Meine alten Sachen aus RALV
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55
phi_ellipse.py
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55
phi_ellipse.py
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import winkelumrechnungen as wu
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def polyapp_tscheby_hayford(s: float) -> float:
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"""
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Berechnung der ellipsoidisch geodätischen Breite.
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Polynomapproximation mittels Tschebyscheff-Polynomen.
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Auf dem Hayford-Ellipsoid.
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:param s: Strecke auf einer Ellipse vom Äquator aus
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:type s: float
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:return: ellipsoidisch geodätische Breite
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:rtype: float
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"""
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c0 = 1
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c1 = -0.00837809325
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c2 = 0.00428127367
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c3 = -0.00114523986
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c4 = 0.00023219707
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c5 = -0.00004421222
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c6 = 0.00000570244
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alpha = wu.gms2rad([0, 0, 325643.97199])
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s90 = 10002288.2990
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xi = s/s90
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phi = alpha * xi * (c0*xi**(2*0) + c1*xi**(2*1) + c2*xi**(2*2) + c3*xi**(2*3) +
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c4*xi**(2*4) + c5*xi**(2*5) + c6*xi**(2*6))
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return phi
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def polyapp_tscheby_bessel(s: float) -> float:
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"""
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Berechnung der ellipsoidisch geodätischen Breite.
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Polynomapproximation mittels Tschebyscheff-Polynomen.
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Auf dem Bessel-Ellipsoid.
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:param s: Strecke auf einer Ellipse vom Äquator aus
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:type s: float
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:return: ellipsoidisch geodätische Breite
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:rtype: float
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"""
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c0 = 1
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c1 = -0.00831729565
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c2 = 0.00424914906
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c3 = -0.00113566119
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c4 = 0.00022976983
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c5 = -0.00004363980
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c6 = 0.00000562025
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alpha = wu.gms2rad([0, 0, 325632.08677])
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s90 = 10000855.7644
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xi = s/s90
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phi = alpha * xi * (c0*xi**(2*0) + c1*xi**(2*1) + c2*xi**(2*2) + c3*xi**(2*3) +
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c4*xi**(2*4) + c5*xi**(2*5) + c6*xi**(2*6))
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return phi
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