Abstract of Thesis presented at COPPE/UFRJ as a partial fulfillment of the requirements for the degree of Master of Science (M.Sc.)

Development of a Digital Processing Fluxgate Magnetometer for Geophysical Instrumentation

Plínio Rodrigues Lima

July/2003

Advisors:

Luiz Pereira Calôba Luiz Carlos Carvalho Bentyosef

Department:

Eletrical Engineering

      This work shows studies for the development of a fluxgate magnetometer using digital signal processing. Initially specific characteristics of the geomagnetic instrumentation are presented, addressed for researches on geomagnetism and mainly for magnetic observatories. A revision on the theory of fluxgate magnetometers is discussed, taking as reference the analogical control electronics, comparing it with the digital one. In the last part of this monography is described the main hardware and software proceedings involved in the results of these simulations, using the commercial selected DSP kit.