Browsing by Autor "Mishel Cuiza"

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Comparison Between ERA5 Cloud Parameters and Rainfall Rate in Madrid
(2024) Ana Benarroch; Gustavo A. Siles; Mishel Cuiza; José Manuel Riera
This ongoing study, conducted at UPM, investigates the relationship between rainfall rate and cloud parameters, using data sourced from ERA5 and experimental rainfall rate measurements collected with a disdrometer. The findings presented in this paper have been obtained using a comprehensive dataset spanning 6 years, including total cloud liquid water, cloud base height, total cloud cover, and rainfall rate. The statistical analysis presented comprises cumulative distributions, histograms, as well as scatter plots of the ERA5 cloud parameters against both the hourly average and maximum hourly rainfall rates. It has been found that low values of total cloud liquid water and cloud base height are more probable with simultaneous rain occurrence, whereas total cloud cover yields values equal or close to one, which is its highest value.
Development of a picosatellite for academic purposes for emerging countries
(2025) Jorge Soliz; Alejandro Jaimes; Coral Ovando; Mishel Cuiza
In Bolivia, like in most Latin American countries space projects are increasing, and this phenomenon leads to the need to train new professionals in space issues. For this reason, universities and academic centres require specialised equipment in this area. Unfortunately, this equipment has high costs (equipment such as CubeSat kit, educational satellites, satellite kit, etc.). Due to this, the design and construction of an educational and low-cost picosatellite kit with its respective signal reception equipment were necessary. The kit consists of an educational picosatellite, with a ground station, that is intended to become the perfect tool for practical training in space engineering at different levels. Potential users range from primary schools, where STEM skills development is pursued, to university engineering courses and, even, engineering companies. Additionally, this real satellite simulator offers a wide variety of educational activities without compromising cost.
Evaluation of total precipitation from ERA5-Land reanalysis for rain attenuation studies
(2024) Mishel Cuiza; Gustavo A. Siles
Propagation researchers continuously seek rainfall data to enhance rain attenuation modeling. This paper compares 60-to-1 minute converted long-term rainfall statistics from ERA5-Land reanalysis with experimental measurements from two rain sensors and ITU-R predictions for a specific region in Bolivia. Despite improved spatial resolution, discrepancies arise due to time resolution and grid averaging.
Implementation of a ground station to encourage space science in developing countries
(2024) Jorge Soliz; Mishel Cuiza; Peter Carvajal
This paper shows the implementation of a ground station (GS) at the Bolivian Private University, which aims, among other objectives, to promote space science and promote education in this field in a country like Bolivia where this type of technologies are not widely known due to the economic costs. involved. The GS, located at this institution, not only provides access to crucial space data and encourages scientific research at the university, but also establishes a strong connection between the university and local schools for the dissemination of space science. The presence of the GS at the Bolivian Private University offers an ideal platform to carry out outreach activities in collaboration with schools. These initiatives encompass educational talks, interactive workshops and guided tours, as evidenced in this work, thus giving school students the opportunity to explore and understand the fascinating field of space science. In this way, the GS becomes a valuable educational resource that inspires younger generations to become interested and participate in space-related disciplines. Furthermore, this collaboration between the university and schools will not only enrich the educational experience but will also contribute to the training of future professionals in space science. By participating in coordinated activities with the university staff responsible for the GS, school students can receive early guidance in scientific and technological careers, thus encouraging the development of local talent in these fields and in STEM (science, technology, engineering and math) disciplines.
LA IMPRESIÓN 3D EN LA CREACIÓN DE ESTRUCTURAS DE CUBESATS FRENTE A LOS MATERIALES CONVENCIONALES
(2024) Jorge Soliz; Mishel Cuiza
Con la creación del CubeSat se marcó el inicio de un creciente interés en la exploración de tecnologías espaciales. El CubeSat es una estandarización que tiene el propósito de reducir costos y tiempos de producción de satélites, permitiendo el acceso al espacio a universidades o grupos de investigación que cuentan con recursos científicos para experimentar nuevas tecnologías y facilitar la investigación aeroespacial. A lo largo de los años, se han mejorado aspectos clave, como la miniaturización de componentes, sistemas de propulsión, eficiencia energética y comunicación. Sin embargo, persisten desafíos en la robustez espacial, costos y longevidad operativa, por lo que la selección adecuada de materiales es esencial porque deben soportar las condiciones extremas del espacio. La impresión 3D ha ganado protagonismo en la industria espacial, aunque, se ha explorado su potencial en aplicaciones aeroespaciales, su adopción en CubeSats todavía enfrenta desafíos. Mediante una revisión sistemática de literatura se buscó comprender el impacto de la impresión 3D en las estructuras de CubeSats frente a materiales convencionales, comparando sus propiedades clave frente a las condiciones del espacio. Los resultados destacaron la flexibilidad y personalización que ofrece la fabricación tridimensional, pero también señalaron las ventajas de los materiales convencionales en resistencia mecánica. La fabricación aditiva está transformando la industria espacial, la elección entre la impresión 3D y materiales clásicos dependerá de las necesidades de la misión espacial.