Analysis 1. OVERVIEW
1.1 Purpose of the Document
This document describes the results of the Mission Analysis tasks performed for the Perun 1p mission. This includes analysis of the orbit, mission phases, operational concept and the measurement collection and downlink strategy.

1.2 Mission Description
The Perun 1p mission is being proposed to measure orbit stability during the lifetime of the mission, solar panel use for determining orientation by Sun, two-way communication connecting users at different ground locations, two cameras for self-photographs, use for radio amateur communication.

1.2.1 Mission Purpose
The primary objective of the Perun 1p mission is to obtain information about drag force that would be of relevance for de-orbiting, accuracy with which its orientation could be determined by using solar panels, radio amateur communication, two selfie cameras to show Perun 1p and the background space, education in satellite communication in schools and universities

1.2.2 Platform Summary Description
The mechanical platform consists of a cube structure 0.1 x 0.1 x 0.1 cm with deployable UHF/VHF antennas and two selfie cameras.
                                             

1.2.3 Payload Summary Description
CubeSat carries a two-way radio communication module for connecting two, or several, points of communication on the ground. Payload also includes motion sensor to for orbit analysis.

1.2.4 Mission Phases Description
1.2.4.1 LEOP
The LEOP phase includes the launch and initial configuration of the spacecraft. This includes
• Launch
• Antenna’s deployment
• Initial acquisition
• Unit switch on
The separation of the spacecraft from the launcher is detected automatically by the separation straps and this triggers an automatic sequence to deploy antennas and then put the system into Acquisition Mode. Upon successful initialisation operation of the system is testing.

1.2.4.2 Commissioning
The commissioning phase will last for up to 2 months after launch. In this phase any launcher orbit injection errors will be determined, and the operational orbit with new parameters used for the mission. Platform commissioning activities will be performed to confirm the correct operation of the platform equipment.

1.2.4.3 Operation
In the operational phase the spacecraft will carry out its predetermined tasks.

1.2.4.4 End Of Life
At End-of Life the spacecraft orbit altitude must be removed from its operational orbit. The altitude must be reduced to ensure that the time before re-entry into Earth’s atmosphere is less than 2 years after the end of the operational phase