Space target track interruption correlation method based on trace forecast
A space target and track association technology, applied in the field of tracking system, can solve the problems of target tracking time loss, limited batches of effective tracking targets, etc., and achieve the effect of improving continuity and increasing the number of effective tracking targets
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[0007] The specific implementation mode of the present invention divides the following several steps:
[0008] Step 1: In order to improve the accuracy of the initial value point of the trajectory prediction of the space target, the variable-order curve fitting method is used for smoothing in the process of obtaining the initial value point. Since the least squares curve fitting does not require the fitted curve to pass through all known points, The results obtained in the curve fitting process can better reflect the objective reality of the curved track formed by the movement of space targets. It is suitable for dealing with second-order time-varying state quantities that change nonlinearly, so the first-order least squares curve fitting is used for the space target velocity, and the second-order least squares curve fitting is used for the position to improve the accuracy of the initial point of orbit prediction ;
[0009] Step 2: Let t obtained by curve fitting k The posit...
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