ISOCANDELA DIAGRAM ANALYSIS OF PAPI LIGHTS WITH VERTICAL MICROSTEPPING METHOD USING BH1750 SENSOR
One of the most important lights used in airport runways is the Precision Approach Path Indicator (PAPI). The PAPI lights serve as a visual aid to the pilot to ensure the aircraft has the proper landing angle. To ensure the safety and security of aircraft landing, PAPI lights need to be calibrate...
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| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/50580 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | One of the most important lights used in airport runways is the Precision
Approach Path Indicator (PAPI). The PAPI lights serve as a visual aid to the pilot
to ensure the aircraft has the proper landing angle. To ensure the safety and security
of aircraft landing, PAPI lights need to be calibrated periodically. In the PAPI lamp
calibration, there are two main aspects that must be fulfilled, i.e. the elevation angle
and the distribution of light intensity. This distribution of light intensity is
represented in the form of an isocandella diagram. The photometric criteria that
must be met in an isocandela diagram are the horizontal angle range of -5
o
to 5
o
and
vertical -5
o
to 5o
and range of light intensity from 0-200,000 cd. The method
currently used to measure the isocandela diagram of PAPI lamps is the flight check.
In this final project, we propose another method to measure the isocandela diagram
of PAPI lamps, i.e. using a PAPI lamp calibration instrument consisting of several
BH1750 light sensors with the vertical microstepping method. The implementation
of the method used is divided into several stages. First, the photometric criteria of
the PAPI lamp isocandela diagram were studied. From the photometric criteria, the
key to measuring the isocandela diagram is obtained, i.e. the zero point reference
of the calibration instrument with the PAPI lamp must be the same and be at the
center point of the PAPI lamp. Second, the configuration of the distance as well as
the measuring point of the instrument is determined. Third, the data of light
intensity measurement from BH1750 in the form of lux is processed into isocandela
diagrams. Then, the reconstruction of the isocandela diagram used kriging
interpolation. Through testing the measurement of the isocandela diagram using the
PAPI lamp minature, the interpolated isocandela diagram was obtained which was
in accordance with the standard isocandela diagram of Manual of Standards Part
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