struct

Kozai::Frames::LookAngles

Inherits Struct < Value < Object

Where a satellite is as seen from a place on the ground.

Constructors

new(azimuth : Float64, elevation : Float64, range_km : Float64, range_rate_km_s : Float64)

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Instance methods

above?(minimum_elevation : Float64) : Bool

Whether the satellite is at least minimum_elevation degrees up.

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azimuth

Azimuth in degrees, clockwise from true north, in 0...360.

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elevation

Elevation above the horizon in degrees, in -90..90.

NOTE: geometric by default, apparent if the station asked for refraction. The two differ by 0.57 degrees at the horizon and by under a tenth of a degree above ten. See Observer#refraction? and Frames.refraction_degrees.

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range_km

Distance from the observer in kilometres.

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range_rate_km_s

Rate of change of range in kilometres per second.

Positive while the satellite is receding. This is what Doppler uses.

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visible?

Whether the satellite is above the horizon.

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