The ground station has not yet received a signal from the NanoDragon satellite

The ground station has not yet received a signal from the NanoDragon satellite - Photo 1.

The NanoDragon satellite was launched from the Uchinoura Space Center in Kagoshima Prefecture, Japan – Photo: VNA

Deputy General Director of the Vietnam Space Center Le Xuan Huy said that as of December 1, after 22 days of satellites in orbit, there are currently 2 out of 9 satellites launched at the technology test launch. This has not yet received a signal from the ground station.

These are ARICA satellites (of Aoyama Gakuin University, Japan) and NanoDragon satellite of Vietnam.

“The engineers of Vietnam Space Center continue to work hard to find the signal of NanoDragon. We believe that the process of making NanoDragon has brought a lot of experience and valuable lessons for engineers as well as staff. Department of the Center in all phases,” affirmed Mr. Le Xuan Huy.

NanoDragon is a satellite 100% researched, designed and manufactured in Vietnam. The satellite was successfully launched into a solar synchronous orbit at an altitude of 560km on November 9, 2021 at the Uchinoura Space Center in Kagoshima Prefecture, Japan.

This is a nano-class cubesat satellite weighing 3.8 kg with standard dimensions of 3U (100 x 100 x 340.5 mm). The satellite was developed with the aim of demonstrating that it is possible to use micro-satellite beam technology to receive automatic identification of ships for use in collision avoidance or to combine data for tracking and monitoring. close to ships at sea.

NanoDragon is also designed to verify the quality of the satellite posture and control system and a new advanced computer developed specifically for small satellites.

According to Mr. Huy, the NanoDragon satellite has 3 communication lines: the transmission of telemetry data (information about the satellite’s status) from the satellite to the ground in the UHF frequency band; control command line from the ground up in the VHF frequency band; mission data link from the satellite to the ground in the S-band.

Currently, the earth station has not received information on the telemetry data transmission line in the UHF band, so the detailed status parameters of the satellite are unknown.

During the preparation for launch, the NanoDragon satellite passed 4 rounds of launch safety tests of the Japan Aerospace Exploration Agency (JAXA) with many rigorous standards and important environmental tests such as: : 82-hour vacuum thermal environment tests, vibration tests (natural frequency test, sinusoidal vibration, random vibration, sine burst vibration), shock test and other functional tests.

The satellite has also passed the tests in Vietnam and was allowed to send it to Japan to participate in the JAXA’s planned launch from 6-8-2021.

The entire testing process in Japan is carried out and closely monitored with representatives from 5 relevant units: Vietnam Space Center – where satellites are manufactured, Kyushu Institute of Technology – testing site. , JAXA – Launching agency, HIREC – JAXA’s focal point for operations related to launch safety and MEISEI – partner company of Vietnam Space Center in Japan, equipment supplier Advanced tester is the central computer for the NanoDragon satellite. As a result, all the satellite’s indicators are up to standard and allowed to participate in the launch.

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