PERTURBATIONAL CONSTRUCTION OF RE-ENTRY TRAJECTORIES FOR IMPACT PREDICTION AND RADAR ACQUISITION

Abstract

Re-entry trajectories are constructed using a special perturbation procedure based on PICARD's method of successive substitutions by departing from a zero order or reference path. The reference path for the real time impact prediction case is a closed form rectilinear trajectory. For the high precision calculations of radar acquisition the zero order path is the planned path plus constant increments to match the radar observed re-entry initial conditions. Numerical constructions of the first order solutions for relatively large values of the perturbations in the initial conditions show that the end figure errors are sufficiently small. These procedures are conducive to the small total computing times which are essential for real time impact or sequential position prediction. (Author)

Document Details

Document Type
Technical Report
Publication Date
Oct 15, 1960
Accession Number
AD0255078

Entities

People

  • Raul R. Hunziker

Tags

DTIC Thesaurus Topics

  • Acquisition
  • Construction
  • Mathematical Analysis
  • Mathematics
  • Numerical Analysis
  • Numerical Methods And Procedures
  • Perturbations
  • Precision
  • Trajectories

Readers

  • Calculus or Mathematical Analysis
  • Computational Modeling and Simulation
  • Control Systems Engineering.