A 96-antenna radioheliograph

نویسندگان
چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

The 1024 channel digital correlator receiver of the Gauribidanur radioheliograph

A low frequency (40–150 MHz) radioheliograph for observations of the solar corona is in operation for the last few years at the Gauribidanur radio observatory, about 100 km north of Bangalore. The array has 32 antenna groups and a 1-bit digital correlator system consisting of 1024 channels is used as the back-end receiver. This paper describes the latter and results of the associated system tests.

متن کامل

Perceptual Quality Improvement for Synthesis Imaging of Chinese Spectral Radioheliograph

Chinese Spectral Radioheliography can generate the images of the Sun with good spatial resolutions. It employs the Aperture Synthesis principle to image the Sun with plentiful solar radio activities. However, due to the limitation of the hardware, specifically the limited number of antennas, the recorded signal is extremely sparse in practice, which results in unsatisfied solar radio image qual...

متن کامل

Designing a Multiband Multi Polarization BTS Antenna

In this paper, a new antenna is presented which has an application in cellular telecommunication systems. The designed antenna works at the frequency range of 1900-2600 MHz which is able to cover 2G, 3G and 4G (LTE) services of the cellular telecommunication. In this paper, the micro-strip structure has been used to design the antenna. The shape of the patches is triangular where a peripheral r...

متن کامل

Calibration and Data Processing for a Chinese Spectral Radioheliograph in the Decimeter Wave Range

The Chinese Spectral Radioheliograph (CSRH) is a solar-dedicated interferometric array with a frequency range from 400MHz to 15GHz. There are 40 4.5m antennas with 400MHz to 2GHz, and 60 2m antennas with 2GHz to 15GHz in this telescope. CSRH is under construction at Mingantu station, which is about 400 km away from Beijing in China. Now, CSRH-I, which includes an antenna, a receiver, and a corr...

متن کامل

Atwell 96 a

Geoffrey Leech’s ideas have been inspirational both to Corpus-based computational linguists in general, and to me personally: first as a student and Researcher Associate at Lancaster University, then as a Lecturer in Artificial Intelligence at Leeds University. This chapter focuses on research at Lancaster and Leeds building on Geoffrey Leech’s ideas, looking in particular at how corpus resourc...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Research in Astronomy and Astrophysics

سال: 2014

ISSN: 1674-4527

DOI: 10.1088/1674-4527/14/7/008