GPS Satellite Surveying in Developing Countries - A Review

al-Kadi, Ibrahim A.

doi:10.1016/s1018-3639(18)30863-8

Cited by 2 publications

(3 citation statements)

References 20 publications

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“…Nowadays, the use of the Global Positioning System (GPS) cuts across various sectors, including location tracking [1][2][3], estimating travel routes [4][5][6], and environment pollution mapping [7][8][9]. The combination of the information on position and altitude is useful for geophysics exploration, especially gravity and magnetic method, land mapping [10][11][12], and architecture design [13][14][15]. However, its application is still limited.…”

Section: Introductionmentioning

confidence: 99%

Altitude Measurement in Topographic Mapping Based on Barometric Pressure, Temperature, and Humidity using Neural Network

Suseno

Setyawan

2023

int.jour.sci.res.mana

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The Global Positioning System (GPS) has important information and cuts across various sectors. The position of a particular spot is usually stated in coordinates (2D or 3D) based on a specific coordinate system. Simple methods of altitude measuring have been developed in topographic mapping. This study developed an altitude measurement tool using a BMP180 sensor and DHT22 sensor, with calculation from an artificial neural network (ANN) result, based on the influence of the amount of barometric pressure, temperature, and humidity. Output can be displayed through an LCD and a smartphone application, enabled through Bluetooth. The ANN for obtaining altitude values was trained using temperature, humidity, and barometric pressure inputs from places with known high values. The training was conducted in MATLAB. Afterward, the ANN test program Arduino used normalization, denormalization, activation, weight, and bias components obtained from the selected ANN architecture. The Arduino test program showed high output values similar to those from the ANN test, indicating that the test program result is correct. The test results obtained an average error of 6.36%. The advantage of this tool is that it can perform height calculations quickly and easily. Moreover, the tool can further be developed, as training the ANN in various places with more variations in position, height, weather conditions, or height can yield better results.

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Section: Introductionmentioning

confidence: 99%

Altitude Measurement in Topographic Mapping Based on Barometric Pressure, Temperature, and Humidity using Neural Network

Suseno

Setyawan

2023

int.jour.sci.res.mana

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“…The majority of the users of GPS data employ it effectively in different engineering and geodetic projects as an alternate solution to traditional surveying methods [1]. In order to achieve a high degree of precision in terms of location, the use of differential positioning techniques is required in field measurements and in the processing of GPS data using License postprocessing or Commercial software employed by GPS experts [2].…”

Section: Introductionmentioning

confidence: 99%

“…In order to achieve a high degree of precision in terms of location, the use of differential positioning techniques is required in field measurements and in the processing of GPS data using License postprocessing or Commercial software employed by GPS experts [2]. This software required user training and experience [1]. As an alternative option, a number of agencies have therefore established user-friendly web-based services to calculate high accuracy positioning [3].…”

Section: Introductionmentioning

confidence: 99%

Accuracy Assessment of a Variety of GPS Data Processing, Online Services and Software

Mohammed

Ataiwe

Sharaa

2021

GaEE

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The processing of GPS observations in precise positioning is complex and requires professional surveyors since it must be carried out after each static measurement. In GPS network adjustment, the obtaining of the correct coordinates of the determined point is possible after determining the components of GPS vectors and aligning the networks of these vectors, while PPP requires the availability of precise products for the reference satellites orbits and clock. For that reason, surveyors can take advantage of free online GPS data processing. In this paper, the authors compare the results obtained from different sources of free online GPS data processing (AUSPOS, OPUS, CenterPoint RTX, APPS, MagicGNSS, CSRS-PPP, GAPS, and SCOUT) in terms of their accuracy, availability, and operation. This is then compared with free GPS processing software (gLAB and RTKLIB), and finally with commercial software (TBC Trimble Business Center). The results show that online processing services are more accurate than offline processing software, which indicates the strength of their algorithms and processes. The CSRS-PPP online service had the best results. The difference between the relative solution of AUSPOS and OPUS, and CSRS-PPP is insignificant.

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GPS Satellite Surveying in Developing Countries - A Review

Cited by 2 publications

References 20 publications

Altitude Measurement in Topographic Mapping Based on Barometric Pressure, Temperature, and Humidity using Neural Network

Altitude Measurement in Topographic Mapping Based on Barometric Pressure, Temperature, and Humidity using Neural Network

Accuracy Assessment of a Variety of GPS Data Processing, Online Services and Software

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