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Multimode multi-machine X-channel programmable pulse synchronization control method and device

A programming pulse and synchronous control technology, which is applied in the electronic information field of aerospace, can solve the problems of system synchronization accuracy reduction, programmable pulse waveform cannot achieve complete synchronization, etc., and achieve the effect of improving synchronization accuracy

Active Publication Date: 2012-07-04
XIAN UNISTRONG NAVIGATION TECH CO LTD
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Problems solved by technology

[0003] However, in the prior art, when multiple machines are not turned on at the same time, the programmable pulse waveforms output by them cannot be completely synchronized, which greatly reduces the synchronization accuracy between the systems.

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  • Multimode multi-machine X-channel programmable pulse synchronization control method and device
  • Multimode multi-machine X-channel programmable pulse synchronization control method and device
  • Multimode multi-machine X-channel programmable pulse synchronization control method and device

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Embodiment Construction

[0036] The multi-mode and multi-machine X-channel programmable pulse synchronization control method of the present invention is as follows: take a certain fixed time as the reference, calculate the difference between the current time and the set time to obtain the offset time, and then calculate the difference between the two offset times , convert the unit to seconds, and then use the cycle length of the channel to obtain the pulse cycle state at the current moment. The concrete implementation steps of this method are:

[0037] (1) Use GPS time and second pulse to find synchronization reference;

[0038] Input the PPS signal of the timing module to FPGA and MCU to find the benchmark; and input the serial port of the timing module to the MCU to extract the year, month, day, hour, minute and second;

[0039] (2) Use MCU to process GPS time synchronization and pulse parameter setting;

[0040] Extract the GPS time output by the GPS module: year Yearc, month Monc, day Dayc, hou...

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Abstract

The invention discloses a multimode multi-machine X-channel programmable pulse synchronization control method and a multimode multi-machine X-channel programmable pulse synchronization control device. The method comprises the following steps of: taking certain fixed time as a reference, resolving reference time deviations, calculating a difference between the two reference time deviations, converting a unit to second, and calculating the state of a pulse cycle at the current time by utilizing the cycle length of a channel. By the method and the device, a plurality of machines which are asynchronously started can output synchronous programmable pulse waveforms, so that time and frequency synchronization accuracy is effectively improved when the plurality of machines are asynchronously started, and the time synchronization accuracy of dozens of nanoseconds can be achieved.

Description

technical field [0001] The invention belongs to the technical field of aerospace electronic information, in particular to a multi-mode and multi-machine X-channel programmable pulse synchronization control method and device. Background technique [0002] The high-precision timing module generally uses the timing function of the satellite positioning and navigation system to give accurate time pulse information. Use the time service terminal to complete the time and frequency synchronization with the navigation system. [0003] However, in the prior art, when multiple machines are not turned on at the same time, there is no way to achieve complete synchronization of the programmable pulse waveforms output by them, which greatly reduces the synchronization accuracy between the systems. Contents of the invention [0004] The purpose of the present invention is to overcome the above-mentioned shortcoming of the prior art, provide a kind of multi-mode multi-machine X-channel p...

Claims

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Application Information

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IPC IPC(8): G04G7/00G04G3/00G01S19/14
Inventor 陈云
Owner XIAN UNISTRONG NAVIGATION TECH CO LTD
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