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The first large-scale "reflective surface antenna prototype" (referred to as SKA-P), the first large-scale scientific project of the square-meter array radio telescope (referred to as SKA), which is led by the Chinese side and is called the "eye of the earth", is in China. The 54th Electronic Technology Group Corporation (referred to as the 54th China Electronics Division) is factory. This indicates that China has begun to play a leading and leading role in the development of SKA core equipment, and has provided “antenna solutions” for the world's success in international science projects.

SKA is the world's largest integrated aperture radio telescope planned by the international astronomical community, and is jointly built by many countries around the world. The SKA site is located in the quiet radio zone of eight countries in Australia, South Africa and southern Africa. The receiving area is about 1 square kilometer, which is equivalent to 140 football fields.

When SKA is completed, it will increase the sensitivity of the EVLA, which is the largest radio telescope array, by about 50 times, and the speed of the survey by about 10,000 times, which provides an important opportunity for human beings to understand the universe.

SKA is dedicated to revealing the mysteries of the universe, such as the dawn of the universe and the cradle of life, and answering the basic problems of the universe, such as the first light of the universe, the formation of structures, and the origin of life. It is expected to open up a new era for human understanding of the universe.

In 2011, seven countries including China established the SKA Independent Legal Institution (SKAO) as a founding member. SKAO currently has 10 member states in Australia, Canada, China, India, Italy, New Zealand, South Africa, Sweden, the Netherlands and the UK, and is headquartered in the UK. The SKA project is divided into the construction preparation phase, the construction phase and the operation phase (estimated 50 years). It is expected that the procurement tender will be started in 2019 and the construction will start in 2020.

It is understood that the design and construction of SKA-P is under the leadership of China Electronics 54. The concept design was proposed in May 2015. At the international selection meeting of antenna design schemes held in November of the same year, the international jury composed of several experts was comprehensively considered based on factors such as design maturity, construction and installation plan, and cost. The Chinese design proposal is recommended as the sole development plan for SKA-P.

In 2017, the Joint Radio Astronomy Technology Laboratory (JLRAT), jointly established by China Electronics 54 and the National Astronomical Observatory, became the new lead unit of the SKA Antenna Work Package Alliance, and was jointly carried out by 20 research institutes in South Africa, Germany, Italy and other countries. SKA reflector antenna research and development, and undertaken the research and development of SKA-P.

According to Zhang Guihua, director of the 54th China Electronics Division, the performance of the reflector antenna is related to the overall performance of SKA and the realization of the main scientific goals. SKA puts very high requirements on antenna technical indicators and engineering construction. On the one hand, it needs to meet the requirements of high sensitivity, high pointing accuracy, high pointing consistency, ultra-wideband, high electromagnetic shielding and large field of view. To meet the requirements of low manufacturing costs, rapid construction and easy maintenance.

Through five years of technical research, JLRAT led the international team through standardization, modularization, refinement and integrated design, so that SKA-P finally technically meets all technical indicators of SKA.

The design life of the antenna is 50 years, which is 2/3 of the weight of the conventional antenna. It has the advantages of low power consumption, low cost, easy installation, easy transportation and mass production, which lays a strong foundation for the smooth implementation of the future SKA project. .

Experts pointed out that the successful development of SKA-P is a major achievement in the development of SKA engineering and has important milestones. As an increasingly important pole in SKA's global diversified innovation map, China will continue to actively integrate into the global innovation network in the future, taking SKA International Science and Engineering as an opportunity to promote China's programs, Chinese technology, and Chinese radio astronomy to the center of the world stage. .

In recent years, China has built several radio telescopes in succession, and astronomical research is gradually becoming first-class.

Wang Jiangjiang, head of ZTE's representative office in Pakistan, said: "DTMB is a new technology for China's independent intellectual property rights. As a new technology export, it can also promote the international development of the entire DTMB industry while demonstrating the hard power of China's technology, standards and manufacturing. Promote the spread of Chinese culture and increase mutual understanding among people in the country."

As China and Pakistan further deepen their cooperation projects in the "China-Pakistan Economic Corridor", ZTE, as China's largest listed company of communications equipment, will do its utmost to promote cooperation between the two countries in the field of communications and provide the best quality for the Pakistani people. Products and services.

Source: Shenzhen Yuda Communication Equipment Co., Ltd.