Why does China's new track detection test satellite adopt a peculiar spherical shape?Reveal

At 12:12 on July 27th, Liejong No. 1 Launar Rockets successfully launched at the Jiuquan Satellite Launch Center. Six satellites such as rail atmospheric density detection test satellites were successfully sent to the scheduled track, and the launch task was successful. Among them, the orbit atmospheric density detection test satellite form is peculiar -it is a "ball" with a diameter of 60 cm, and the quality is only 36 kg. It will be used in the fields of precision rails and atmospheric density.

The traditional atmospheric density counter -and method has high requirements for satellite operation. In order to obtain high -precision atmospheric density, it is necessary to accurately grasp the changes in satellite face quality ratio and damping coefficient. The irregular satellite, the damping coefficient of the welcoming area and the satellite surface changes over time, which has caused some difficulties in the density of the atmospheric density.

The orbit atmosphere density detection test satellite was jointly developed by the Solar Activity and Space Weather Key Laboratory of the National Space Science Center of the Chinese Academy of Sciences and the Shanghai Academy of Sciences Shanghai Micro Satellite Innovation Research Institute. Scientific researchers are facing the problem of high -precision atmospheric detection and forecasting, adopt the method of density density, and at the same time consider the launch requirements to design a satellite as a quality of 36 kg and a diameter of 60 cm of lightweight spherical satellites. The satellite is equipped with two GNSS receivers and laser horn reflexes, which can be used for precision rail and atmospheric density.

The spherical satellite configuration is simple and has a certain face -to -face ratio, which can not only significantly reduce the impact of various parameter changes on the anti -density of the atmospheric density, but also the satellite can not have to make frequent posture adjustments. manufacturing cost.

After the satellite is track, it will use the equipped GNSS receiver data to detect the density of atmospheric density. It is expected that it will effectively improve the counter -discovery accuracy of the atmospheric density, lay the data foundation for the dynamic correction of the atmospheric density, Effective support for application areas with high requirements for atmospheric density.