Based on the abundant optical image measurement data from the optical measurement information, this paper puts forward the method of evaluating the rocket flight stability performance by using the measurement data of the characteristics of the carrier rocket in imaging. On the basis of the method of measuring the characteristics of the carrier rocket, the attitude parameters of the rocket body in the coordinate system are calculated by using the measurements data of multiple high-speed television sets, and then the parameters are transferred to the rocket body attack angle and it is assessed whether the rocket has a good flight stability flying with a small attack angle. The measurement method and the mathematical algorithm steps through the data processing test, where you can intuitively observe the rocket flight stability state, and also can visually identify the guidance system or failure analysis.
Mathematical analysis model for influence of reference position deviation on carrier rocket take-off drift has been made to tackle the issue on determination of reference position of reticule for optical tracking and measurement of video image in aerospace test range and the variation in rocket take-off drift due to reference position deviation has been subjected to quantitative analysis based on angular error of tracking and lateral error of measuring point as a result of deviation of reference position of reticule cross. The method serves as technical support to quality analysis of rocket take-off deviation measurement data and improvement in data processing precision for carrier rocket take-off drift.
Regarding the application value of optically tracked and controlled data in unspecified arc segment, the means from random error characteristic, comparison of nominal parameters, influence of error propagation to measurement and control station distribution analysis have been presented to carry out comprehensive analysis of the measured data in an all-around way to understand the availability of optically tracked data unspecified by practical verification and application in engineering, which is used as an effective evidence for external ballistic data process and make ballistic parameter more precise and reliable as a result of redundant data.
Proc. SPIE. 9142, Selected Papers from Conferences of the Photoelectronic Technology Committee of the Chinese Society of Astronautics: Optical Imaging, Remote Sensing, and Laser-Matter Interaction 2013
KEYWORDS: Rockets, Data processing, Imaging systems, Data centers, Geodesy, Error analysis, Astronomical engineering, Data analysis, Instrument modeling, Data corrections
Since serious drift which does not reflect the actual flight condition occurs in the vertical takeoff phase processing, the data calculation is conducted and the results show that a serious system regular deviation that was not recorded in the report actually existing in certain high-speed TV measuring apparatus. The deviation variance model is established to analyze and calculate the influence of regular deviation in system on the drift of launch rocket so as to obtain the influence quantity in a quantitative way. In this paper, the system deviation compensation process is adopted to effectively correct the deviation of the measuring equipment and provide technical support for the success of missions.