vor.hlp

MATLAB在飞行动力学和控制中应用的工具

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The masked subsystem block VOR, from the VOR sublibrary of the
NAVLIB library, calculates VOR signals which an aircraft re-
ceives if it flies at a certain position with respect to a user-
defined reference VOR bearing. The coordinates of the VOR antenna,
measured relatively to the earth-bounded reference frame, must be
defined for t = 0.

Inputsignals: uvor1 and uvor2.
==============================
 uvor1 = [xe ye H]',
 uvor2 = psi.

where:

 xe : X-coordinate of aircraft in Earth-fixed reference frame [m]
 ye : Y-coordinate of aircraft in Earth-fixed reference frame [m]
 H  : altitude of aircraft above sea level [m]
 psi: heading of the aircraft (yaw angle) [rad]

(these signals are outputs from the aircraft dynamics model).

Outputsignals: yvor1, yvor2, and yvor3.
=======================================
 yvor1 = Gamma_VOR: Angle between chosen VOR-bearing and line
                    from aircraft's c.g. to VOR antenna [rad]
 yvor2 = R_VOR    : 2D-distance from origin Earth-fixed reference
                    frame to VOR (as seen from above) [m]

 yvor3 = [Cone-of-silence-flag, Range-flag]'.
 yvor4 = ToFrom

 The Cone-of-silence-flag is set to 1 if the aircraft enters the
 'cone of silence'. The Range-flag is set to 1 if the aircraft
 flies outside the area where the VOR signals can be received
 with appropriate reliability.

 The variable ToFrom is set to 1 if aircraft is flying towards
 the VOR antenna or 0 if the aircraft flies away from the antenna.

References.
===========
[1]. A Simulink environment for Flight Dynamics and Control ana-
     lysis - Application to the DHC-2 'Beaver', part I: Implemen-
     tation of a model library in Simulink. Delft University of
     Technology, September 1993.

More info.
==========
See VORERR.HLP for more info about the block VORERR, which can
be used to implement steady-state errors in the VOR signals.

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The FDC toolbox, Copyright Marc Rauw 1994-1998.