公开(公告)号：US11978350B2

公开(公告)日：2024-05-07

申请号：US17677296

申请日：2022-02-22

Applicant: BEIHANG UNIVERSITY

Inventor： Yanbo Zhu ,  Xiaofeng Shi ,  Zhipeng Wang

IPC: G01S19/02 ,  G01S19/15 ,  G01S19/23 ,  G01S19/37 ,  G08G5/00

CPC classification number: G08G5/0069 ,  G01S19/02 ,  G01S19/15 ,  G01S19/23 ,  G01S19/37 ,  G08G5/0013

Abstract: The present disclosure relates to a technical field for airborne navigation and discloses a data acquisition system and method for airborne navigation devices based on unmanned aerial vehicle. The system includes an unmanned aerial vehicle flight control system, a navigation devices test antenna array, a multi-channel signal processing module, a signal acquisition module, an ADS-B transmitting module, a GNSS receiver, a UHF data link receiver, a power module and a ground station. The unmanned aerial vehicle is equipped with corresponding modules to receive signals from ground navigation devices, perform corresponding processing and storage, and transmit data to the ground, at the same time, receive control instructions sent by the ground to complete corresponding monitoring, analysis and inspection.

公开(公告)号：US11875524B2

公开(公告)日：2024-01-16

申请号：US17527267

申请日：2021-11-16

Applicant: BEIHANG UNIVERSITY

Inventor： Xiaoyan Luo ,  Bo Liu ,  Xiaofeng Shi ,  Chengxi Wu ,  Lu Li

IPC: G06T7/60 ,  G06T7/80 ,  G06T7/11 ,  G01B11/00 ,  G01B11/24 ,  G06T5/00 ,  G06T17/10

CPC classification number: G06T7/60 ,  G01B11/002 ,  G01B11/24 ,  G06T5/002 ,  G06T7/11 ,  G06T7/80 ,  G06T17/10 ,  G06T2207/10028 ,  G06T2207/10032

Abstract: The present disclosure provides an unmanned aerial vehicle platform based vision measurement method for a static rigid object. Aiming at the problem of high professionality but poor versatility of existing vision measurement methods, the present disclosure uses a method combining object detection and three-dimensional reconstruction to mark an object to be measured, and uses a three-dimensional point cloud processing method to further mark a size to be measured and calculate its length, which takes full advantage of the convenience of data collection by an unmanned aerial vehicle platform (UAV), and its global navigation satellite system (GNSS), an inertial measurement unit (IMU) and the like to assist measurement. There is no need to use common auxiliary devices such as a light pen and a marker, which can improve the versatility of vision measurement.