Secondary radar digital inquiry coding implementation method

A secondary radar and implementation method technology, applied in the field of radar communication, can solve the problems of poor real-time performance, low power consumption, low programmability, etc., and achieve the effect of improving scalability

Active Publication Date: 2016-04-20
四川九洲空管科技有限责任公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a secondary radar digital interrogation coding implementation method, which solves the problems of traditional secondary radar encode

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  • Secondary radar digital inquiry coding implementation method

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[0029] The main realization idea of ​​the method of the present invention is to formulate digitization start time reference criteria and digitized data generation criteria through FPGA and PowerPC architecture, compile mode digital coded data scripts, receive mode change control commands in real time, automatically adjust query coded script data, and dynamically output digitized data Encoding pulse.

[0030] The method of the present invention specifically includes the following steps:

[0031] Step 1: Build the communication mechanism between FPGA and PowerPC:

[0032] According to the requirements of FPGA and PowerPC reading and writing speed, and the size of the transmitted data, the present invention chooses to use the bus as the transmission medium and the dual-port RAM core in the FPGA as the data interaction hub, which has high reliability, strong real-time performance, and fast data flow rate. Communication mechanism. Under this architecture, FPGA is used as a common extern...

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Abstract

The invention discloses a secondary radar digital inquiry coding implementation method. The method specifically comprises the following steps of constructing a communication mechanism, carding the digital content, planning a data communication format, formulating a digital starting time reference criterion and a digital data generation criterion, compiling a modal digital coded data script, receiving a mode changing control command in real time, automatically adjusting interrogation coding script data, and dynamically outputting digital coded pulses. According to the technical scheme of the invention, interrogation modes can be switched conveniently and accurately in real time. Meanwhile, interrogation coding pulses can be efficiently outputted based on the timing relationship thereof. When the method is applied to a ground-based radar and an airborne radar provided with a secondary radar device, the switching efficiency of interrogation modes is improved. Meanwhile, the real-time performance, the reliability and the stability of the secondary radar device are improved. Therefore, the tactical and technical index of a radar system is further improved. The method provides a stable and reliable basis for the synthetic combat commanding and the intelligent decision commanding of an electronic task system.

Description

technical field [0001] The invention relates to the technical field of radar (including an interrogator and a transponder of a secondary radar) communication technology, in particular to a novel secondary radar digital coding implementation method based on FPGA+PowerPC architecture. Background technique [0002] With the development of aviation industry, the increase of air traffic makes the role of air traffic management system very important. Air traffic controllers use radar to provide control services for identified aircraft, and can see the information parameters of the aircraft from the radar screen. In the air traffic management system, conventional mode and S mode technology are used for monitoring functions, based on independent addressing and selective inquiry, and information exchange is realized by pulse coding the content of the uplink query and downlink response. The encoder is the center of the entire radar, used to generate the synchronization signal and int...

Claims

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Application Information

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IPC IPC(8): G01S7/02G01S13/74
CPCG01S7/02G01S13/74
Inventor 张中南李海军张竞文唐斯亮
Owner 四川九洲空管科技有限责任公司
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