| 摘要 |
A method and device and a system are disclosed. The method may include: obtaining, by a measurement device, a first image that is obtained by photographing an antenna at a first position (101); mapping M characteristic points included in the first image into a first three-dimensional spatial coordinate system, to obtain M three-dimensional space points that are in the first three-dimensional spatial coordinate system and that have a mapping relationship with the M characteristic points (102), where a first mapping photographing direction is parallel to a direction of an axis in the first three-dimensional spatial coordinate system, and the first mapping photographing direction is obtained by mapping a photographing direction of photographing the first image into the first three-dimensional spatial coordinate system; and obtaining a downtilt of the antenna according to a first angle and/or obtaining an azimuth of the antenna according to a second angle (103). |
| 主权项 |
1. A method for measuring an antenna engineering parameter, the method comprising:
obtaining, by a measurement device, a first image that is obtained by photographing an antenna at a first position, wherein the first image comprises at least M characteristic points on the antenna, the M characteristic points being characteristic points on a surface of the antenna, the M characteristic points being in a same plane but not on a same straight line, and wherein M is a positive integer greater than 2; mapping, by the measurement device, the M characteristic points into a first three-dimensional spatial coordinate system, to obtain M three-dimensional space points that are in the first three-dimensional spatial coordinate system and that have a mapping relationship with the M characteristic points, wherein a first mapping photographing direction is parallel to a direction of an axis in the first three-dimensional spatial coordinate system, or an included angle having a specified angle exists between a first mapping photographing direction and a direction of an axis in the first three-dimensional spatial coordinate system, and the first mapping photographing direction is obtained by mapping a photographing direction of photographing the first image into the first three-dimensional spatial coordinate system; and obtaining, by the measurement device, a downtilt of the antenna according to a first angle and/or obtaining an azimuth of the antenna according to a second angle, wherein the first angle is equal to an included angle between the normal direction of a second plane and a first plane, the second angle is equal to an included angle between a first reference direction in the first plane and a projection of a normal direction of the second plane on the first plane, the first plane is obtained by mapping a first reference plane into the first three-dimensional spatial coordinate system, the second plane is determined by the M three-dimensional space points, and the first reference direction is obtained by mapping a first azimuth reference direction into the first three-dimensional spatial coordinate system, wherein the first azimuth reference direction is a due north direction or a due south direction, or a first included angle greater than 0 degree exists between the first azimuth reference direction and a due north direction, or a second included angle greater than 0 degree exists between the first azimuth reference direction and a due south direction; and wherein the first reference plane is a horizontal plane, or a third included angle greater than 0 degree exists between the first reference plane and a horizontal plane. |
