FIELD: secondary radar systems. SUBSTANCE: altimeter has keyboard assembly 1, three code converters 2,17,19, dimension converter 3, six memory resistors 4,6,10,20,22,25, seven shift registers 8,9,11,21,23,26,31, digital indicator 7, multiplexer 12, two adders 13,29, digital comparator 14, addressing unit 15, read-only memory 16, multiplier 18, two OR gates 24,32, main storage 27, process status analyzer 28, control unit 30. Aerodrome altitude is calculated by the piecewise approximation method. The trial-and error method is used for interpolation using barometric reduction tables. EFFECT: increased accuracy of altitude measurements. 3 dwg
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