To further improve the navigation accuracy, the applicable condition and the main error factors, such as the atmospheric coefficient error and drag coefficient error are analyzed in detail.
The present study offers a multi-step approach, based on pollutant emission factors and atmospheric dilution coefficients, for a local comparative analysis.
To compensate for the extremely sparse laser tracking, the number of estimation parameters are minimized, and only the atmospheric drag coefficients are estimated with various intervals.
Model performance could be enhanced considerably when taking the narrowed horizon and a PPFD-adjusted atmospheric extinction coefficient into account.
In order to perform the robustness of the controller, the atmospheric resistance coefficient is considered as an unmodelled dynamical system.
Also, effects of the Gnevyshev Gap in the solar cycle modulation of the atmospheric attenuation coefficient for Rome neutron monitor during the past solar cycle (no. 22) are illustrated.
β sc is the total atmospheric scattering coefficient modeled as begin{array}rcl@ beta_{text{sc}} = beta_{mathrm{R}} + beta_{mathrm{M}}, end{array} (2).
The effective horizontal atmospheric diffusion coefficient is an empirical parameter adopted in plume models, that describes the effective spreading due to atmospheric turbulence and gravitational spreading at the Neutral Buoyancy Level (Costa et al. 2013).
In particular, we vary the total mass, the total grain-size distribution, the column height, and the effective atmospheric diffusion coefficient to evaluate how these parameters affect the hazard probability maps.
During the reentry process of reusable launch vehicles (RLVs), the large range of flight envelope will not only result in high nonlinearities, strong coupling and fast time-varying characteristics of the attitude dynamics, but also result in great uncertainties in the atmospheric density, aerodynamic coefficients and environmental disturbances, etc.
