High-speed parallel acquisition system clock synchronization device

Abstract

The invention relates to a high-speed parallel acquisition system clock synchronization device. According to the synchronization device, a signal conditioning unit is configured; a clock input amplitude range is set; before a switch unit is switched on, signal amplitude is increased to be sufficient to make a post-amplifier saturate; and therefore, clock signals at a triggering initial time point can be consistently identified at each channel, and the synchronization of a multi-channel data acquisition system can be realized. With the synchronization device adopted, the synchronism of the data acquisition system is concentrated on the switching on and switching off of a radio frequency switch, and the transient time of the switching on and switching off of the switch can be substantially compressed, and error influences caused by clock jitter at an A / D sampling starting position can be eliminated, and therefore, clock signal amplitude can be consistently identified at each channel, and excellent stability and reliability can be realized; and the extremely-low phase noise characteristic of a radio frequency circuit is utilized, so that single ended-to-differential low noise conversion of high-speed clock signals can be completed, and the utilization efficiency of the device can be improved, and the size of the device can be effectively reduced, and the realization of the miniaturization of circuits can be benefitted.

Description

technical field [0001] The invention relates to the field of data acquisition, and more particularly relates to a high-speed parallel acquisition system clock synchronization device and method. Background technique [0002] The high-resolution capability and anti-jamming capability of the radar are closely related to the bandwidth of the radar signal. For example, in order to improve the ranging accuracy and distance resolution, and to perform imaging recognition on the target, the signal transmitted by the radar is required to have a large bandwidth and time-width product, that is, a wide Adding a broadband FM signal to the pulse to expand the signal frequency band and improve the overall performance of the radar involves large-bandwidth signal acquisition technology. [0003] At present, it is impossible to directly perform effective A / D conversion on signals with a bandwidth exceeding GHz. In order to realize the normal operation of radar systems and other broadband syste...

AI Technical Summary

Problems solved by technology

[0008] In order to solve the synchronization problem of multi-channel data acquisition system, the object of the present invention is to provide a high-speed parallel acquisition system clock synchronization device and method

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