A multi-band satellite measurement and control system and method

Abstract

The present invention discloses a multi-band satellite measurement and control system, including a relay satellite for receiving and forwarding multi-band satellite signals; a ground transmitting station is connected to the relay satellite in communication, a ground receiving station is connected to the relay satellite in communication, a multi-band satellite signal frequency combining unit is connected to the ground transmitting station in communication, and is used to combine multiple single-band satellite signals into a multi-band satellite signal; a multi-band satellite signal frequency decomposition unit is used to decompose the multi-band satellite signal into multiple single-band satellite signals with different frequencies; a satellite signal noise raising unit is used to perform noise raising and encryption on the transmission data of the single-band satellite signal; a satellite signal noise decompression unit is used to perform noise decompression and decryption on the transmission data of the single-band satellite signal; a multi-band noise raising and lowering storage database is used to provide a password string for noise raising and noise decompression in the transmission data of the satellite signal. The present invention improves the confidentiality of the core data information of the satellite signal transmission by performing noise raising and encryption and frequency combining on multiple single-band satellite signals, and ensures that the intercepted satellite signal is difficult to crack.

Description

Technical Field

[0001] The present invention belongs to the field of satellite measurement and control communications, and in particular, relates to a multi-band satellite measurement and control system and method. Background Art

[0002] With the development of satellite microwave communication technology, higher and higher requirements are put forward for the forwarding capability of satellite communication signals. In particular, a very prominent feature of future broadband communication satellite systems is that they will be equipped with a huge number of multi-beam radio frequency antennas. Satellite microwave communication forwarding technology is limited by capacity, rate, electromagnetic interference, etc., and cannot meet actual requirements.

[0003] In the Chinese invention patent with patent number CN201310349986.9, an application method of a satellite-borne S-band relay user terminal system based on a spread spectrum system is disclosed, which includes the following steps: Step 1, according to the satellite measurement and control requirements, determine the spread spectrum system adopted by the measurement and control transponder, and further determine the number of forward measurement and control channels and return measurement and control channels according to the determined spread spectrum system; Step 2, according to the relay satellite orbit and its relay measurement and control channel indicators, design the relay measurement and control link, determine the relay measurement and control antenna beam width and gain requirements for the relay measurement and control link, and select the S receiving antenna and S transmitting antenna with a suitable directional pattern; Step 3, according to the gain design result of the relay measurement and control link in step 2, determine the receiving sensitivity and transmission power of the measurement and control transponder, select a suitable Ka / S antenna, and require the G / T value of the relay measurement and control channel to be and EIRP values ​​meet the communication requirements, and a suitable power amplifier is selected at the same time; Step 4, the satellite program control or relay satellite sends an instruction to open the large gain channel of the power amplifier, and the return telemetry signal is sent to the relay satellite through the S transmitting antenna to establish a return telemetry link. The ground can monitor the Ka / S link establishment process in real time; the Ka / S antenna points to the relay satellite according to the program setting, and establishes the KSA (K wave single address service) and SSA (S band single address service) return links. After the link is established (automatic tracking), the satellite program control or relay satellite sends an instruction to close the large gain channel of the power amplifier and open the small gain channel. The return telemetry signal is sent through the Ka / S antenna; Step 5, define the measurement and control working mode of the satellite-borne S band relay user terminal system based on the spread spectrum system, and the relay satellite works according to the requirements of the working mode when performing measurement and control communication. Real-time monitoring of the user terminal and the relay satellite Ka / S link establishment process improves the emergency measurement and control capability. Beneficial effects have been achieved in reducing satellite configuration, saving satellite resources, and reducing satellite costs.

[0004] The defect of the existing patent is that although it realizes real-time monitoring of the process of establishing the link between the user terminal and the relay satellite Ka / S, and improves the emergency measurement and control capability, once the multi-band satellite signal is intercepted, its core data information is easy to obtain. Summary of the invention

[0005] In view of the problem that once the existing multi-band satellite signals are intercepted, it is easy to obtain their core data information, the present invention provides a multi-band satellite measurement and control system and method.

[0006] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows:

[0007] A multi-band satellite measurement and control system comprises a relay satellite, a ground transmitting station, a ground receiving station, a multi-band satellite signal frequency combining unit, a multi-band satellite signal frequency decoding unit, a satellite signal noise raising unit, a satellite signal noise de-noising unit and a multi-band noise raising and lowering noise storage data unit;

[0008] Relay satellites are used to receive and forward multi-band satellite signals;

[0009] The ground transmitting station is connected to the relay satellite for transmitting multi-band satellite signals to the relay satellite;

[0010] The ground receiving station is connected to the relay satellite for receiving the multi-band satellite signals forwarded by the relay satellite;

[0011] The multi-band satellite signal combining unit is connected to the ground transmitting station for combining a plurality of single-band satellite signals into a multi-band satellite signal and transmitting the signal to the ground transmitting station;

[0012] The multi-band satellite signal de-noising unit is connected to the ground receiving station for decomposing the multi-band satellite signal into a plurality of single-band satellite signals with different frequencies and transmitting the signals to the satellite signal de-noising unit;

[0013] The satellite signal noise enhancement unit is communicatively connected with the multi-band satellite signal frequency combining unit, and is used for performing noise enhancement and encryption on the transmission data of the single-band satellite signal;

[0014] The satellite signal de-noising unit is communicatively connected to the multi-band satellite signal de-frequency unit, and is used for de-noising and de-encrypting the transmission data of the single-band satellite signal;

[0015] The multi-band noise-raising and noise-reducing storage data unit is provided with communication connection lines with the satellite signal noise-raising unit and the satellite signal noise-reducing unit, and is used to provide a password string for the transmission data noise-raising and noise-reducing of the single-band satellite signal.

[0016] Furthermore, the satellite signal noise enhancement unit inserts the password string into the multi-band noise enhancement storage data unit by random insertion, and feeds back the position information of the single-band satellite signal transmission data into which the password string is inserted to the multi-band noise enhancement storage data unit.

[0017] Furthermore, the satellite signal de-noising unit performs de-noising and de-encryption by means of character string interception, matching and searching to obtain the transmission data of the single-band satellite signal during initial uploading.

[0018] Furthermore, when there is only one single-band satellite signal, the single-band satellite signal is spread into multiple single-band satellite signals of different frequencies through a signal amplifier, and then the multiple single-band satellite signals are combined into a multi-band satellite signal and transmitted to the ground transmitting station.

[0019] Furthermore, a second communication link is provided between the multi-band satellite signal frequency combining unit and the multi-band satellite signal frequency decoding unit, and the second communication link is used to transmit the frequency of each segment of the multi-band satellite signal; a third communication link is provided between the satellite signal noise enhancement unit and the satellite signal noise decoding unit, and the third communication link is used to transmit the location information of the multi-band satellite signal transmission data in which the password string is inserted.

[0020] A multi-band satellite measurement and control method comprises the steps of:

[0021] S1. Acquire multiple single-band satellite signals to be transmitted through a ground transmitting station;

[0022] S2, performing noise enhancement and encryption on the transmission data of multiple single-band satellite signals;

[0023] S3, synthesizing the multiple single-band satellite signals after noise enhancement and encryption into a multi-band satellite signal, and feeding it back to the ground transmitting station;

[0024] S4, transmitting multi-band satellite signals to the relay satellite;

[0025] S5, the ground receiving station receives the multi-band satellite signal forwarded by the relay satellite;

[0026] S6, decomposing the multi-band satellite signal into a plurality of single-band satellite signals with different frequencies;

[0027] S7, de-noising and de-encrypting the transmission data of the single-band satellite signal;

[0028] S8, verify whether the transmission data of the single-band satellite signal after de-noising by the ground receiving station is consistent with the transmission data of the sent single-band satellite signal, if they are consistent, output the single-band satellite signal, if not, proceed to step S9;

[0029] S9. Inform the user end that an error occurs in the transmission of the single-band satellite signal.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] By noise-raising, encrypting and combining multiple single-band satellite signals, the confidentiality of core data information transmitted by satellite signals can be improved, ensuring that intercepted satellite signals are difficult to crack. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of the overall framework of a multi-band satellite measurement and control system according to an embodiment of the present invention;

[0033] Figure 2 The present invention is a flowchart of a multi-band satellite measurement and control method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0034] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0035] like Figure 1 As shown, this embodiment provides a multi-band satellite measurement and control system, including a relay satellite, a ground transmitting station, a ground receiving station, a multi-band satellite signal frequency combining unit, a multi-band satellite signal frequency demodulation unit, a satellite signal noise raising unit, a satellite signal noise demodulation unit and a multi-band noise raising and lowering noise storage data unit;

[0036] Relay satellites are used to receive and forward multi-band satellite signals;

[0037] The ground transmitting station is connected to the relay satellite for transmitting multi-band satellite signals to the relay satellite;

[0038] The ground receiving station is connected to the relay satellite for receiving the multi-band satellite signals forwarded by the relay satellite;

[0039] The multi-band satellite signal combining unit is connected to the ground transmitting station for combining a plurality of single-band satellite signals into a multi-band satellite signal and transmitting the signal to the ground transmitting station;

[0040] The multi-band satellite signal de-noising unit is connected to the ground receiving station for decomposing the multi-band satellite signal into a plurality of single-band satellite signals with different frequencies and transmitting the signals to the satellite signal de-noising unit;

[0041] The satellite signal noise enhancement unit is communicatively connected with the multi-band satellite signal frequency combining unit, and is used for performing noise enhancement and encryption on the transmission data of the single-band satellite signal;

[0042] The satellite signal de-noising unit is communicatively connected to the multi-band satellite signal de-frequency unit, and is used for de-noising and de-encrypting the transmission data of the single-band satellite signal;

[0043] The multi-band noise-raising and noise-reducing storage data unit is provided with communication connection lines with the satellite signal noise-raising unit and the satellite signal noise-reducing unit, and is used to provide a password string for the transmission data noise-raising and noise-reducing of the single-band satellite signal.

[0044] The satellite signal noise raising unit inserts the password string into the multi-band noise raising and lowering storage data unit by random insertion method, and feeds back the position information of the single-band satellite signal transmission data into which the password string is inserted to the multi-band noise raising and lowering storage data unit.

[0045] The satellite signal de-noising unit performs de-noising and de-encryption by means of character string interception matching and searching to obtain the transmission data of the single-band satellite signal during initial uploading.

[0046] When there is only one single-band satellite signal, the signal amplifier is used to spread the single-band satellite signal into multiple single-band satellite signals of different frequencies, and then the multiple single-band satellite signals are combined into a multi-band satellite signal and transmitted to the ground transmitting station. This prevents a single single-band satellite signal from being easily intercepted. Even if multiple single-band satellite signals of different frequencies are intercepted, it is difficult to obtain their core data information. The core data information is in a chaotic state, and it is difficult for interceptors to obtain a multi-band satellite signal synthesized from multiple single-band satellite signals.

[0047] A second communication link is provided between the multi-band satellite signal frequency combining unit and the multi-band satellite signal frequency decompression unit, and the second communication link is used to transmit the frequency of each segment of the multi-band satellite signal; it is convenient for the subsequent multi-band satellite signal frequency decomposition unit to decompose the multi-band satellite signal into multiple single-band satellite signals with different frequencies. A third communication link is provided between the satellite signal noise raising unit and the satellite signal noise decompression unit, and the third communication link is used to transmit the location information of the multi-band satellite signal transmission data into which the password string is inserted; it is convenient for the satellite signal noise decompression unit to verify whether the single-band satellite signal after noise decompression is consistent with the single-band satellite signal before being sent by the ground transmitting station. The password string is deleted by transmitting the location information of the multi-band satellite signal transmission data into which the password string is inserted, and it is verified whether the single-band satellite signals are consistent. At the same time, the verification package is a cipher and can only be verified, and the single-end user of the satellite signal noise decompression cannot view it.

[0048] A multi-band satellite measurement and control method comprises the steps of:

[0049] S1. Acquire multiple single-band satellite signals to be transmitted through a ground transmitting station;

[0050] S2, performing noise enhancement and encryption on the transmission data of multiple single-band satellite signals;

[0051] S3, synthesizing the multiple single-band satellite signals after noise enhancement and encryption into a multi-band satellite signal, and feeding it back to the ground transmitting station;

[0052] S4, transmitting multi-band satellite signals to the relay satellite;

[0053] S5, the ground receiving station receives the multi-band satellite signal forwarded by the relay satellite;

[0054] S6, decomposing the multi-band satellite signal into a plurality of single-band satellite signals with different frequencies;

[0055] S7, de-noising and de-encrypting the transmission data of the single-band satellite signal;

[0056] S8, verify whether the transmission data of the single-band satellite signal after de-noising by the ground receiving station is consistent with the transmission data of the sent single-band satellite signal, if they are consistent, output the single-band satellite signal, if not, proceed to step S9;

[0057] S9. Inform the user end that an error occurs in the transmission of the single-band satellite signal.

[0058] Compared with the prior art, the present invention has the following beneficial effects:

[0059] By noise-raising, encrypting and combining multiple single-band satellite signals, the confidentiality of core data information transmitted by satellite signals can be improved, ensuring that intercepted satellite signals are difficult to crack.

[0060] The above is a detailed introduction to a multi-band satellite measurement and control system and method provided by the present application. The description of the specific embodiment is only used to help understand the method and its core idea of ​​the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A multi-band satellite tracking and control system, characterized in that: It includes a relay satellite, a ground transmitting station, a ground receiving station, a multi-band satellite signal frequency combining unit, a multi-band satellite signal frequency demodulation unit, a satellite signal noise raising unit, a satellite signal noise demodulation unit and a multi-band noise raising and lowering noise storage data unit; Relay satellites are used to receive and forward multi-band satellite signals; The ground transmitting station is connected to the relay satellite for transmitting multi-band satellite signals to the relay satellite; The ground receiving station is connected to the relay satellite for receiving the multi-band satellite signals forwarded by the relay satellite; The multi-band satellite signal combining unit is connected to the ground transmitting station for combining a plurality of single-band satellite signals into a multi-band satellite signal and transmitting the signal to the ground transmitting station; The multi-band satellite signal de-noising unit is connected to the ground receiving station for decomposing the multi-band satellite signal into a plurality of single-band satellite signals with different frequencies and transmitting the signals to the satellite signal de-noising unit; The satellite signal noise enhancement unit is communicatively connected with the multi-band satellite signal frequency combining unit, and is used for performing noise enhancement and encryption on the transmission data of the single-band satellite signal; The satellite signal de-noising unit is communicatively connected to the multi-band satellite signal de-frequency unit, and is used for de-noising and de-encrypting the transmission data of the single-band satellite signal; The multi-band noise-raising and noise-reducing storage data unit is provided with communication connection lines with the satellite signal noise-raising unit and the satellite signal noise-reducing unit, and is used to provide a password string for the transmission data noise-raising and noise-reducing of the single-band satellite signal.

2. A multi-band satellite measurement and control system according to claim 1, characterized in that: The satellite signal noise raising unit inserts the password string into the multi-band noise raising and lowering storage data unit by random insertion method, and feeds back the position information of the single-band satellite signal transmission data into which the password string is inserted to the multi-band noise raising and lowering storage data unit.

3. A multi-band satellite measurement and control system according to claim 2, characterized in that: The satellite signal de-noising unit performs de-noising and de-encryption by means of character string interception matching and searching to obtain the transmission data of the single-band satellite signal during initial uploading.

4. A multi-band satellite measurement and control system according to claim 3, characterized in that: When there is only one single-band satellite signal, the single-band satellite signal is spread into multiple single-band satellite signals of different frequencies through a signal amplifier, and then the multiple single-band satellite signals are combined into a multi-band satellite signal and transmitted to the ground transmitting station.

5. A multi-band satellite measurement and control system according to claim 4, characterized in that: A second communication link is provided between the multi-band satellite signal frequency combining unit and the multi-band satellite signal frequency decoding unit, and the second communication link is used to transmit the frequency of each segment of the multi-band satellite signal; a third communication link is provided between the satellite signal noise enhancement unit and the satellite signal noise de-noising unit, and the third communication link is used to transmit the position information of the multi-band satellite signal transmission data into which the password string is inserted.

6. A multi-band satellite measurement and control method, characterized in that: Includes steps: S1. Acquire multiple single-band satellite signals to be transmitted through a ground transmitting station; S2, performing noise enhancement and encryption on the transmission data of multiple single-band satellite signals; S3, synthesizing the multiple single-band satellite signals after noise enhancement and encryption into a multi-band satellite signal, and feeding it back to the ground transmitting station; S4, transmitting multi-band satellite signals to the relay satellite; S5, the ground receiving station receives the multi-band satellite signal forwarded by the relay satellite; S6, decomposing the multi-band satellite signal into a plurality of single-band satellite signals with different frequencies; S7, de-noising and de-encrypting the transmission data of the single-band satellite signal; S8, verify whether the transmission data of the single-band satellite signal after de-noising by the ground receiving station is consistent with the transmission data of the sent single-band satellite signal, if they are consistent, output the single-band satellite signal, if not, proceed to step S9; S9. Inform the user end that an error occurs in the transmission of the single-band satellite signal.

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