摘要:
The invention relates to a daytime and nighttime stellar sensor (1), comprising: at least one video camera (2) suitable for taking images of stars (3) in the sky; and a control unit (4), characterized in that it furthermore comprises: a polarizer (5), the control unit (4) being configured: to obtain an estimation of a direction of polarization of the polarized light received from the sky by the video camera (2); and to control the orientation of the polarizer (5) so that said polarizer (5) filters polarized light from the sky directed toward the video camera (2) and having said polarization direction.
摘要:
A digital solar compass has a planar image sensor (5) for capturing an image of a gnomon (1) perpendicular to the plane of the image sensor. A cover (12) protects the gnomon and image sensor. A signal processor (14) is arranged to determine the angle of a shadow cast by the sun and the gnomon from the image captured by the planar image sensor. The gnomon (1) may be mounted directly on the planar image sensor (5) or the shadow may be formed on a diffuser sheet (3) and projected onto the image sensor (5) using a lens (4).
摘要:
L'invention concerne une montre boussole, ainsi qu'une lunette notamment destinée à équiper une telle montre. Cette montre comprend au moins un élément indicateur de temps (4) entraîné cinématiquement en rotation par un mouvement horométrique mécanique ou électromécanique, et destiné notamment à être pointé en direction du soleil , et des moyen d'indication de direction (N,S,W,E) ménagés sur ladite montre, permettant de connaître, en fonction de l'orientation du moyen indicateur (4), la direction d'au moins un des points cardinaux, cette montre étant caractérisée en ce qu'elle comporte des moyens (52;16,M) de correction du positionnement des points cardinaux, susceptibles de prendre en compte l'équation du temps et de corriger toute variation entre l'heure solaire vrai et l'heure légale ou locale. L'invention s'applique à une montre, de préférence du type à entraînement mécanique ou électromécanique.
摘要:
An apparatus and system for use in determining location of a celestial body are presented. The apparatus comprises: a polarizer comprising an array of polarized light filter cells and a light sensor array. The array of polarized light filter cells comprises at least a first polarization direction and a second polarization direction different from said first polarization direction. And the polarizer thereby produces polarized light of at least first and second different polarizations. The light sensor array is configured to receive the polarized light from the polarizer and produce data indicative of a pattern of at least one of light polarization intensity and direction. The pattern is indicative of at least one of azimuth and elevation of the celestial body to be located.