阅读说明：本技术 基于卫星通信对抗系统的载波干扰系统、方法及装置 (Carrier interference system, method and device 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载波干扰系统、方法及装置。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；所述系统还包括：载波干扰装置；所述载波干扰装置与处理器信号连接,进行载波干扰处理；所述上位机提供给操作人员下发干扰指令、干扰时刻点、干扰时刻点对应的发射功率和长度至处理器；其通过载波干扰对目标通信进行干扰,具有隐蔽性好和干扰效率高的优点。(The invention belongs to the technical field of satellite communication, and particularly relates to a carrier interference system, a carrier interference method and a carrier interference device based on a satellite communication countermeasure system. 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 further comprises: a carrier jamming device; the carrier interference device is in signal connection with the processor and carries out carrier interference processing; the upper computer provides an operator with an interference instruction, an interference time point and the transmitting power and length corresponding to the interference time point to the processor; the method and the device interfere target communication through carrier interference, and have the advantages of good concealment and high interference efficiency.)

1. A carrier interference system for a satellite-based communication countermeasure system, the system comprising: 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; characterized in that the system further comprises: a carrier jamming device; the carrier interference device is in signal connection with the processor and carries out carrier interference processing; the upper computer provides an operator with an interference instruction, an interference time point and the transmitting power and length corresponding to the interference time point to the processor; the processor controls the operation of the signal processing device and the carrier interference device according to an interference instruction sent by the upper computer, an interference time point and the transmitting power and length corresponding to the interference time point, so as to complete interference; the signal processing device, the step of processing the signal at least comprises: collecting signals; performing analog-to-digital conversion on the signal; acquiring a master station signaling specification and a frame schedule through signal analysis; issuing a frame schedule to a processor; completing frame plan alignment under the control of the processor; the step of the carrier interference device for carrying out carrier interference processing comprises the following steps: adding an interference signal to the carrier signal to obtain a carrier interference signal; the processor uses the carrier interference signal and receives the frame schedule from the signal processing device to complete the user interference.

2. The system of claim 1, wherein the carrier jamming means comprises: the filtering and sampling unit is used for receiving signal demodulation filtering sampling, and comprises the processes of pre-amplifying, quadrature demodulation, low-pass filtering and analog-to-digital conversion of the received signals, so that two paths of orthogonal baseband signals are obtained; s₁And S_Q(ii) a A phase amplitude calculation unit for calculating an initial phase by using the quadrature signalAnd amplitude, the initial phase being:the initial amplitudes are:the phase correction iteration unit is used for performing phase correction iteration operation on the obtained initial phase to obtain a target phase; and the interference signal generating unit generates an interference signal and modulates and superposes the interference signal on the received signal.

3. The system of claim 2, wherein the phase correction iteration unit performs the following steps in a method of performing a phase correction iteration operation on the obtained initial phase to obtain a target phase: the initial phase obtained in the phase amplitude calculation unitDefining an iteration initial phase; plus-minus offset phase: to generate two comparison quantities, in said phaseAdding theta up or down to obtain two paths of signals; respectively substituting the two comparison quantities into a counter and calculating to obtain corresponding power sum 1 and power sum 2, simultaneously feeding back two paths of signals into a received signal, and collecting the power sum near the local oscillation frequency; comparing the power sum 1 with the power sum 2; generating an iteration phase, selecting an iteration direction according to a comparison result, determining a target phase, and performing the next iteration.

4. The system of claim 3, wherein the interfering signal generating unit, the method of generating the interfering signal and modulating the superimposed interfering signal onto the received signal, performs the steps of: two quadrature signals are generated containing target phase and amplitude information:andthe orthogonal signal is subjected to orthogonal modulation after passing through an analog-to-digital converter to obtain an interference signal, and the orthogonal modulation formula is as follows:

5. the system of claim 4, wherein the processor combines the generated interference signal with a frame schedule received from the signal processing device to control the signal processing device to interfere with the target.

6. Method for combating carrier interference of a system based on satellite communication according to one of the claims 1 to 5, characterized in that the method performs the following steps:

step S1: extracting and issuing a frame plan;

step S2: generating an interference signal;

step S3: performing frame plan alignment;

step S4: and carrying out carrier interference.

7. The method of claim 6, 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; and issuing the frame schedule to the processor.

8. The method of claim 7, wherein the step S3: the method for aligning frame plans sequentially executes the following steps: step S3.1: the superframe counter counts circularly according to the superframe period; step S3.2: the time stamp adding subunit records the time point of the current burst in the superframe when the demodulator captures the burst frame header, and simultaneously transmits the recorded value to the time stamp recording subunit; step S3.3: when each superframe period is finished, the superframe counter informs the processor in an interrupt mode; step S3.4: the processor acquires the burst time point recorded by the time stamp adding subunit at regular time according to the received superframe interrupt signal; step S3.5: the processor compares the acquired burst time information with the time information of the frame plan to calculate the deviation time of the superframe counter; step S3.6: the processor sends the deviation time to a superframe counter; step S3.7: the superframe counter corrects the value of the counter according to the deviation time; step S3.8: and (5) looping the step S3.2 to the step S3.7 until the superframe counter is completely compared with the frame planning time information.

9. The method of claim 8, wherein step S2: the method of generating an interfering signal performs the steps of: receiving signal demodulation, filtering and sampling, wherein the demodulation, filtering and sampling comprise the processes of pre-amplification, quadrature demodulation, low-pass filtering and analog-to-digital conversion of the received signals, so that two paths of orthogonal baseband signals are obtained; s₁And S_Q(ii) a Calculating an initial phase and an amplitude by utilizing the orthogonal signals, wherein the initial phase is as follows:

10. A satellite-based communication countermeasure system carrier jamming device based on the method of any of claims 6 to 9, wherein the device is a non-transitory computer-readable storage medium storing computing instructions comprising: a code segment for extracting and issuing the frame plan; a code segment for generating an interference signal; a code segment for performing frame plan alignment; a code segment for performing user interference.