Beam control system for solving frequency hopping problem of phased-array antenna system

Abstract

The invention discloses a beam control system for solving the frequency hopping problem of a phased-array antenna system, which comprises a main control unit and a wave control unit, beam pointing information and frequency point information of the main control unit and the wave control unit are interacted through a high-speed interface, and LOAD pulse signals of the main control unit and the wave control unit are interacted through the high-speed interface. According to the invention, wave beam switching within 50us is realized, a frequency hopping scene of ten thousand times in one second is satisfied, and the dispersion problem of a phased-array antenna system caused by frequency hopping is solved. And the response of the multifunctional chip is completed within 5100ns when the LOAD pulse signal is received by the wave control unit, so that the integrity of the signal is ensured. When the wave beam switching time is matched with the frequency hopping frequency, the dispersion problem of the phased-array antenna system caused by frequency hopping can be solved. The method is suitable for different frequency hopping times in one second, and has strong expansibility.

Description

Technical Field

[0001] The present invention relates to the technical field of phased array antennas, and in particular to a beam control system for solving the frequency hopping problem of a phased array antenna system. Background Art

[0002] Satellite communication has the advantages of long transmission distance, large coverage and no influence from terrain. The requirements for anti-interference are getting higher and higher. In this regard, the method of hopping frequency tens of thousands of times in 1 second is used to improve the anti-interference performance. However, this method will introduce dispersion problems to the phased array antenna system.

[0003] The dispersion problem of phased array antenna can be solved by adding a delay module, but this will increase the cost, weight and size. How to solve the dispersion problem caused by frequency hopping without affecting the cost, weight and size is a specific problem to be solved by the present invention. Summary of the invention

[0004] The object of the present invention is to provide a beam control system for solving the frequency hopping problem of a phased array antenna system, so as to solve the above technical problems.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions: A beam control system for solving the frequency hopping problem of a phased array antenna system comprises a main control unit and a beam control unit. The beam pointing information and frequency point information of the main control unit and the beam control unit interact through a high-speed interface. Meanwhile, the LOAD pulse signals of the main control unit and the beam control unit interact through the high-speed interface.

[0006] As a further solution of the present invention, the beam pointing information and frequency information, the frequency information has a higher priority than the beam pointing information, the beam control unit receives a beam pointing information control instruction once every 1ms, and receives a frequency information control instruction once every 50us, when calculating each channel control word within this 1ms, the beam pointing information remains unchanged, and the frequency information changes according to the received frequency information control instruction.

[0007] As a further solution of the present invention, the high-speed interface adopts synchronous RS422, LVDS, SRIO and other interfaces.

[0008] As a further solution of the present invention, a LOAD pulse signal is used to synchronize the main control unit, the wave control unit and the back-end signal demodulation unit, so that the signal integrity is guaranteed.

[0009] As a further solution of the present invention, the main control unit starts sending beam pointing information control instructions and frequency information control instructions to the wave control unit, and completes sending control words to each channel of the multi-function chip within 50us.

[0010] As a further solution of the present invention, the LOAD pulse signal may adopt a LOAD level, and the pulse width may be selected to be 50ns.

[0011] Compared with the prior art, the present invention has the following advantages: the invented beam control system solves the frequency hopping problem of the phased array antenna system, realizes beam switching within 50us, meets the frequency hopping scenario of 10,000 times per second, and solves the dispersion problem of the phased array antenna system introduced by frequency hopping. The multifunctional chip response is completed within 5100ns after the beam control unit receives the LOAD pulse signal, ensuring the integrity of the signal.

[0012] When the beam switching time matches the frequency hopping frequency, the dispersion problem of the phased array antenna system introduced by frequency hopping can be solved. It is applicable to different frequency hopping times within 1 second and has strong scalability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a block diagram of the beam control system of the present invention. DETAILED DESCRIPTION

[0014] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0015] A beam control system for solving the frequency hopping problem of a phased array antenna system comprises a main control unit 1 and a beam control unit 2. The beam pointing information 3 and frequency information 4 of the main control unit 1 and the beam control unit 2 interact via a high-speed interface. Meanwhile, the LOAD pulse signal 5 of the main control unit 1 and the beam control unit 2 interact via a high-speed interface.

[0016] The beam pointing information 3 and frequency information 4, frequency information 4 has a higher priority than beam pointing information 3. The beam control unit 2 receives a control instruction of the beam pointing information 3 once every 1ms and a control instruction of the frequency information 4 once every 50us. When calculating each channel control word within this 1ms, the beam pointing information 3 remains unchanged, and the frequency information 4 changes according to the received frequency information control instruction.

[0017] The high-speed interface adopts synchronous RS422, LVDS, SRIO and other interfaces.

[0018] The LOAD pulse signal 5 is used to synchronize the main control unit 1, the wave control unit 2 and the back-end signal demodulation unit, so that the signal integrity is guaranteed.

[0019] After receiving the beam pointing information 3 and frequency information 4 sent by the main control unit 1, the beam control unit 2 immediately starts calculating the control words of each channel, and sends the data directly to the multi-function chip after each calculation of the control words of each channel.

[0020] The main control unit 1 starts with the beam pointing information 3 control instruction and the frequency information 4 control instruction sent to the beam control unit 2, and completes sending control words to each channel of the multi-function chip within 50us. The LOAD pulse signal 5 can adopt the LOAD level, and the pulse width can be selected as 50ns.

[0021] After receiving the LOAD pulse signal 5 through the high-speed interface, the beam control unit 2 completes the chip response within 100ns, realizes beam switching, ensures signal integrity, and solves the dispersion problem introduced by frequency hopping.

[0022] The above is a preferred embodiment of the present invention. For ordinary technicians in this field, according to the teachings of the present invention, without departing from the principles and spirit of the present invention, changes, modifications, substitutions and variations made to the implementation methods are still within the scope of protection of the present invention.

Claims

1. A beam control system for solving the frequency hopping problem of a phased array antenna system, characterized in that: It comprises a main control unit (1) and a beam control unit (2), wherein beam pointing information (3) and frequency point information (4) of the main control unit (1) and the beam control unit (2) interact via a high-speed interface, and at the same time, LOAD pulse signals (5) of the main control unit (1) and the beam control unit (2) interact via the high-speed interface.

2. A beam control system for solving the frequency hopping problem of a phased array antenna system as claimed in claim 1, characterized in that: The beam pointing information (3) and the frequency information (4), the frequency information (4) has a higher priority than the beam pointing information (3), the beam control unit (2) receives a beam pointing information (3) control instruction once every 1 ms, and receives a frequency information (4) control instruction once every 50 us, and when calculating each channel control word within this 1 ms, the beam pointing information (3) remains unchanged, and the frequency information (4) changes according to the received frequency information control instruction.

3. A beam control system for solving the frequency hopping problem of a phased array antenna system as claimed in claim 1, characterized in that: The high-speed interface adopts synchronous RS422, LVDS, SRIO and other interfaces.

4. A beam control system for solving the frequency hopping problem of a phased array antenna system as claimed in claim 1, characterized in that: The LOAD pulse signal (5) is used to synchronize the main control unit (1), the wave control unit (2) and the back-end signal demodulation unit, thereby ensuring signal integrity.

5. A beam control system for solving the frequency hopping problem of a phased array antenna system as claimed in claim 1, characterized in that: The main control unit (1) starts sending the beam pointing information (3) control instruction and the frequency point information (4) control instruction to the beam control unit (2), and completes sending the control word to each channel of the multi-function chip within 50us.

6. A beam control system for solving the frequency hopping problem of a phased array antenna system as claimed in claim 1, characterized in that: The LOAD pulse signal (5) may adopt a LOAD level, and the pulse width may be selected to be 50ns.

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