] A correction module, used to correct the relationship between the first transmission power and the second receiving signal-to-noise ratio according to the target carrier symbol rate and the measured carrier symbol rate;

[0073] A calculation module, used for calculating the second transmission power of the interference signal according to the relationship between the corrected first transmission power and the second received signal-to-noise ratio;

[0074] The transmission power adjustment module is used to continuously estimate the first receiving signal-to-noise ratio during the transmission process, and update the relationship between the first transmission power and the second receiving signal-to-noise ratio. When the first receiving signal-to-noise ratio changes, the transmission power is changed by adjusting the gain adjustment amount to achieve transmission power adaptation.

[0075] The processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor, etc. The processor is the control center of the transmission power adaptive device for satellite communication confrontation, and uses various interfaces and lines to connect various parts of the transmission power adaptive device for satellite communication confrontation.

[0076] The memory can be used to store computer programs and / or modules. The processor realizes various functions of the transmission power adaptive device for satellite communication confrontation by running or executing the computer programs and / or modules stored in the memory and calling the data stored in the memory. The memory can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area can store data created according to the use of the mobile phone (such as audio data, a phone book, etc.), etc. In addition, the memory can include a high-speed random access memory, and can also include a non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a smart memory card, a secure digital card, a flash memory card, at least one disk storage device, a flash memory device or other non-volatile solid-state storage device.

[0077] If the module / unit integrated in the transmission power adaptive device for satellite communication confrontation is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present invention implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing related hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by a processor, the steps of each of the above-mentioned method embodiments can be implemented.

[0078] The computer program includes computer program code, which may be in source code form, object code form, executable file or some intermediate form, etc. Computer readable media may include: any entity or device capable of carrying computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium, etc.

[0079] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should be included in the scope of the claims of the present invention. The techniques, shapes, and structural parts not described in detail in the present invention are all known technologies.

Claims

1. A method for transmitting power adaptation for a satellite communication countermeasure system, characterized in that: The satellite communication countermeasure system comprises a satellite, a reconnaissance station, a first ground station and a second ground station. The adaptive method is used in the reconnaissance station. The adaptive method comprises the following steps: receiving a target carrier signal, wherein the target carrier signal is sent by a first ground station and forwarded by a satellite; Obtaining a first received signal-to-noise ratio based on the target carrier signal estimation; Transmitting a measurement signal and recording a first transmission power; estimating a second received signal-to-noise ratio based on the measurement signal, and obtaining a relationship between the first transmit power and the second received signal-to-noise ratio; Correcting the relationship between the first transmission power and the second receiving signal-to-noise ratio according to the target carrier symbol rate and the measured carrier symbol rate; The second transmit power of the interference signal is calculated according to the relationship between the corrected first transmit power and the second received signal-to-noise ratio; During the transmission process, the first receiving signal-to-noise ratio is continuously estimated, and the relationship between the first transmitting power and the second receiving signal-to-noise ratio is updated. When the first receiving signal-to-noise ratio changes, the transmitting power is changed by adjusting the gain adjustment amount to achieve transmission power adaptation.

2. The transmission power adaptive method for a satellite communication countermeasure system according to claim 1, characterized in that: The estimating and obtaining a first received signal-to-noise ratio based on the target carrier signal includes: The received target carrier signal is amplified, filtered, AD converted, DDC, and digitally interpreted in sequence; Estimate the first receiving signal-to-noise ratio based on the DDC data and the interpreted data And record the target carrier symbol rate SR G .

3. The transmission power adaptive method for a satellite communication countermeasure system according to claim 2, characterized in that: The transmitting measurement signal and recording the first transmitting power includes: Configure the measurement signal transmission and reception parameters, and record the measurement carrier symbol rate SR M and the first transmission power P M ; After the transmission data of the measurement signal is encoded, modulated, digitally gain controlled, DUC, DA converted, amplified, and filtered in sequence, the measurement signal is transmitted to the satellite and the first transmission power P is recorded. M .

4. The transmission power adaptive method for a satellite communication countermeasure system according to claim 3, characterized in that: The estimating the second received signal-to-noise ratio based on the measurement signal and obtaining the relationship between the first transmit power and the second received signal-to-noise ratio includes: Receiving a downlink signal about a measurement signal forwarded by a satellite; The received downlink signal is amplified, filtered, AD converted, DDC, and digitally decoded in sequence, and the second receiving signal-to-noise ratio is estimated. Record the relationship between the first transmit power and the second receive signal-to-noise ratio:

5. The transmission power adaptive method for a satellite communication countermeasure system according to claim 4, characterized in that: The relationship between the first transmission power and the second receiving signal-to-noise ratio is corrected according to the target carrier symbol rate and the measured carrier symbol rate:

6. The transmission power adaptive method for a satellite communication countermeasure system according to claim 5, characterized in that: The second transmit power of the interference signal calculated according to the relationship between the corrected first transmit power and the second received signal-to-noise ratio is: Where s is the gain adjustment amount.

7. A transmission power adaptive device for a satellite communication countermeasure system, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 6 are implemented.

8. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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