A digital TR component phased array radar optical synchronization control network system

Abstract

The present application relates to a kind of digital TR component phased array radar optical synchronization control network systems, including optical synchronization control network, determine the number of high-frequency box is m and the number of digital TR component installed in it is n;Determine the minimum sensitivity c of the optical power input of each digital TR component, according to m set the first stage optical power divider is a division X (X=2 a ) optical power divider, 2 a ≥m, according to n selects the second stage optical power divider is a division Y (Y=2 b ) optical power divider, 2 b ≥n;Optical synchronization control network is composed of optical amplifier, first stage optical power divider, second stage optical power divider, three-way optical link loss is z1, z2, z3 respectively;Determine the output optical power M of optical amplifier must have the following relationship: M≥2*(a+b)+c+(z1+z2+z3).Constitute conciseness, synchronization consistency is good, control signal transmission is efficient and stable, anti-interference ability is strong, cost is low.Solve the problem that the existing composition synchronization control information transmission network must use a large number of equipment structure, work reliability and anti-interference ability is weak, cost is high.

Description

Technical Field

[0001] This invention relates to an optical synchronization control network system for a digital TR component phased array radar, belonging to the field of synchronization control and communication technology. Background Technology

[0002] As a core component of the front-end of next-generation digital phased array radar, the design of digital TR modules is crucial for their synchronization consistency and efficient, high-speed control signal transmission. Currently, the synchronization and control communication networks of phased array radars, primarily based on analog TR modules, are connected and transmitted via RS422 interfaces. Because multiple modules require multiple interface connections, multiple levels of FPGA-based control boards are typically used for RS422 interface extension and relay links, resulting in a complex transmission network. Furthermore, the large number of devices reduces reliability and is no longer suitable for the development and application of next-generation digital phased array radar. Given the development, characteristics, and widespread adoption of optoelectronic technology, it is essential to develop a digital TR module phased array radar optical synchronization control network system that features a simple structure, strong synchronization consistency, efficient and stable control signal transmission, and effectively reduced costs. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of the prior art by providing an optical synchronization control network system for a digital TR module phased array radar. This system utilizes optical amplifiers and passive optical power dividers to form the optical synchronization control network, reducing the number of components and effectively lowering costs. By employing all-optical signals for the transmission of synchronization control information, the synchronization control communication network becomes simpler, more reliable, and more resistant to interference. Furthermore, the optical interface used for optical communication is compatible with any optical interface of common standards such as FC and LC. The optical synchronization control network system for the digital TR module phased array radar is simple in structure, exhibits strong synchronization consistency, and provides efficient and stable control signal transmission, making it fully adaptable to the development and application of next-generation digital phased array radars.

[0004] The technical solution of this invention: An optical synchronization control network system for a digital TR module phased array radar includes an optical synchronization control network, a main control subsystem, multiple high-frequency boxes, multiple digital TR modules, FC optical connectors, and FC-FC optical fiber lines. The input end of the optical synchronization control network is connected to the main control subsystem, and the output end of the optical synchronization control network is directly connected to the digital TR modules installed in the high-frequency boxes. The optical synchronization control network system of this digital TR module phased array radar receives the synchronization control optical signal sent by the main control subsystem. The optical signal is first amplified by an optical amplifier, and then distributed via a two-stage passive optical power divider network to each independent digital TR module. This ultimately achieves synchronization and simultaneous control of the detection timing of all digital TR modules on the array. Utilizing the splitting characteristics of optical signals, the system employs all-optical signals for the transmission of synchronization control information, resulting in a simpler, more reliable, and more interference-resistant synchronization control communication network. The use of simple passive optical power dividers significantly reduces equipment costs, and the optical interface used for optical communication can be expanded to any optical interface of common standards such as FC and LC.

[0005] Based on the number and installation method of the digital TR components in the array, the selection of the two-stage optical power divider equipment is determined. At the same time, based on the input requirements and optical line loss of the digital TR components, the output of the optical amplifier is determined, and the equipment selection of the optical amplifier is confirmed. Finally, the main equipment components of the array synchronization control optical network, as well as the structure and connection method of the array synchronization control optical network, are designed.

[0006] 1) Determine the number of high-frequency boxes used to install digital TR components in the phased array radar array of the digital TR components as m and the number of digital TR components installed in each high-frequency box as n; 2) Determine the minimum optical power input sensitivity of each digital TR component as c, in dBm; 3) Design a two-stage optical power divider connected in series. Based on the number of high-frequency boxes m, set the first-stage optical power divider as one divider X (X=2). a ) Optical power splitter, 2 a ≥m, based on the number n of digital TR components, select the second-stage optical power divider as one Y (Y=2). b ) Optical power splitter, 2 b ≥n; 4) The optical synchronization control network consists of an optical amplifier, a first-stage optical power divider, and a second-stage optical power divider. The optical amplifier connects to the first-stage optical power divider, the first-stage optical power divider connects to the second-stage optical power divider, and the second-stage optical power divider connects to a certain digital TR component, forming three optical links. The losses of each optical link are z1, z2, and z3, respectively. 5) Based on 1)-4), the output optical power M of the selected optical amplifier must meet the following relationship: M≥2*(a+b)+c+(z1+z2+z3); 6) The X (X=2°) optical power splitter is connected to the optical amplifier via two FC optical connectors and three FC-FC optical fiber lines. The insertion loss of the X (X=2°) optical power splitter is 1dBm. The X (X=2") optical power splitter and the Y (Y=2°) optical power splitter are also connected via two FC optical connectors and three FC-FC optical fiber lines. The insertion loss of the Y (Y=2") optical power splitter is 1dBm. The Y (Y=2") optical power splitter is installed in the high-frequency box and is connected to the digital TR component without loss via one FC-FC optical fiber line. 7) The FC optical connector and FC-FC optical fiber mentioned above may be replaced with other general-purpose optical connectors and optical cables that are sandproof, dustproof, waterproof, and salt sprayproof, depending on the actual usage environment requirements of the equipment. These include: J599 series and WBGLFKS series optical connectors and optical fibers.

[0007] The advantages of this invention compared to the prior art are: A digital TR (Transmission Transmission) phased array radar optical synchronization control network system is disclosed. This system comprises an optical amplifier and a two-stage passive optical power divider, utilizing all-optical signals for synchronization control information transmission. This results in a simple network structure, excellent synchronization consistency, efficient and stable control signal transmission, strong anti-interference capabilities, and significantly reduced costs. It fully meets the development requirements and application needs of next-generation digital phased array radars. This system solves the problems of existing synchronization control information transmission networks, which require numerous devices, have complex structures, severely reduce reliability and anti-interference capabilities, and are prohibitively expensive. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the overall structure of the optical synchronization control network system of a digital TR component phased array radar according to the present invention; Figure 2 This is a schematic diagram illustrating the implementation of the optical synchronization control network system for a digital TR component phased array radar according to the present invention. Detailed Implementation

[0009] The following detailed description, in conjunction with the accompanying drawings, further illustrates the specific implementation of the optical synchronization control network system for a digital TR component phased array radar of this invention (see attached drawings). Figure 1-2 ): (See) Figure 1 ), Figure 1 This is a schematic diagram of the overall structure of the optical synchronization control network system for a digital TR component phased array radar according to the present invention. Specifically, it shows the connection relationship between the three-level optical links within the optical synchronization control network; and the cascade relationship between the optical synchronization control network and the main control subsystem, the high-frequency box, and the digital TR components installed in the high-frequency box. The optical power divider used is a passive optical power divider, consisting of a single-stage optical amplifier and a two-stage optical power divider.

[0010] Specifically: an optical amplifier with an output power of M is connected to the first-stage optical power divider via an optical cable, which is also connected to an X-ray power divider, where X=2. a , a≥m, where m is the number of high-frequency boxes with digital TR components installed; the loss of the optical link formed by the optical amplifier and the first-stage optical power divider is z1.

[0011] One X-ray power divider is connected to the second-stage optical power divider via optical fiber, which is also connected to the one Y-ray power divider, where Y=2. b b≥n, where n is the number of digital TR components; the loss of the optical link formed by the first-stage X-ray power divider and the second-stage optical power divider is z2.

[0012] The Y-splitter is directly connected to the digital TR components installed in each high-frequency box through two optical connectors and three FC-FC optical fiber lines. The loss of the optical link formed by the Y-splitter and the digital TR components is z3. Under the condition that there is no fiber breakage, the optical signal loss in the entire optical fiber is negligible.

[0013] The parameters of the first-stage optical power divider and the second-stage optical power divider have the following relationship: X≥m, Y≥n, where X and Y are both multiples of 2.

[0014] The power output M of the optical amplifier is defined as: M ≥ 2*(a+b)+c+(z1+z2+z3), where: c: Minimum required input optical power for digital TR components; a: From the formula X=2 a We get a = log2 X ; b: From the formula Y=2 b We get b = log2 Y ; z1: Loss from optical amplifier to first-stage optical power divider; z2: Loss from the first-stage optical power splitter to the second-stage optical power splitter; z3: Loss from the second-stage optical power divider to the digital TR component.

[0015] (See) Figure 1 The parameter calculation methods for the main equipment in the optical synchronization control network are the same as those for optical amplifiers and optical power dividers. A) Optical power splitting method and optical power splitter parameters: The number of cascaded optical power splitters is determined based on the number of digital TR components on the array and the distribution of the high-frequency boxes. If it is a single-stage optical power splitter, the optical power fraction of the optical power splitter is determined directly based on the number of digital TR components. If it is a two-stage power splitter, the optical power fraction of the first-stage optical power splitter is determined based on the number of high-frequency boxes, and the optical power fraction of the second-stage optical power splitter is determined based on the number of digital TR components in the high-frequency boxes.

[0016] B) Optical amplifier parameters: Based on the optical power input requirements of the digital TR component, the power fraction of each level of the optical power divider in the optical synchronization control network, and the actual measured loss of each level of fiber connection, calculate the minimum required output optical power of the optical amplifier.

[0017] This invention discloses an optical synchronization control network system for a phased array radar with digital TR components. Based on the number and installation method of the digital TR components on the array, the selection of two-stage optical power dividers is determined. At the same time, based on the input requirements and optical line loss of the digital TR components, the output of the optical amplifier is determined, and the selection of the optical amplifier is confirmed. Finally, the main equipment components of the array synchronization control optical network, as well as the structure and connection method of the array synchronization control optical network, are designed. 1) Determine the number of high-frequency boxes (m) used to install digital TR modules in the phased array radar array, and the number of digital TR modules installed in each high-frequency box (n); (see...) Figure 1 ); 2) Determine the minimum optical power input sensitivity of each digital TR component as c, in dBm; 3) Design a two-stage optical power divider connected in series. Based on the number of high-frequency boxes m, set the first-stage optical power divider as one divider X (X=2). a ) Optical power splitter, 2 a ≥m, based on the number n of digital TR components, select the second-stage optical power divider as one Y (Y=2). b ) Optical power splitter, 2 b ≥n; 4) The network body consists of an optical amplifier, a first-stage optical power divider, and a second-stage optical power divider. The optical amplifier connects to the first-stage optical power divider, the first-stage optical power divider connects to the second-stage optical power divider, and the second-stage optical power divider connects to a certain digital TR component, forming three optical links. The losses of each optical link are z1, z2, and z3, respectively. 5) Based on 1)-4), the output optical power M of the selected optical amplifier must meet the following relationship: M≥2*(a+b)+c+(z1+z2+z3); 6) The X (X=2°) optical power splitter is connected to the optical amplifier via two FC optical connectors and three FC-FC optical fiber lines. The insertion loss of the X (X=2°) optical power splitter is 1dBm. The X (X=2") optical power splitter and the Y (Y=2°) optical power splitter are also connected via two FC optical connectors and three FC-FC optical fiber lines. The insertion loss of the Y (Y=2") optical power splitter is 1dBm. The Y (Y=2") optical power splitter is installed in the high-frequency box and is connected to the digital TR component without loss via one FC-FC optical fiber line. 7) The FC optical connector and FC-FC optical fiber mentioned above may be replaced with other general-purpose optical connectors and optical cables that are sandproof, dustproof, waterproof and salt sprayproof, depending on the actual usage environment requirements of the equipment. These general-purpose optical connectors and optical cables include: J599 series and WBGLFKS series optical connectors and optical fibers.

[0018] (See) Figure 2 ), Figure 2 This is a schematic diagram illustrating the implementation and cascading of an optical synchronization control network system for a digital TR component phased array radar according to the present invention. (The connection relationship of the optical synchronization control network devices of the present invention in a certain practical application scenario).

[0019] exist Figure 2 The following describes the internal and external cascading reference relationships of the optical synchronization control network in the scenario of Example 1. Example 1

[0020] The array has 7 high-frequency boxes (m) and a total of 91 digital TR modules. The input optical power requirement for the digital TR modules is ≥-7dBm. The array optical amplifier power divider network design is as follows: 1) The first-stage optical power splitter is selected as a 1-to-8 optical power splitter (8=2). 3 >7); 2) The second-stage optical power splitter is selected as a 1 to 16 optical power splitter (16 = 2). 4 >(91 / 7); 3) The optical amplifier to the first-stage 1-to-8 optical power splitter passes through two FC optical connectors, with a loss of 2*0.5dBm=1dBm; the first-stage 1-to-8 optical power splitter output insertion loss is 1dBm, and the first-stage 1-to-8 optical power splitter to the second-stage 1-to-16 optical power splitter passes through two FC optical connectors, with a loss of 2*0.5dBm=1dBm; the second-stage 1-to-16 optical power splitter output insertion loss is 1.5dBm, and the second-stage 1-to-16 optical power splitter is directly connected to the digital TR component in the high-frequency box without loss; under the condition that there is no fiber breakage, the optical signal loss in the entire optical fiber is negligible.

[0021] The optical amplifier selection requires an output optical power M of: M≥(-7+2*(3+4)+(1+1+1+1.5))dbm, that is, M≥11.5dbm.

[0022] Based on the above design and calculation requirements, the optical synchronization control network system for a digital TR component phased array radar of the present invention selects the following equipment: Fiber optic cable connection: FC-FC fiber optic cable (Factory 158); Optical connector: FC optical connector (Factory 158); Optical amplifier: GPA-1550-15-05X02 / 04X-1520 / 17-04-UF (Nanjing Quanxin); 1 to 8 optical power divider: APLC-1×8-FCA (Chengdu Hongxin); 1 to 16 optical power divider: APLC-1×16-001 (Chengdu Hongxin).

[0023] The above description is merely a preferred embodiment of the present invention. The above examples do not limit the substantive content of the present invention in any way. Any simple modifications or variations made by those skilled in the art to the above specific embodiments based on the technical essence of the present invention after reading this specification, as well as equivalent embodiments that may be changed or modified using the disclosed technical content, shall still fall within the scope of the technical solution of the present invention and shall not depart from the essence and scope of the present invention.

Claims

1. An optical synchronization control network system for a digital TR module phased array radar, comprising an optical synchronization control network, a main control subsystem, multiple high-frequency boxes, multiple digital TR modules, FC optical connectors, and FC-FC optical fibers; characterized in that: The input of the optical synchronization control network is connected to the main control subsystem, and the output of the optical synchronization control network is directly connected to the digital TR components installed in the high-frequency box. The optical synchronization control network receives the synchronization control optical signal sent by the main control subsystem, amplifies the optical signal through an optical amplifier, and then distributes it through a network power divider of two stages of passive optical power dividers, and sends it to each independent digital TR component, so as to realize the detection timing synchronization and simultaneous control of all digital TR components on the array. 1) Determine the number of high-frequency boxes used to install digital TR components in the phased array radar array of the digital TR components as m and the number of digital TR components installed in each high-frequency box as n; 2) Determine the minimum optical power input sensitivity of each digital TR component as c, in dBm; 3) Design a two-stage optical power divider connected in series. Based on the number of high-frequency boxes m, set the first-stage optical power divider as one divider X (X=2). a ) Optical power splitter, 2 a ≥m, based on the number n of digital TR components, select the second-stage optical power divider as one Y (Y=2). b ) Optical power splitter, 2 b ≥n; 4) The optical synchronization control network consists of an optical amplifier, a first-stage optical power divider, and a second-stage optical power divider. The optical amplifier connects to the first-stage optical power divider, the first-stage optical power divider connects to the second-stage optical power divider, and the second-stage optical power divider connects to a digital TR component, forming three optical links. The losses of each optical link are z1, z2, and z3, respectively. Under the condition that there is no fiber breakage, the optical signal loss in the entire fiber is negligible. 5) Based on 1)-4), the output optical power M of the selected optical amplifier must meet the following relationship: M≥2*(a+b)+c+(z1+z2+z3).

2. The optical synchronization control network system for a digital TR component phased array radar according to claim 1, characterized in that: The X-splitter (X=2°) and the optical amplifier are connected via two FC optical connectors and three FC-FC optical fibers. The X-splitter (X=2°) has an insertion loss of 1 dBm. The X-splitter (X=2") and the Y-splitter (Y=2°) are also connected via two FC optical connectors and three FC-FC optical fibers. The Y-splitter (Y=2") has an insertion loss of 1 dBm. The Y-splitter (Y=2") is installed in a high-frequency box and is losslessly connected to the digital TR component via a single FC-FC optical fiber.

3. The optical synchronization control network system for a digital TR component phased array radar according to claim 2, characterized in that: The FC optical connectors and FC-FC optical fibers mentioned above can be replaced with J599 series and WBGLFKS series optical connectors and optical fibers according to the actual usage environment requirements of the equipment.

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