Detecção automática de cenários internos e externos utilizando mensagens NMEA de receptores GNSS

Pissardini, Rodrigo de Sousa; Fonseca, Edvaldo Simões da

doi:10.3895/rbgeo.v6n4.8269

Cited by 3 publications

(2 citation statements)

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“…The sentence GGA of the NMEA protocol provides, together with the position, the number of satellites visible at each reading and also the dilution of the horizontal precision (HDOP -Horizontal dilution of precision) or dilution of the precision of the horizontal measurements (latitude and longitude). The HDOP observed (Table 1) in the study is a relative indicator of the good planimetric precision of the prototype since the values provided by the NMEA protocol in the study was close to zero, and, according to Pissardini & Fonseca Jr (2018), adequate values for the dilution of precision should be below 5. In addition, the number of satellites visible at the collection moment was shown to collaborate with the better quality of the coordinates collected.…”

Section: Resultsmentioning

confidence: 84%

Construction of a prototype for tracking dogs in the streets using Arduino

Paula

Secco

Molento

et al. 2020

AVB

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Article history One of the motives that compromises the welfare of dogs is a lack of understanding of their needs and of the natural behavior of the species. The use of telemetry as a means of indirect observation is emergent and has provided a significant increase in scientific perspectives. However, its use is still limited for domestic animals despite the high potential for applying the technology in this area. Thus, the objective of this project was to construct a prototype using telemetry via satellite, of reduced size and low cost that allows for the monitoring of dogs in the streets. The prototype of the tracker was constructed containing a Pro Mini Arduino with an ATmega328 micro-controller, a GPS module for the Arduino, GPS u-blox NEO-6M and a Micro Sd reading/taping module for the Arduino. The final weight of the prototype was 197.4±101.5 grams with the battery and is attached to the collar. The dispersion of the planimetric coordinates around the mean was 2.7 meters, which increased to 10.9 meters when the height factor was added to the dispersion. It was concluded that with the size and weight of the prototype used it was possible to evaluate medium to large-sized dogs in the street. The prototype showed the precision necessary to read the coordinates collected for projects aimed at monitoring dogs in the streets, since these do not demand millimetric precision and accuracy.

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Section: Resultsmentioning

confidence: 84%

Construction of a prototype for tracking dogs in the streets using Arduino

Paula

Secco

Molento

et al. 2020

AVB

View full text Add to dashboard Cite

show abstract

“…) eOrdóñez et al (2012).Na Figura 3 é possível visualizar a influência do dossel florestal na redução do número de satélites visíveis obtidos por três dos receptores avaliados (R3, R4 e R5). A presença de troncos, galhos e folhas impossibilita a condição ideal de operação, concordando com as proposições dePissardini & Fonseca Jr. (2018), ao afirmarem que o número de satélites visíveis depende diretamente do ambiente presente entre o centro de fase da antena do receptor e o centro de fase da antena dos satélites, pois este pode impedir a propagação total ou parcial do sinal GNSS emitido ao receptor.…”

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