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112 total results found

Killswitches

ᴾᵒCat: Structure & Subsystems Mechanisms

The satellite has 2 killswitches located on the bottom PCB. These are connected in series, allowing for redundancy in case one of them fails. Figure 1: Killswitches in Bottom PCB During operations where the satellite needs to be disconnected, the switches s...

Mission Phases

ᴾᵒCat Operations

The mission is segmented into five distinct phases: 1) Prelaunch, 2) LEOP, 3) In-orbit Commissioning, 4) Operations, and 5) Post-mission. Throughout each phase, various procedures are carried out, either commanded from the ground or autonomously performed by t...

Mission Timelines

ᴾᵒCat Operations

Mission phases are divided into Prelaunch, LEOP, In-orbit Commissioning, Operations, and Post-mission. The mission phases and the expected duration of each of them can be observed in the following picture. Activation sequence The activation sequence encompass...

Operational Database

ᴾᵒCat Operations

The operational database contains all relevant telemetry and telecommand information. For detailed insights, please refer to the attached file PoCat TM_TC DATABASE.xlsx. This Excel document contains a list of all the telemetry data and telecommands that allow ...

RFI-Dedicated Thread

ᴾᵒCat: RFI K-Band Payload RFI-5G Design

RFI Thread Introduction Like many other subsystems, the Payload is a self-contained sub-system and so it has its own FreeRTOS Thread. This thread is concieved to be able to control each of the two RFI monitoring payloads. As an overview, the thread is structur...

Operational Procedures

ᴾᵒCat Operations

Operational procedures list This section provides a set of routine and recommended procedures to be followed during the operations of the satellite, which can take one or several consecutive passes. These procedures are designed to ensure an efficient manageme...

RFI-5G FE-Bottom SSV

ᴾᵒCat: RFI K-Band Payload Test

Test Description and Objectives The objective of this test is to validate the correct operations of the P/L2 K-band RFI monitoring payload board layout, the quality of the data acquisition process, as well as the deployment and operation metrics of the Helical...

Helicoils

ᴾᵒCat Procedures Assembly & Integration

Materials This are the necessary materials to install helicoils: Instructions The initial step involves taking tool A and using it to create a base with the utensil, enabling the subsequent screwing of the nails. Subsequently, we'll affix a helicoil onto too...

RFI-5G FE-Top SSV

ᴾᵒCat: RFI K-Band Payload Test

Document Scope The objective of this document is to detail the procedures, results and conclusions to properly test at subsystem level the RFI-5G front-end top board. Several parts will be tested: Test of the LNA chain Test of the LO chain Test of the Front-E...

COMMS Antenna Refurbishment

ᴾᵒCat Procedures Assembly & Integration

Materials PocketQube body: Should already contain all the components of the spacecraft, inluding all the subsystem boards and the battery. Lateral board with antenna: The antenna must be already soldered and must have space to add a resistor in the opposite s...

Assembly

ᴾᵒCat Procedures

INTRODUCTION This document reports the assembly and integration specifications, and includes the step-by-step procedures for the PocketQube "PAYLOAD K-BAND, L_BAND, VGA". REQUIREMENTS TO BE VERIFIED Req. Id Requirement title Requirement text  ...

Introduction

Federated Satellite System Experiment

The concept of FSS was introduced by Professor A. Golkar in [1]. FSS are spacecraft that engage in opportunistic collaboration throughout their mission lifecycle, allowing them to share resources, capabilities, and data in a manner that enhances their overall...

K-Band VCO Calibration Procedure

ᴾᵒCat: RFI K-Band Payload Test

Objective Measure the frequency response of the VCO and characterize it. Steps to follow Turn on equipment Spectrum analizer Power supply Configure to desired parameters Spectrum analizer Set center frequency in the middle of VCO output band (6250MHz)...

Front-end Gain calibration Procedure

ᴾᵒCat: RFI K-Band Payload Test

Objective Measure the total system gain at the output of the RSSI and equalize it. Steps to follow Turn on equipment Spectrum analizer Power supply Configure to desired parameters Spectrum analizer Set center frequency in the middle of VCO output band ...

Opporunistic Service Availability Dissemination Protocol

Federated Satellite System Experiment Protocols

State of the Art The Opporunistic Service Availability Dissemination Protocol (OSADP) generates resource publications and transmits it periodically whenever the resource is available. These packets are broadcast using User Datagram Protocol (UDP), as it is non...

Federated Deployment Control Protocol

Federated Satellite System Experiment Protocols

State of the Art The Federation Deployment Control Protocol (FeDeCoP) aims to manage the formation, maintenance, and dissolution of federations. As satellite networks become more complex and resource management grows increasingly critical, FeDeCoP provides a s...

K-band Noise floor characterization Procedure

ᴾᵒCat: RFI K-Band Payload Test

Objective Measure the RSSI obtained though all the 1GHz band with only noise and characterize it. Steps to follow Turn on equipment Spectrum analizer Power supply Configure to desired parameters Spectrum analizer Set center frequency in the middle of ...

K-band CW characterization Procedure

ᴾᵒCat: RFI K-Band Payload Test

Objective Measure the RSSI obtained though all the 1GHz band when inputting a CW and characterize it. Steps to follow Turn on equipment Spectrum analizer Signal generator Power supply Configure to desired parameters Spectrum analizer Set center frequen...

P/L3 Envelope Detection characterization Procedure

ᴾᵒCat: RFI K-Band Payload Test

Objective Characterize the capacity of the RFI Monitoring system to detect signals by Envelope Detection method. Steps to follow Turn on equipment Power supply Signal generator Configure to desired parameters Power supply Set Voltage to 3.3V Set curren...

P/L3 Statistical pulsed signal characterization Procedure

ᴾᵒCat: RFI K-Band Payload Test

Objectives Characterize the capacity of the RFI Monitoring system to detect pulsed signals by statistical algorithms. Steps to follow Turn on equipment Power supply Signal generator Configure to desired parameters Power supply Set Voltage to 3.3V Set c...