Space Research and Mini-satellites in Secondary High School
Issue:
Volume 5, Issue 5, October 2017
Pages:
71-78
Received:
9 August 2017
Accepted:
13 September 2017
Published:
16 November 2017
Abstract: Space research, the universe and satellites are three fascinating questions to which students have no possible answers in the regular school curriculum. Therefore, every opportunity to bring these topics into school activities and closer to the students’ interest is welcome. The European CanSat competition held by ESA (European Space Agency) presented itself as one solution for meeting this demand. CanSat is a minisatellite that can be fit into a Coca-Cola soda can (330ml) and it is released from 1km altitude. This mini device is based on Arduino- microcontroller and it performs certain scientific missions like measuring air pressure, temperature, humidity, dust pollution, radiation level, location, telemetry, etc. This competition and the preparation period are useful for students as they offer a special opportunity to learn about sensors, microcontrollers, radio communication, space research missions, project management. Furthermore, they help the development of technical skills and applications of the acquired theories.
Abstract: Space research, the universe and satellites are three fascinating questions to which students have no possible answers in the regular school curriculum. Therefore, every opportunity to bring these topics into school activities and closer to the students’ interest is welcome. The European CanSat competition held by ESA (European Space Agency) presen...
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Terahertz Imaging Progress at Capital Normal University
Guozhong Zhao,
Jiayi Yu,
Yashang Li,
Jia Wang
Issue:
Volume 5, Issue 5, October 2017
Pages:
79-84
Received:
1 August 2017
Accepted:
28 October 2017
Published:
1 December 2017
Abstract: The progress on terahertz imaging at Capital Normal University in Beijing is presented. Our works on Terahertz Imaging include the active and passive imaging. For the active terahertz imaging, the pulse and continue wave terahertz imaging are studied, respectively. The active terahertz pulse imaging is based on the terahertz time-domain spectroscopy (THz-TDS). A practical focus-plane imaging system is built up based on the THz-TDS with the probe-beam-expanded electro-optical sampling and an infrared CCD imaging. The active terahertz continuous wave imaging is based on a CO2-laser-pumped terahertz coherent source and an uncooled bolometer array of terahertz camera. The active terahertz polarization imaging and wave front imaging is developed. For the passive terahertz imaging, the low frequency of radiometers are used to detect the point-to-point beam-scanned terahertz signal by the optical focusing and scanning system so that the passive THz imaging is realized for the security inspection of human body. The related components and image processing methods are studied and used for the improvement of imaging speed and resolution. The research on THz imaging technology at Capital Normal University is opening up a potential application in the field of non-destructive testing and security inspection for the terahertz technology.
Abstract: The progress on terahertz imaging at Capital Normal University in Beijing is presented. Our works on Terahertz Imaging include the active and passive imaging. For the active terahertz imaging, the pulse and continue wave terahertz imaging are studied, respectively. The active terahertz pulse imaging is based on the terahertz time-domain spectroscop...
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