Method, device and equipment for determining whether space target enters and exits from earth shadow area

The invention relates to a method, device and equipment for determining whether a space target enters and exits from an earth shadow area. The method comprises the steps of: acquiring operation information of a space target; according to the vector position, generating a first equivalent triangle composed of the space target, the earth and a full-shadow cone angle origin, and generating a second equivalent triangle composed of the space target, the earth and a half-shadow cone angle origin; calculating a first interior angle of which the vertex in the first equivalent triangle is the full-shadow cone angle origin, and calculating a second interior angle of which the vertex in the second equivalent triangle is the half-shadow cone angle origin; and according to a deflection angle, the firstinterior angle, the second interior angle, the half-shadow cone angle and the full-shadow cone angle, determining the relationship between the space target and the earth shadow area. According to thetechnical scheme, the pos