English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

Chinese Spectral Radio Heliograph (CSRH) is an advanced aperture synthesissolar radio heliograph, developed by National Astronomical Observatories,Chinese Academy of Sciences independently. It consists of 100 reflectorantennas, which are grouped into two antenna arrays (CSRH-I and CSRH-II) forlow and high frequency bands respectively. The frequency band of CSRH-I is0.4-2GHz and for CSRH-II, the frequency band is 2-15GHz. In the antenna andfeed system, CSRH uses an Eleven feed to receive signals coming from the Sun,the radiation pattern with lower side lobe and back lobe of the feed is wellradiated. The characteristics of gain G and antenna noise temperature T effectthe quality of solar radio imaging. For CSRH, measured G is larger than 60 dBiand $ T $ is less than 120K, after CSRH-I was established, we have successfullycaptured a solar radio burst between 1.2-1.6GHz on November 12, 2010 throughthis instrument and this event was confirmed through the observation of SolarBroadband Radio Spectrometer (SBRS) at 2.84GHz and Geostationary OperationalEnvironmental Satellite (GOES). In addition, an image obtained from CSRH-Iclearly reveals the profile of the solar radio burst. The other observationalwork is the imaging of Fengyun-2E geosynchronous satellite which is assumed tobe a point source. This data processing method indicates that, the method ofdeleting errors about dirty image could be used for processing other surfacesources.

Antenna system characteristic and solar radio burst observation