Design And Implementation Of Intelligentize System Of Calibration Planning

The attenuation of the sensor is a continuous and unavoidable phenomenon,with in the launch and on-orbit operation.Conducting on-orbit calibration is an important and indispensable part of the process of quantifying remote sensing information.With the development of space infrastructure construction of our country,the number and the type of sensors is increased,same with the incresaeing of quantitative requirements of the sensor.Due to an unprecedented increaseing of mission of calibration.The current frequency of the load has been clearly raised to double the requirements.Based on the requirements,the paper puts forward the research of intelligent calibration task planning system.Through the intelligent calculation and analysis to planning of calibration sites all around the world,and give the calibration site selection program frequently.To shorten the planning time,improve work efficiency,improve resource utilization,and ultimately to improve the frequency of calibration.Firstly investigates the current research situation of calibration site planning system.Research found that the current foreign only a few well-known organizations and the load set up the fixed field network information database for their own.And the database is mainly used for management and data distribution of the basic functions,and no planning and analysis functions.China has been related to the construction of fixed field network reported.But it still can not escape the traditional single-field calibration model,leaving a single site as the center to plan the satellite over the top of time.lt can not make full use of the global scope of the site resources,efficiency is not high.According to several different types of site calibration for the requirements of the site.The global fixed field network database management system and calibration task planning system are constructed.Among them,the construction of the database table is based on the needs of the calibration task planning to Collection,storage site related information.lt also provides data support for the calibration task planning module in addition to the basic storage distribution data function of the database.The calibration task planning module uses the relevant venue constraints entered by the user to initially screen the site,and then use the intelligent spatial analysis and calculation to screen the venue again.Finally give the most scientific and reasonable calibration site list.The result are the sites that meets the target satellite to be calibrated for a predetermined period of time worldwide.No longer need to wait in a single field to a specific time to go to the calibration,greatly improving the work efficiency and it is conducive to the frequency of calibration.Finally,the trajectory of Gao Feng No.l satellite on any day of October 28,2016 is calculated by using STK orbit prediction software,and then compared with the result of the system calculation.lt is found that the relative error between the system and STK is on the order of 10-4.And the time difference between the ZY0104 star,the ZY02C star and the GF-1 star crossing the Hefei site is less than 5 minutes compared with the transit time calculated by the system.The feasibility of the calibration mission planning system is described in terms of time and space.And then a series of software on the system before the test to ensure that the software can be normal and stable operation.