阅读说明：本技术 基于卫星通信对抗系统的实时帧同步系统及方法 (Real-time frame synchronization system and method based on satellite communication countermeasure system ) 是由 赵明 樊龙飞 于 2020-04-26 设计创作，主要内容包括：本发明属于卫星通信技术领域,具体涉及基于卫星通信对抗系统的实时帧同步系统及方法。所述系统包括：所述系统包括：信号处理装置、处理器和上位机；所述信号处理器装置信号连接于处理器；所述处理器分别信号连接于信号处理装置和上位机；所述上位机提供给操作人员将接收主站信号的参数下发至处理器；所述处理器,用于将主站信号的参数发送至信号处理装置,同时提取帧计划表格,发送给信号处理装置。其能够在保证超帧周期不变的情况下,实现帧计划的实时变化；同时,本发明还具有适用性广和节省资源的优点。(The invention belongs to the technical field of satellite communication, and particularly relates to a real-time frame synchronization system and a real-time frame synchronization method based on a satellite communication countermeasure system. The system comprises: the system comprises: the device comprises a signal processing device, a processor and an upper computer; the signal processor device is in signal connection with the processor; the processor is respectively in signal connection with the signal processing device and the upper computer; the upper computer provides the parameters for the operator to send the parameters for receiving the master station signals to the processor; and the processor is used for sending the parameters of the master station signals to the signal processing device, extracting the frame plan table and sending the frame plan table to the signal processing device. The method can realize real-time change of the frame plan under the condition of ensuring that the superframe period is not changed; meanwhile, the invention also has the advantages of wide applicability and resource saving.)

1. A real-time frame synchronization system for a satellite communication based countermeasure system, the system comprising: the system comprises: the device comprises a signal processing device, a processor and an upper computer; the signal processor device is in signal connection with the processor; the processor is respectively in signal connection with the signal processing device and the upper computer; the system is characterized in that the upper computer provides the parameters for receiving the master station signals for the operator to send to the processor; the processor is used for sending the parameters of the master station signals to the signal processing device, extracting a frame plan table and sending the frame plan table to the signal processing device; the signal processing device, the step of processing the signal at least comprises: and receiving parameters of a master station signal from a processor and a frame schedule table, performing frame synchronization guidance and decoding guidance, and performing frame synchronization and decoding work after the frame synchronization guidance and the decoding guidance according to the frame schedule table and the NCR time information extracted from the received signal.

2. The system of claim 1, wherein the signal processing means comprises: the device comprises an analog-to-digital converter, a digital down-conversion unit, a frame synchronization unit, a demodulator, a decoder, a DVB receiving unit, an NCR synchronization counter unit, a frame synchronization guiding unit, a timestamp adding unit and a decoding guiding unit; the analog-to-digital converter is connected with the digital down-conversion unit through signals; the digital down-conversion unit is respectively connected with the frame synchronization unit and the analog-to-digital converter through signals; the frame synchronization unit is respectively in signal connection with the demodulator, the digital down-conversion unit, the frame synchronization guiding unit and the timestamp adding unit; the demodulator is respectively connected with the frame synchronization unit, the timestamp adding unit and the decoder through signals; the decoder is respectively connected with the demodulator, the decoding guide unit and the upper computer through signals; the DVB receiving unit is respectively connected with the processor and the NCR synchronous counter unit through signals; the NCR synchronous counter unit is respectively connected with the frame synchronization guiding unit, the timestamp adding unit, the DVB receiving unit and the processor through signals; the frame synchronization guiding unit is respectively connected with the frame synchronization unit, the NCR synchronization counter unit and the processor through signals; the time stamp adding unit is respectively connected with the NCR synchronous counter unit, the frame synchronous unit, the demodulator and the decoding guide unit through signals; the decoding guide unit is respectively connected with the decoder, the timestamp adding unit and the processor through signals; the processor is respectively in signal connection with the DVB receiving unit, the NCR synchronous counter unit, the frame synchronization guiding unit, the decoding guiding unit and the upper computer; and the upper computer is respectively in signal connection with the processor and the decoder.

3. The system of claim 2, wherein the parameters of the primary station signals include at least: unique code, decoding specification, scrambling specification and frame plan specification of the primary station signal.

4. The system of claim 3, wherein the frame synchronization guidance unit indicates the decoding specification of the current burst so that the decoder can decode correctly without traversal.

5. A real-time frame synchronization method based on a satellite communication countermeasure system based on the system of one of claims 1 to 4, characterized in that it performs the following steps:

step S1: extracting and issuing a frame plan;

step S2: guidance for frame planning is performed.

6. The method of claim 5, wherein the step S1: the method for extracting and issuing the frame plan sequentially executes the following steps: the signal processing device collects signals sent by the master station; analyzing the signaling specification of the main station and a frame schedule; the upper computer sends the signal parameters of the receiving master station to the processor; the processor transmits the received signal parameters of the main station to the DVB receiving unit; a demodulator in the signal processing device locks and sends the received data to a processor; the processor analyzes the signaling according to the master station signaling specification extracted by the signal processing device and extracts a frame planning table; the processor sends the extracted frame plan to the frame synchronization guiding unit and the decoding unit in real time.

7. The method of claim 6, wherein the step S2: the method for guiding frame planning sequentially executes the following steps: after receiving the signal, the DVB receiving unit extracts a frame plan table, and the processor issues a frame synchronization parameter corresponding to the whole superframe time information to the frame synchronization guiding unit and issues a whole decoding parameter to the decoding guiding unit according to the received frame plan table; the frame synchronization guiding unit guides the frame synchronization unit to work according to the time information provided by the NCR synchronization counter; the decoding guide unit guides the decoder to work according to the time information provided by the NCR synchronous counter.

8. The method of claim 7, wherein the signal processing means comprises: the device comprises an analog-to-digital converter, a digital down-conversion unit, a frame synchronization unit, a demodulator, a decoder, a DVB receiving unit, an NCR synchronization counter unit, a frame synchronization guiding unit, a timestamp adding unit and a decoding guiding unit; the analog-to-digital converter is connected with the digital down-conversion unit through signals; the digital down-conversion unit is respectively connected with the frame synchronization unit and the analog-to-digital converter through signals; the frame synchronization unit is respectively in signal connection with the demodulator, the digital down-conversion unit, the frame synchronization guiding unit and the timestamp adding unit; the demodulator is respectively connected with the frame synchronization unit, the timestamp adding unit and the decoder through signals; the decoder is respectively connected with the demodulator, the decoding guide unit and the upper computer through signals; the DVB receiving unit is respectively connected with the processor and the NCR synchronous counter unit through signals; the NCR synchronous counter unit is respectively connected with the frame synchronization guiding unit, the timestamp adding unit, the DVB receiving unit and the processor through signals; the frame synchronization guiding unit is respectively connected with the frame synchronization unit, the NCR synchronization counter unit and the processor through signals; the time stamp adding unit is respectively connected with the NCR synchronous counter unit, the frame synchronous unit, the demodulator and the decoding guide unit through signals; the decoding guide unit is respectively connected with the decoder, the timestamp adding unit and the processor through signals; the processor is respectively in signal connection with the DVB receiving unit, the NCR synchronous counter unit, the frame synchronization guiding unit, the decoding guiding unit and the upper computer; and the upper computer is respectively in signal connection with the processor and the decoder.

9. The method of claim 8, wherein the parameters of the primary station signals include at least: unique code, decoding specification, scrambling specification and frame plan specification of the primary station signal.

10. The method of claim 9, wherein the frame synchronization guidance unit indicates a decoding specification of the current burst such that the decoder can correctly decode without traversal.