基于USB2．0的数字高速采集设备设计

在卫星通信领域中，所要采集的数字信号主要是从卫星上接收下来，经过接收机、解调器解调后的信号，我们以前使用的各种采集设备，有的采集速率低，有的不够便携，为了适应各种速率和型号的解调器，就必须研制具有针对性和专用性的数字采集设备，它须有多规格信号接口，兼容各种高低速率的信号采集、具有小型化和便携化等特点，以此适应卫星采集领域的应用。文中介绍了一种基于USB2．0的数字高速采集设备的设计方法。

A Design of High-speed Data Acquisition Device Based on USB2.0

In the field of satellite communications, the digital signals to be acquired are mainly the ones which are first received from the satellite, and then demodulated through receiver and demodulator. Some of the before-used acquisition devices have low rate of acquisition, and some are not portable enough. In order to adapt to the demodulators with different rates and models, the data acquisition device with pertinence and Customization should be developed. It should have multi-specification signal interface, and should be compatible with signal acquisition of a variety of high and low rates, and should have the features of small and portable size, thus to adapt to the application in the field of the satellites acquisition. This article describes a design method of a high-speed data acquisition device based on USB2.0.