Study On Optical Real-time Horizontal Reference Measuring Method

High precision measurement of the Vehicle、carrier aircraft measurement andcontrol equipment in-motion is a challenging task， measurement and controlequipment in-motion must have the ability of independent position and orientationcontinuously. The traditional position and orientation measuring method based onthe navigation system cannot meet the requirements of high precision and low costto the measurement and control equipment in-motion of the future missile、spacemeasurement and control system， so it is necessary to develop a new generation oftechnology in independent position and orientation based on optical measurementsystem. Optical real-time horizontal reference measuring technology is one ofresearch priorities on independent position and orientation based on opticalmeasurement system. Key Laboratory of the General Armament Department of thesubject comes from research projects the level of dynamic real-time optical precisionmeasurement method. Optical real-time benchmarks measuring technology researchis based on optical measurement systems directed autonomous positioningtechnology research priorities.The thesis combines the key technology research project of the GeneralEquipment Department--"research on dynamic real-time optical precision levelmeasuring method"， from two aspects that Optical real-time horizontal referencemeasuring model and the floating body slightly sloshing mechanical analysis， horizontal reference measuring method based on optical measurement was studiedsystematically. Optical collimation——that horizontal reference real-time measuringprecision of liquid floating plane mirror two-dimension angle model under theconditions of slightly sloshing was studied deeply from three aspects of theorystudy， numerical calculation and experimental research. The main contents wereincluded in the paper:Firstly， comprehensive inertial navigation system， celestial navigationsystem， based on the basic working principle of the GPS positioning andorientation systems and integrated navigation system， the advantages anddisadvantages of each existing as well as the current state of development，indicating a celestial navigation system in the autonomous positioning directionaltechnologythe importance of analysis and Prospect on the importance ofhigh-precision level of autonomy reference measurement method; celestialnavigation technology for future research and development direction. Roughbenchmarks and stellar refraction combined indirect the horizontal referencemeasurement technology works and have the advantage， and pointed out thelimitations of the technology applications (atmospheric refraction model error ofnavigation accuracy is very significant， not suitable for ground equipment in)，further illustrates the significance of this paper， on the basis of optical real-timelevel measurement system designed research.Secondly， a detailed analysis of the use of the optical real-time level of thereference measurement system， technical indicators， the work environment on thebasis of the two-dimensional servo tracking turntable with autocollimation-liquidfloat plane mirror angle measurement platform coupled measurement technologyprograms，the program， through the the coupled servo tracking platform and anglemeasurement platform real-time output angle information to build a base fixedlyconnected with the coordinate system defined in the system at the measuring pointmoving horizontal attitude angle measurement model. Brief introduction to theworking principle of the two-dimensional servo tracking turntable， the analysis of two-dimensional servo tracking turntable reference output information on the levelof inertial navigation system to track the angle tracking error， the liquid floatingplatform in which a plane mirror swaying range; to the measurement process in thediscussion of the system may occur due to external shaking excitation caused by theliquid floating the mirror unit the instability cause distortion problems of real-timeoutput data of the measurement system， based on floating bodies metacentrictheoretical analysis the liquid float plane mirror stability， based on the floatingbody dynamics equation theory floating on the fluid the heave equation of motion ofthe plane mirror， the equations of motion of the roll and pitch equations of motionfor setting up and solving; based on existing hull heave， pitch， roll law of motionobtained liquid floated the plane mirror heave movement of the analytical solutionand roll motion， the numerical solution of the vertical roll motion， and provide areliable basis for the behind the system overall technical indicators of argumentationand analysis.Thirdly， carrying out the the ship mooring under the conditions of small-anglequasi-dynamic range Datum measurement test， collecting test data， measurementdata by comparing the system with the INS data collection， illustrate theeffectiveness of the test data obtained; spectral analysis of the test results，verifyreasonableness of the liquid float plane mirror kinematic analysis of thecorrectness of the results and system solutions， feasibility and detailed analysis ofthe precision of the system for the next upcomingthe system carried outmeasurement data real-time correction model to build the foundation and to build themeasurement mode.Finally， the application of the system based on the level of the opticalmeasurement the reference measurement technology and its in-vehicle，carrier-based monitoring and control equipment autonomous positioning directionalreasonable proposal， and follow-up research.