Publication: Simulador simple de OBDH (On Board Data Handling) basado en software defined radio
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2015-09-23
Defense date
2015-10-08
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Abstract
Históricamente las telecomunicaciones siempre han sido una parte fundamental del desarrollo en numerosos ámbitos (social, defensa, tecnológico, económico…). Con el inicio de la era espacial, las comunicaciones dieron un salto cualitvo en las comunicaciones a nivel mundial. Toda esa tecnología se basa en el desarrollo de los satélites y en ese proceso son parte fundamental los simuladores. En ese punto se enmarca este Trabajo Fin de Grado.
En este documento se presenta una solución de un simulador de manejo de datos de a bordo (On-Board Data Handling, OBDH) que consiste en la implementación de once servicios que emulan el funcionamiento de algunas funciones del satélite. Se llevan a cabo funciones de asentimiento y reporte del estado de ejecución, simulación de datos de housekeeping y monitorización (frecuencia y temperatura del microprocesador, y estado de los instrumentos), generación de reporte de eventos con distintos niveles de gravedad, simulación y gestión de la memoria, sistema de tiempos del satélite, ejecución de telecomandos de manera automática de la lista de planificación, reporte del estado de la conexión y reinicio del sistema.
Además, se simulan dos instrumentos: un sensor de temperatura y un instrumento de imágenes. Se pueden modificar distintos parámetros referentes a los instrumentos y, reportar los datos de temperatura y las imágenes. Para la implementación del programa se emplea LabVIEW como herramienta de programación visual que permite emplear periféricos de comunicación radio.
Este proyecto emula el funcionamiento de un satélite y se complementa con otros dos que simulan la transmisión de telecomandos y la recepción de telemetrías en la estación base. Para la comunicación con la estación base se emplea la tecnología SDR (Software Defined Radio) junto con los periféricos USRP-2920 de National Instruments.
Historically, telecommunications has always been a fundamental part of development in many areas (social, defense, technological, economic...). With the start of the space age, communications took a quantum leap in communications worldwide. All this technology is based on the development of the satellites and in this process simulators are fundamental. At that point this Final Degree Work is framed. In this paper, a solution of an On-Board Data Handling (OBDH) consisting of eleven implementation services that emulate the operation of some functions of the satellite is presented. Functions are performed as assent and execution status report, simulation and monitoring data housekeeping (frequency and temperature microprocessor and instrument), events report generation with different gravity levels, simulation and management memory, time satellite system, automatic telecommand generation of the schedule list, report connection status and reboot. In addition, two instruments are simulated: a temperature sensor and an image instrument. It can modify different parameters relating to the instruments and report temperature data and images. For the program implemetation, LabVIEW is used as a visual programming tool that allows the use of radio communication peripherals. This project emulates the operation of a satellite and is complemented by two others Final Degree Works that simulate remote telecommand transmission and telemetry reception in the ground station. For communication with the base station SDR (Software Defined Radio) technology is used together with the National Instruments USRP-2920 peripherals.
Historically, telecommunications has always been a fundamental part of development in many areas (social, defense, technological, economic...). With the start of the space age, communications took a quantum leap in communications worldwide. All this technology is based on the development of the satellites and in this process simulators are fundamental. At that point this Final Degree Work is framed. In this paper, a solution of an On-Board Data Handling (OBDH) consisting of eleven implementation services that emulate the operation of some functions of the satellite is presented. Functions are performed as assent and execution status report, simulation and monitoring data housekeeping (frequency and temperature microprocessor and instrument), events report generation with different gravity levels, simulation and management memory, time satellite system, automatic telecommand generation of the schedule list, report connection status and reboot. In addition, two instruments are simulated: a temperature sensor and an image instrument. It can modify different parameters relating to the instruments and report temperature data and images. For the program implemetation, LabVIEW is used as a visual programming tool that allows the use of radio communication peripherals. This project emulates the operation of a satellite and is complemented by two others Final Degree Works that simulate remote telecommand transmission and telemetry reception in the ground station. For communication with the base station SDR (Software Defined Radio) technology is used together with the National Instruments USRP-2920 peripherals.
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Keywords
Telecomunicaciones, Comunicaciones vía satélite, Simuladores, On-Board Data Handling (OBDH), Telemetrías, Telecommunications, Satellite communications, Simulators, Telemetry