基于USB数字电离层斜测接收机设计

The Design of a Digital Ionospheric Oblique Receiver Based on USB Interface

为了满足电离层斜测接收设备小型化的需求,提出了一种小型化数字斜测接收机的设计方案。该接收机使用16 bit AD进行数据采集,利用FPGA进行时序控制和实时数据的数字下变频,最后通过CY7C68013A的USB2.0接口与上位机进行数据传输。实测结果表明,该接收机灵敏度,动态范围满足设计指标。USB高速传输速率为480Mbps,且传输稳定。实测结果与设计预期有较好的一致性。该接收机具有体积小、功耗低、传输稳定以及便于维护的特点,为短波接收设备的小型化提供了一种可行的参考方案。

In order to meet the requirement of miniaturization of ionospheric oblique receiver,a design scheme of miniaturized digital ionospheric oblique receiver was put forward.The receiver uses a 16 bit AD for data acquisition and FPGA for timing control and digital down-conversion of real-time data.After all above have been done,receiver transmits data with the upper PC by using USB2.0 interface of chip CY7C68013A.The measured results show that its dynamic range and the sensitivity meet the design indicators.It also have a stable transmission rate which can reach almost 480Mbps.The measured results are in good agreement with the design expectation.It provides a feasible reference scheme for the miniaturization of short-wave receiving equipment by the characteristics of small size,low power consumption,stable transmission and easy maintenance.