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High-precision synchronization method for phased array radar system

A phased array radar, high-precision synchronization technology, applied in the field of phased array radar, can solve the problems of high wiring and circuit design requirements, uncontrollable delay, unstable synchronization, etc.

Pending Publication Date: 2020-10-20
JINAN INSPUR HIGH TECH TECH DEV CO LTD
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Problems solved by technology

The current synchronization method of TR components is mostly a pulse trigger method with uncontrollable delay, which has high requirements for wiring and circuit design, and there are situations where synchronization is unstable.

Method used

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  • High-precision synchronization method for phased array radar system

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Embodiment Construction

[0018] Attached below figure 1 The present invention will be further described.

[0019] A high-precision synchronization method for a phased array radar system, comprising the steps of:

[0020] a) Set up the processing card and the central control machine, and the processing card is equipped with an FPGA chip II, a DDR cache chip II connected to the FPGA chip II and a clock source II, and the FPGA chip II is connected to the FPGA chip I of N TR components , the TR component is equipped with FPGA chip I, AD module, DA module, and DDR cache chip I connected to FPGA chip I, N is a positive integer greater than or equal to 2, each TR component is connected to clock source I, and clock source I is each The TR components provide clock signals of the same source and frequency, and each TR component is connected to the transceiver antenna;

[0021] b) In the processing card, the highest clock frequency of the FPGA chip II is used to send the synchronization pulse signal of the clo...

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Abstract

The invention discloses a high-precision synchronization method for a phased array radar system. An FPGA chip II on a processing card calculates the delay time from the processing card to different TRcomponents through a single synchronous signal line connected with the TR components, so that the emission delay time difference of the different TR components can be controlled to be within a singleclock period of the highest working frequency of the FPGA; the structure is simple, the delay between the TR components is controllable, and the wiring number between board cards is reduced. The timedelay precision between the processing card and the different TR components can be controlled within the minimum clock period when the FPGA can work, the precision is high and controllable, communication cables between the processing card and different TR components are not limited to the equal-length design any more, the development and layout difficulty is lowered, and the practicability is high.

Description

technical field [0001] The invention relates to the technical field of phased array radar, in particular to a high-precision synchronization method for a phased array radar system. Background technique [0002] The antenna unit of a phased array radar is composed of multiple TR components, and the different phase signals sent by each TR unit will affect the final antenna beam. The current synchronization method of TR components is mostly a pulse trigger method with uncontrollable delay, which has high requirements for wiring and circuit design, and there are situations where synchronization is unstable. Contents of the invention [0003] In order to overcome the deficiencies of the above technologies, the present invention provides a high-precision synchronization method for a phased array radar system. [0004] The technical scheme that the present invention overcomes its technical problem adopts is: [0005] A high-precision synchronization method for a phased array ra...

Claims

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Application Information

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IPC IPC(8): G01S7/02
CPCG01S7/023Y02A90/10
Inventor 王帅王子彤李朋
Owner JINAN INSPUR HIGH TECH TECH DEV CO LTD
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