Research On Acquisition And Tracking Strategy Of High Dynamic Aircraft In Near Space

This paper takes the tracking and measurement of high dynamic flying targets in nearby space as the research object,and carries out the research on the acquisition and tracking strategy of Ka-band telemetry and comprehensive measurement and control equipment for high dynamic flying targets in nearby space.The traditional method of tracking and measuring space targets by ground-based measurement and control stations can complete the tracking of space targets such as slow target flying speed and high orbit,but it is difficult to adapt to high dynamic flying targets in nearby space.In order to ensure that the ground Ka-band equipment completes the tracking of high dynamic targets in nearby space,this article starts with the characte ristics of target flight and the working principle of the equipment,and carries out a series of studies,and proposes a strategy for tracking and capturing high dynamic flying targets in nearby space,which can guide nearby space flight Target capture and tracking.The main research contents of this paper are as follows:(1)Analysis of flying characteristics of highly dynamic targets in adjacent spaceIn-depth analysis of the flight process and characteristics of high dynamic targets in adjacent space,complete the basic condition analysis of the ground equipment for target acquisition and tracking,and put forward the constraints of the equipment deployment position to ensure the successful acquisition and stable tracking of the target by the ground measurement and control station.(2)Research on the working principle of Ka-band equipment acquisition and tracking targetTo study and formulate an acquisition and tracking strategy,we must first understand the basic principles of the equipment’s work.In the equipment’s acquisition and tracking process,it is first necessary to use the guidance data to drive the antenna to rotate so that the antenna beam covers the airspace where the target is located,and then receive the downlink signal of the space flight target.When the intensity exceeds the detection threshold,the targe t is found.Finally,the signal is locked and transferred to the self-tracking work method;secondly,understand the source of guidance data for capturing and tracking the target,the specific method of locking and tracking the target,the information flow,and the calculation method of the device’s actual capture and tracking ability,Is the basis for designing a reasonable and feasible capture and tracking strategy.(3)Analysis of the impact of angle measurement accuracy on the probability of captureThe angle measurement accuracy is the basic condition for the equipment to complete the angle acquisition and tracking of the target.By analyzing the angle tracking measurement accuracy of the Ka-band equipment,combined with the flying characteristics of the high dynamic target in the adjacent space,the minimum conditions for the Ka-band equipment to capture and track the target are given.The tracking capture strategy provides a theoretical basis.(4)Analysis of the influence of the downlink signal on the tracking strategyDownlink signal strength determines whether the Ka-band device can lock the target,and complete the calculation of radial distance and radial velocity,analyze the signal transmission attenuation and multipath effects between the high dynamic target in adjacent space and the ground station,and give the Ka-band The minimum conditions for locking and stably tracking the downlink signal lay a theoretical foundation for formulating a reasonable acquisition and tracking strategy.(5)Guided capture and stable tracking strategyCombining engineering practice,this paper introduces the engineering method for Ka-band equipment to capture and track high-dynamic targets in nearby space.The previous study is the theoretical basis to anal yze the constraints of Ka-band equipment deployment,and proposes the deployment of Ka-band equipment when acquiring and tracking high-dynamic targets in nearby space.Station strategy,guide capture and stable tracking strategy.