Antenna Parameter Measurement Using Photogrammetry and 3D Mapping
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Solution Overview
Problem
Existing methods for measuring antenna engineering parameters, such as azimuth and downtilt, are prone to errors due to factors like engineer skill level, measurement difficulty, and electromagnetic interference, leading to inaccurate results that can cause radio frequency optimization errors and mass connection losses in wireless networks.
Innovation Solution
A method and device that use a measurement device to photograph an antenna and map characteristic points into a three-dimensional spatial coordinate system, allowing for precise calculation of antenna engineering parameters by establishing a mapping relationship between the photographed scenario and a mathematical model, thereby reducing measurement difficulty and improving accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual measurement methods are used to obtain antenna engineering parameters, then the measurement process is simple and does not require complex equipment, but the measurement precision is low due to factors such as engineer skill level, measurement difficulty, and electromagnetic interference
Solution Approach 1:
The patent uses photogrammetry to create a photographic copy of the antenna and its mounting structure. By photographing the antenna from multiple angles and creating a three-dimensional digital model from these images, the system obtains accurate engineering parameters without direct physical measurement. This copying approach eliminates the need for manual measurement while maintaining simplicity in the overall process.
Solution Approach 2:
The patent replaces manual mechanical measurement tools (compasses, protractors) with an optical-digital measurement system. The system uses photographs and image processing algorithms to automatically calculate antenna parameters, substituting the mechanical measurement process with an optical capture and digital computation process that is more precise and less susceptible to human error and electromagnetic interference.
2Difficulty of detecting and measuring
If manual measurement methods are used to obtain antenna engineering parameters, then the equipment required is simple, but the measurement difficulty increases due to on-site conditions and electromagnetic interference
Solution Approach 1:
By creating a photographic copy of the antenna installation, the system captures measurement data remotely without requiring physical contact or close proximity to the antenna. This eliminates the difficulty of on-site measurement while preserving measurement precision, as the photographs can be taken from a distance and processed digitally to extract accurate engineering parameters.
Solution Approach 2:
The patent introduces photographs as an intermediary medium between the measurement objective and the analysis process. Instead of directly measuring the antenna in challenging on-site conditions, the system uses photographs taken from various angles as intermediaries to capture the necessary geometric information, which is then processed digitally to obtain precise engineering parameters without the need for difficult on-site measurements.
3Measurement precision
If photogrammetry method is used to obtain antenna engineering parameters, then the measurement precision is improved, but the device complexity increases due to the need for multiple photographs and coordinate mapping
Solution Approach 1:
The patent makes the measurement system universal by using standard digital cameras that can photograph the antenna from multiple angles. The same photographing device serves multiple functions: capturing the antenna structure, recording reference objects, and providing data for three-dimensional modeling. This multi-functionality reduces the need for specialized complex equipment while maintaining high measurement precision.
Solution Approach 2:
The system creates a comprehensive photographic copy of the antenna installation including reference objects with known dimensions. By photographing the antenna and reference objects together from multiple angles and creating a unified three-dimensional model, the system obtains accurate engineering parameters through digital processing rather than complex physical measurement equipment.
4Measurement precision
If photogrammetry method is used to obtain antenna engineering parameters, then the measurement accuracy is improved, but the operation complexity increases due to coordinate system mapping and angle calculations
Solution Approach 1:
The patent implements self-service by enabling the measurement system to automatically perform coordinate mapping and parameter calculation. The system automatically identifies characteristic points in photographs, maps them to a three-dimensional coordinate system, and calculates engineering parameters without requiring manual intervention for complex computations. This automation maintains high precision while significantly improving ease of operation.
Solution Approach 2:
The patent replaces manual coordinate mapping and angle calculation operations with automated digital image processing and computational geometry algorithms. The system automatically transforms two-dimensional photograph coordinates into three-dimensional spatial coordinates and computes antenna engineering parameters, substituting complex manual mathematical operations with automated computational processes that are both precise and easy to operate.
Data Source
AI summary
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).