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12
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vol 63 / December, 2020
Article

DOI 10.17586/0021-3454-2018-61-9-745-750

UDC 535:631.373

PECULIARITIES OF DESIGNING OF ON-BOARD PULSE LASER ALTIMETER TO MEASURE THE HEIGHT ABOVE THE SEA SURFACE

. Nguyen Tung Duc
ITMO University, Saint Petersburg, 197101, Russian Federation; postgraduate


. Nguyen Van Truong
ITMO University, Saint Petersburg, 197101, Russian Federation; postgraduate


E. G. Lebedko
ITMO University, Saint Petersburg, 197101, Russian Federation; Professor


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Abstract. Peculiarities of designing pulse laser altimeter to measure the aircraft height above the sea surface are considered. An optimal receiving system used for surface-reflected signal detection takes into account the random characteristics of the surface at various angles of sounding laser beam incidence depending on the aircraft roll and pitch as well as random amplitude of reflected pulses. Recommendations are formulated for choice of sounding pulse repetition rate and emitted energy at a given time constant of height measurement.  
Keywords: sea surface, reflectance characteristics, probability density, sounding pulse repetition rate, decision making rule, signal energy

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