# A Study of Cislunar-Based Small Satellite Constellations with Sustainable Autonomy
## 6 Discussions
These variations will be so significant in the real-time operations that they will have ground control in complete trust that the constellation health is secured and in good shape altogether. Figure 6,d will have the same impact but in a different parametric orientation. The Radial projections offered by Figure 6 will have an impact suggesting the major operation shifts, if any, when the anomalies in orbit show up. In the figure, it shows that there are slight variations from satellite to satellite but under a minor range of deviation. Hence, these changes are considered normal and can be highly varying in the case of unknown and critical anomalies. Figure 6 shows the variation of the ground parameters (Azimuth and Elevation) with RAAN. This is crucial from the astrodynamics point of view, as RAAN is one orbital parameter that is impacted by the \(J_{2}\) perturbations (which are included in the simulations), and it needs to be analyzed with the ground parameters of the approaching ground stations to be ready to deliver the data autonomously while aligning itself when needed. On the ground side of the analysis, Figure 6e,f are the best forms of ground parameter observations. The reason is that these parameters influence the overall orientation and functioning of the constellation in a compact and resourceful manner. Figure 6e shows the Azimuth and Elevation angles of satellites one and eight approaching the ground stations. The confined pattern shown is the orientation of the satellites that signifies the major changes in their propagation with respect to the ground stations that are being targeted for data delivery. There can be some major differences in this orientation when the satellites are not perfectly aligned to deliver the data, and the ground control in synergy with the onboard autonomy can take action, if needed, to avoid disruption in the data missing out of delivery. The strategies mentioned in Reference [16] are one of the assets to determine and signify the utility of the autonomy in such situations efficiently. Figure 6f is another aspect of the ground orientation with other ground stations in different locations. The pattern here is different as the orientation of those approaching satellites is different from the ground station locations. These are the parametric changes that impact the overall effectiveness of the constellation operations. This can be observed that New Delhi and Antarctica are poles apart, and the orientation of the satellites with respect to these ground stations can be seen in a single frame of operations in a defined pattern autonomously. This is one of the significant contributions of this multi-parametric autonomous analysis, which redefines the approach towards monitoring and utilizing the parameters precisely as needed. This can be more aptly observed through a determined approach in real time and maximize the potential of operations in the Cislunar space. Section 5.1.2 includes the Monte Carlo analysis of collision avoidance with debris and the other missions in the vicinity. This is portrayed in Figure 7 in three different forms, density of debris, and a chance (probability) of collision. The first one, Figure 7a, is the most fairly distributed operation. Figure 7b gives intensively busy operations with an overall chance of a probable collision. Figure 7c comes through when operations are normal, but still, some areas of it define certain conflicts and near passes from one another or the debris. The constellations designed are shown in all these three scenarios and have adapted feasibility in all these three cases. The reason is that autonomous operations help the constellation navigate significantly out of the dangers when the nearest approaches are observed. Monte Carlo analysis with two cases of 6000 and 10,000 states was performed to observe the changes from a number of state observations in a given instance and their precision in maintaining the true state.