## 4 Discussion
### Discussion of the Results of the Analysis for a Variable Weight of the Satellite
 }} & \multicolumn{3}{c}{**Frontal**} & \multicolumn{2}{c}{**LOS of**} & \multicolumn{2}{c}{**Drop in**} & \multicolumn{2}{c}{**Total**} & \multicolumn{1}{c}{**Total**} \\  & **Fuel** & **Specific** & **Surface** & **Drag** & **Loss of** & **Altitude** & **Drop in** & **Required** & **Required** \\  & **Weight** & **Impulse** & **of the** & **Force** & **Orbital** & **in** & **in Six** & **Weight of** & **Weight of** \\  & **M\({}_{\mathrm{f}}\) [kg]** & **I\({}_{\mathrm{sp}}\) [s]** & **Satellite** & **F\({}_{\mathrm{D}}\) [N]** & **Energy** & **One** & **Months** & **Fuel** & **Fuel** \\  & & & **A [m\({}^{2}\)]** & & & \(\Delta\)**E [j]** & **Month** & **\(\Delta\)Mtotal** & **\(\Delta\)m [kg]** & \(\Delta\)**m total** \\  & & & & & & \(\Delta\)**h [m]** & & **[m]** & & **[kg]** \\ \hline
16 & 0.50 & 235 & 0.04 & 0.00000270 & 54,613.72 & \(-\)402 & \(-\)2412 & 0.077 & 0.461 \\
17 & 0.50 & 240 & 0.04 & 0.00000270 & 54,613.72 & \(-\)378 & \(-\)2270 & 0.080 & 0.480 \\
18 & 0.50 & 250 & 0.04 & 0.00000270 & 54,613.72 & \(-\)357 & \(-\)2144 & 0.081 &For satellites weighing 8 kg, a swath width of 15 km was adopted, which corresponds to rather basic sensors with limited resolution. For satellites weighing 18 kg, the swath width increases to 21 km. This is justified by the application of a more advanced telescope with better optics, e.g., the Multiscape100 sensor (its parameters are provided in Table 6), which increases the field of vision. The increase in swath width by 0.5-1 km per each additional kilogram of weight reflects the possibility to install better optical instruments on heavier satellites. For example, large telescopes offer better observation capacity, so the value increases with the increase in weight of the satellite. Swath width depends on the quality and type of the installed telescope. The optical systems installed in satellites weighing 8-18 kg may offer a swath width ranging from 15 to 30 km. However, values of approx. 20 km are typical for satellites in this weight class equipped with high resolution sensors, such as Multiscape100 (its parameters are presented in Table 6). The results of the conducted analysis revealed that the duration of flight over the area of interest ranges from 2.44 s to 3.42 s depending on the parameters. This is consistent with the short periods of observation that are characteristic for low orbits. One may compare these values to those of commercial Earth observation satellites that may monitor a given area for several to more than ten seconds during one flight on low orbits. This difference results from the altitude of the orbit, the satellite's velocity (approx. 7.8 \(\frac{\mathrm{km}}{\mathrm{s}}\) on LEO), the width of the vision of the sensor, the trajectory of the orbit in reference to the observed area, and the ability of the satellite to change the orientation of the platform to extend the observation time outside the direct path of flight. These satellites also use task queueing systems, where clients submit their demands for imaging, and the operator sets the priorities and schedules flights. Limitations, such as the number of passes, weather conditions, or increasing demand, are compensated for by advanced planning systems and satellite constellations.