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Contribution from SOIR/VEX to the updated Venus International Reference Atmosphere (VIRA)

Vandaele, A. C.; Trompet, L.; Robert, S. +9 more

The SOIR instrument on-board Venus Express is an infrared spectrometer covering the 2.2-4.3 µm spectral region. This instrument allows the detection of several key species of the Venus atmosphere, including CO₂, CO, H₂O/HDO, HCl, HF and SO₂. From the CO₂ density measurements, temperature is inferre…

Future dedicated Venus-SGG flight mission: Accuracy assessment and performance analysis

Zheng, Wei; Hsu, Houtse; Zhong, Min +1 more

This study concentrates principally on the systematic requirements analysis for the future dedicated Venus-SGG (spacecraft gravity gradiometry) flight mission in China in respect of the matching measurement accuracies of the spacecraft-based scientific instruments and the orbital parameters of the spacecraft. Firstly, we created and proved the sin…

First geodetic VLBI sessions with the Chinese Deep Space Stations Jiamusi and Kashi

Wang, Guangli; Xu, Dezhen; Dong, Guangliang +2 more

The first three 24-h S/X dual-band geodetic VLBI sessions using two new Chinese Deep Space Stations (CDSSs), Jiamusi and Kashi, and four Chinese VLBI Stations (CVSs), Beijing, Kunming, Seshan, and Urumqi were conducted with the goal of improving the two CDSSs' positions, which were previously known to a few decimeters. Due to the limited frequency…