Wide-band ground-penetrating radar portable data acquisition system

1995 ◽  
Author(s):  
Charles A. Amazeen
Keyword(s):  
Data Acquisition ◽  
Ground Penetrating Radar ◽  
Wide Band ◽  
Data Acquisition System ◽  
Acquisition System ◽  
Ground Penetrating

Design of a multi-function high-speed digital baseband data acquisition system

2021 ◽  
Vol 21 (10) ◽  
pp. 248
Author(s):  
Xin Pei ◽  
Jian Li ◽  
Na Wang ◽  
Toktonur Ergesh ◽  
Xue-Feng Duan ◽  
...  
Keyword(s):  
Data Acquisition ◽  
Radio Telescope ◽  
High Speed ◽  
Single Channel ◽  
Wide Band ◽  
Data Acquisition System ◽  
Acquisition System ◽  
Single Server ◽  
Long Baseline ◽  
Digital Baseband

Abstract A multi-function digital baseband data acquisition system is designed for the sampling, distribution and recording of wide-band multi-channel astronomical signals. The system hires a SNAP2 board as a digital baseband converter to digitize, channelize and packetize the received signal. It can be configured dynamically from a single channel to eight channels with a maximum bandwidth of 4096 MHz. Eight parallel HASHPIPE instances run on four servers, each carrying two NVMe SSD cards, achieving a total continuous write rate of 8 GB s−1. Data are recorded in the standard VDIF file format. The system is deployed on a 25-meter radio telescope to verify its functionality based on pulsar observations. Our results indicate that during the 30-minute observation period, the system achieved zero data loss at a data recording rate of 1 GB s−1 on a single server. The system will serve as a verification platform for testing the functions of the QTT (QiTai radio Telescope) digital backend system. In addition, it can be used as a baseband/VLBI (Very Long Baseline Interferometry) recorder or D-F-engine of correlator/beamformer as well.

Design of supervisory control and data acquisition system based on GIS technology

2013 ◽  
Vol 33 (2) ◽  
pp. 567-570
Author(s):  
Zeping YANG ◽  
Deqiang LIU ◽  
Qian WANG ◽  
Qiangming XIANG
Keyword(s):  
Data Acquisition ◽  
Supervisory Control ◽  
Data Acquisition System ◽  
Acquisition System ◽  
Gis Technology
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