Research And Implementation Of Motion Simulation System For Deep Space Impact Detector

Deep space impact detection is an important branch of deep space detection tasks,and a hot spot for deep space detection recently.Deep space impact detection is generally relative to asteroids.The size of asteroids is tens or even hundreds of times smaller than that of large objects,which puts forward higher requirements on the precision,accuracy and autonomous navigation capability of impact detectors.The economic cost and labor cost of deep space impact detector are extremely expensive,so it is inevitable to improve the accuracy of each deep space impact detection task and reduce the failure rate.However,it is unrealistic and expensive to test the detectors by actual deep space experiments,thus ground experiments have become the only low-cost and effective test methods.Aiming at the ground simulation test of the deep space impact detector,this paper designs a set of deep space impact detector motion simulation system to realize the ground simulation test of the deep space impact detector.Firstly,this paper introduces the basic theory of deep space impact detection.Then it designs the system plan,and at same time elaborates the hardware selection for the plan design.Finally,it completes the hardware platform construction of the deep space impact detector motion simulation system.This paper analyzes the reasons for the difficulty of the simulation test of deep space impact detection,combined with the items that need to be verified in the process of deep space impact detection,and designed four software systems.They are the main control system,planetary target dynamic simulation system,detector trajectory simulation system,and planetary target image processing system.Among them,The main control system communicates with the highly integrated electronic equipment inside the deep space impact detector to monitor the real-time status of the internal electronic equipment.The planetary target dynamic simulation system performs dynamic simulation on the starry sky background and the planetary target.The detector trajectory simulation system simulates the real-time trajectory and attitude of the deep space impact detector.The planetary target image processing system acquires centroid of Planetary image,and compares it with the centroid downloaded to verify the centroid extraction capability of the navigation sensor of the deep space impact detector.This paper selects QT to develop four sets of software.Software development adopts object-oriented and modular design ideas.Each software system includes a communication module,using TCP / IP protocol to achieve communication between software.The detector trajectory simulation system uses STK to assist in development.The planetary target dynamic simulation system uses Open GL to assist development.This paper combined four sets of software to compare and analyze the functions of the system,and verified the feasibility of the system.