Publications by authors named "Paulo Fernandes DA Silva Junior"
In this paper, an architecture of an electrical equivalence pyranometer with analog control of the temperature difference is presented. The classical electrical equivalence pyranometer employs a Wheatstone bridge with a feedback amplifier to keep the sensor operating at a constant temperature to estimate the incident radiation through the sensor thermal balance employing the electrical equivalence principal. However, this architecture presents limitations under ambient temperature variation, such as sensitivity variation.
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- This work introduces a new method for tracking rocket flights and determining their impact points using telemetry data and a slant-range device.
- By combining angular data from a telemetry antenna with distance measurements from the slant-range device, accurate position components were derived during an actual flight.
- The method showed that the impact point identified through this combined approach was 237.64 meters closer to the actual impact compared to traditional radar tracking, indicating a more efficient search area for payload recovery.
In this paper, a bioinspired method in the magnetic field memory of the bees, applied in a rover of precision pollination, is presented. The method calculates sharpness features by entropy and variance of the Laplacian of images segmented by color in the HSV system in real-time. A complementary positioning method based on area feature extraction between active markers was developed, analyzing color characteristics, noise, and vibrations of the probe in time and frequency, through the lateral image of the probe.
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