Abstract
It is known that the data acquisition and processing system plays an important role in radar target detection system. In order to meet the requirements of real-time processing and accurate transmission of echo signals in high-frequency ground-wave radar (HFGWR) systems, a new acquisition and transmission framework utilizing the designed acquisition card based on the PCIe (peripheral component interconnect express) has been designed and is presented in this paper. The Xilinx FPGA (Field-Programmable Gate Array) chip Kintex7-XC7K325T is adopted as a hardware carrier in acquisition card. The hardware’s composition, analog front-end circuit, the DMA (Direct Memory Access) transmission, FPGA structure, ADC (Analog-to-Digital Converter) chip, and performance test of this card are showed and discussed. Currently, the acquisition card has been accomplished and applied in the practical system of HFGWR.
Highlights
Considering that the high frequency analog signal is susceptible to signal interference in the muti-channel data acquisition card, in order to avoid this interference, the differential signal transmission is adopted in the system
The Photograph of the designed data acquisition card and its workflow are shown in Figures 11 and 12 respectively
4, the designed acquisition processing accurate transmission of echo sig athe newrequirements acquisition and transmission framework ofand high-frequency ground-wave radar the requirements of real-time processing and accurate transmission of ech (HFGWR)
Summary
Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. Under new acquisition and transframework, in order to collect and analyze receiver’s output signals, a mission framework, in adequately order to adequately collect and the analyze the receiver’s output sigPCIe-based multi-channel data acquisition card thatcard can convert digital nals, a PCIe-based multi-channel data acquisition that cananalog convertsignals analoginto signals into signals beenhas designed and is presented in this paper. It relatesittorelates a newto digitalhas signals been designed and is presented in thisSpecifically, paper.
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