A digital array radar optical fiber transmission network and its control method
A technology of digital array radar and optical fiber transmission, which is applied in optical fiber transmission, optical multiplexing system, multiplexing communication, etc., can solve the mutual signal interference between complex networking, and the transmission method cannot meet the development needs of digital array radar. , the limited transmission rate of electrical signals, etc., to avoid competition
Active Publication Date: 2021-09-03
CHENGDU CHENGDIAN GUANGXIN TECH
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Problems solved by technology
[0003] According to the development characteristics of radar sensors, digital array radar has massive data transmission needs. At present, the existing technical solutions have transmission methods based on electrical signals, but the transmission rate of electrical signals is limited and there is a problem of mutual signal interference for complex networking itself. , so the transmission method based on electrical signals cannot meet the development needs of this new complex digital array radar
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[0033] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.
[0034] Any feature disclosed in this specification, unless specifically stated, can be replaced by other equivalent or similar purpose alternative features. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.
[0035] Radar transmission network interconnection requirements such as figure 1 As shown, the system consists of a processor and multiple sub-arrays, and the processor and sub-array sensor units are interconnected through a transmission network. There are the following communication requirements between the processor and the subarray.
[0036] In order to describe the communication relationship between sensor nodes more conveniently, the definition is as follows: the communication relationship matrix is defined ...
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The invention discloses a digital array radar optical fiber transmission network and a control method thereof. The optical fiber transmission network includes a wavelength division multiplexing and demultiplexing unit and a 1:M power divider. The wavelength division multiplexing and demultiplexing unit passes a single-mode The optical fiber is connected to the processor, and is connected to each sub-array in the array surface through a single-mode optical fiber; the 1:M power divider is connected to the wavelength division multiplexing and demultiplexing unit through a single-mode optical fiber, and is connected to the array through a single-mode optical fiber Each sub-array in the plane is connected, M is the number of sub-arrays in the array plane, and the sub-array is composed of multiple T / R module sub-array units. The present invention is based on WDM technology and PON technology, supports the transmission of downlink digital signals, downlink analog signals and uplink digital signals, and uplink digital signals adopts a time-division multiplexing mechanism, which avoids the phenomenon of competition when the sub-arrays send data to the processor. Downlink analog and digital signals adopt a broadcast mechanism to ensure that all sub-array units receive the same data.
Description
technical field [0001] The invention relates to the technical field of digital array radar transmission network design, in particular to a digital array radar optical fiber transmission network and a control method thereof. Background technique [0002] The development of radar array technology roughly experienced three main processes, that is, from the original passive array to the active array, and now to the digital array that has become a research hotspot. In recent years, digital array radar has developed rapidly. Both its receiver and transmitter adopt digital beamforming technology, which has good flexibility and versatility. With the rapid development of ultra-large-scale digital circuits, ultra-high-speed processing chips and other technologies, digital Array radar is gradually replacing conventional analog radar. The strong real-time and mass data transmission characteristics of digital array radar put forward new requirements for the design of radar high-speed tra...
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IPC IPC(8): H04B10/25H04B10/40H04J3/16H04J14/02H04Q11/00
CPCH04B10/25H04B10/40H04J3/1652H04J14/0202H04J14/0204H04J14/0209H04J14/0227H04Q11/0067
Inventor 解军张敏蒲剑
Owner CHENGDU CHENGDIAN GUANGXIN TECH