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Mass high-speed digital signal source based on microcomputer PCI bus

A high-speed digital signal, PCI bus technology, applied in the field of digital signal source, to achieve the effect of simple and intuitive operation, good compatibility and low cost

Inactive Publication Date: 2003-07-09
LIAONING PUTIAN OPTOELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ordinary signal sources are obviously difficult to meet the requirements, so it is necessary to develop a general signal source suitable for this type of system. This signal source is not only an ordinary arbitrary waveform digital signal generator, but also can generate output suitable for various debugging systems. actual signal

Method used

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  • Mass high-speed digital signal source based on microcomputer PCI bus
  • Mass high-speed digital signal source based on microcomputer PCI bus
  • Mass high-speed digital signal source based on microcomputer PCI bus

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Embodiment

[0027] During the development of the real-time imaging processing system, a digital signal source for simulating radar echo signals is required at the input of the imaging processor. Since the radar works in the way of transmitting pulse trains, the radar echo signal is also a pulse train, that is, the signal is in burst mode. In the duration of each pulse, 8192 points are sampled with a 66.6M clock, and each point is divided into two channels of I and Q with 8 bits each (such as figure 2 shown), the pulse transmission frequency (PRF) is up to 2000Hz. It can be seen from this that the amount of data output by the radar signal is large, and the peak speed is very high (up to 66.6×2MB / s). Although the average rate has dropped due to the fact that it is only sent during the burst, the average data volume per second still reaches about 32MB / s when PRF=2000, and the corresponding signal source is required to be a high-speed data source device to complete the burst high-speed dat...

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Abstract

The mass high-speed digital signal source based on microcomputer PCI bus includes: microcomputer for producing various waveform signals of signal source and storing them into hard disk of microcomputer; PCI bus controller for PCI bus inteface work between signal source and microcomputer; signal storage equipment for storing data transferred from hard disk through PCI bus for the moment, local bus controller for controlling consistent work of interior of signal source; and high-speed output port of providing and debugging system correspondent interface and ensuring smooth and errorloss output of data flow. Said invention can utilize friendly human-machine interface property of Windows operation system to develop correspondent application program to control data transmission of signal source board card to make operation of signal source simple and visual.

Description

technical field [0001] The invention relates to a digital signal source, in particular to a massive high-speed digital signal source based on a microcomputer PCI bus. Background technique [0002] With the development of microelectronics technology and large-scale integrated circuits, more and more large-scale digital signal processing systems have been put into operation, such as video-on-demand system VOD (Video-On-Demand), high-definition television HDTV (High-Definition TV), wireless communication system, and synthetic aperture radar SAR (Synthetic Aperture Radar) real-time imaging processing system, etc. These systems require a large number of high-speed digital signal sources in the process of development, debugging, and integration to replace the complicated and expensive signal acquisition process, or to simulate a dangerous and unallowable test process to generate the high-speed digital signal required by the actual system. Input to In the system, various functions...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/14
Inventor 徐永健姚萍王贞松汤振宇
Owner LIAONING PUTIAN OPTOELECTRONICS TECH