Photoelectric pod collimation axis error correction method based on integrated navigation post-processing
An optoelectronic pod, error correction technology, applied in navigation, mapping and navigation, navigation through speed/acceleration measurement, etc., to achieve the effect of easy operation
Pending Publication Date: 2022-06-10
西安应用光学研究所
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
This method is complicated and requires multiple coordinate system conversions, and sometimes it is difficult to operate due to structural occlusions; the second is to establish a special large calibration field on the ground, set up special targets, and pass the aerial test. Carry out calibration, such as the AERO control of IGI Company in Germany; the boresight calibration method of POSAV system of Applanix Company in Canada
Article by Fu Jianhong and Zhao Shuangming in China: Airborne POS Collimation Error Correction Based on Image Bottom Point [J]. Journal of Surveying and Mapping 2011, 40(5), 610-615; Article by Li Xueyou and Ni Zhongli: IMU / DGPS Research on the layout scheme of the calibration field in auxiliary aerial photogrammetry [J]. Surveying and Mapping Engineering 2005, 14(4), 14-18, etc. are based on this method. This method requires too high conditions, complicated operation, high cost, and is not suitable for large scope promotion
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0100] The specific implementation steps are as follows:
[0101] The first step: the photoelectric pod is installed on the mobile test platform, and the height of the installation tool is adjusted manually, so that the photoelectric pod can conveniently complete the optical axis self-collimation function in front of the collimator;
[0102] Step 2: Connect the differential satellite navigation module and the data recording computer;
[0103] Step 3: In an open field, keep the mobile platform still and power on the inertial navigation module and differential satellite navigation system at the same time, and record the satellite navigation data and inertial navigation module data synchronously for more than 8 minutes while the mobile platform is stationary;
[0104] Step 4: Start the mobile platform and run continuously at a speed of about 20 kilometers per hour for more than 10 minutes (with acceleration, deceleration and turning in the middle), and simultaneously record satel...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention belongs to the technical field of photoelectric reconnaissance monitoring systems, and particularly relates to a photoelectric pod collimation axis error correction method based on integrated navigation post-processing. The method comprises the following steps: firstly, carrying out a sports car test on the photoelectric pod on the ground; then, the self-collimation work of the optical axis of the photoelectric pod and the collimator is completed in front of the collimator; and finally, carrying out combined navigation post-processing on the synchronously recorded inertial measurement unit data and differential satellite navigation data, calculating course and attitude information of the navigation unit at the moment when the optical axis of the photoelectric pod and the collimator are auto-collimated, calculating a visual axis calibration parameter, and compensating to complete the calibration of the visual axis of the photoelectric pod. The method is different from a flight calibration field method and an image base point-based airborne POS collimation axis error calibration method in principle, has low requirements on a test field and test conditions, is simple in working process and easy to implement, saves time and cost, and can improve the photoelectric pod collimation axis error correction precision.
Description
technical field [0001] The invention belongs to the technical field of photoelectric reconnaissance and monitoring systems, in particular to a method for correcting a collimation axis error of a photoelectric pod based on integrated navigation post-processing, in particular to a method for correcting a collimation axis error of a high-precision photoelectric pod completed on the ground. Background technique [0002] At present, most of the airborne photoelectric pods are equipped with an inertial / satellite integrated navigation unit (hereinafter referred to as the navigation unit), which is used to realize the geographic positioning and tracking of the target. In order to reduce the weight and size of the photoelectric pod, the navigation unit is generally combined with the optical The sensors are fixed together on the optical bench, but due to the limited machining accuracy and installation process, there is a non-parallelism between the inertial navigation axis and the phot...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G01C25/00G01C21/16G01S19/40G01S19/49
CPCG01C25/005G01C21/165G01S19/40G01S19/49
Inventor 马忠孝柯诗剑刘吉龙陈颖巩全成王惠林蒋潇村黄皓尹剑
Owner 西安应用光学研究所