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      https://www.ias.ac.in/article/fulltext/sadh/038/01/0109-0121

    • Keywords

       

      Space debris; wavelets; Mexican hat; Laplace distribution; random search; parameter estimation.

    • Abstract

       

      Due to increase in the satelite launch activities from many countries around the world the orbital debris issue has become a major concern for the space agencies to plan a collision-free orbit design. The risk of collisions is calculated using the in situ measurements and available models. Spatial density models are useful in understanding the long-term likelihood of a collision in a particular region of space and also helpful in pre-launch orbit planning. In this paper, we present a method of estimating model parameters such as number of peaks and peak locations of spatial density model using continuous wavelets. The proposed methodology was experimented with two line element data and the results are presented.

    • Author Affiliations

       

      D Sudheer Reddy1 N Gopal Reddy2 A K Anilkumar3

      1. Digital Mapping and Modelling Division, Advanced Data Processing Research Institute, Secunderabad 500 009, India
      2. Department of Mathematics, Osmania University, Hyderabad 500 007, India
      3. Applied Mathematics Division, Vikram Sarabai Space Centre, Trivandrum 695 022, India
    • Dates

       
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