Publication:
Design of a low SWaP dual-band radiometer for UAS remote sensing applications

No Thumbnail Available
Authors
Novoa García, María Celeste
Embargoed Until
Advisor
Rodríguez-Solís, Rafael A.
College
College of Engineering
Department
Department of Electrical and Computer Engineering
Degree Level
M.S.
Publisher
Date
2024-05-09
Abstract
This work presents the design of a dual-band (L/Ka) receiver for a Dicke radiometer to measure Sea surface salinity. The analog front-end was designed and characterized. The system noise figure was found to be 0.5118 dB, with a gain of 49.1235 dB and bandwidth of 136 MHz around 1.41 GHz, and the system noise figure was found to be 1.7815 dB, with a gain of 74 dB and bandwidth of 8 GHz around 31.5 GHz. The digital back-end was implemented on a ZYBO Z7 7020 platform. The digital receiver reads the voltages for the L-band and K-band detectors, and the system reference, performs the switching between bands and the reference signal for the Dicke operation, performs the integration, calculates the brightness temperature, and stores the brightness temperature data, along with the date, time, and position data, on an SD card.

Este trabajo presenta el diseño de un receptor de doble banda (L/Ka) para un radiómetro Dicke para medir la salinidad de la superficie del mar. Se diseñó y caracterizó el front-end analógico. Se encontró que la figura de ruido del sistema era de 0.5118 dB, con una ganancia de 49.1235 dB y un ancho de banda de 136 MHz alrededor de 1.41 GHz, y la figura de ruido del sistema era de 1.7815 dB, con una ganancia alrededor de 74 dB y un ancho de banda de 8 GHz alrededor de 31.5 GHz. El back-end digital se implementó en una plataforma ZYBO Z7 7020. El receptor digital lee los voltajes para los detectores de banda L y banda K, y la referencia del sistema, realiza la conmutación entre bandas y la señal de referencia para la operación Dicke, realiza la integración, calcula y almacena la temperatura de brillo, junto con los datos de fecha, hora y posición, en una tarjeta SD.
Keywords
Microwave remote sensing,
Radiometer,
UAS,
Sea surface salinity,
L-Band
Usage Rights
Except where otherwise noted, this item’s license is described as Attribution-NonCommercial-NoDerivatives 4.0 International
Cite
Novoa García, M. C. (2024). Design of a low SWaP dual-band radiometer for UAS remote sensing applications [Thesis]. Retrieved from https://hdl.handle.net/20.500.11801/3683