Accession Number : ADA318706

Title :   Launch Detection Satellite System Engineering Error Analysis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA SPACE SYSTEMS ACADEMIC GROUP

Personal Author(s) : Beaulieu, R. ; Alfriend, K. T. ; Jerardi, T.

PDF Url : ADA318706

Report Date : 1996

Pagination or Media Count : 15

Abstract : An orbiting detector of Infrared (IR) energy may be used to detect the rocket plumes generated by ballistic missiles during the powered segment of their trajectory. By measuring angular directions of the detections over several observations, the trajectory properties, launch location, and impact area may be estimated using a nonlinear least squares iteration procedure. Observations from two or more sensors may be combined to form stereoscopic lines-of-sight (LOS) increasing the accuracy of the algorithm. Presented in this paper is a computer model of an estimation algorithm which determines what parameter, or combination of parameters, will have a significant effect on the error of the tactical parameter estimation. This model, which is coded in MAThABTh, generates observation data and then, using the data, produces an estimate of the tactical parameters, i.e., the time, position, and heading at launch and burnout, and an impact time and position. The effects of time errors, LOS measurement errors, and satellite position errors on the estimation accuracy, determined using analytical and Monte Carlo simulation techniques, are presented.

Descriptors :   *COMPUTERIZED SIMULATION, *ERROR ANALYSIS, *INFRARED DETECTORS, *EXHAUST PLUMES, *GUIDED MISSILE DETECTION, ALGORITHMS, LINE OF SIGHT, GUIDED MISSILES, ORBITS, MEASUREMENT, POSITION(LOCATION), IMPACT, PARAMETERS, OBSERVATION, ORIENTATION(DIRECTION), ACCURACY, ESTIMATES, TIME, BURNOUT, LAUNCHING, INFRARED RADIATION, MILITARY TACTICS, TRAJECTORIES, SATELLITE ATTITUDE, ROCKET EXHAUST.

Subject Categories : Computer Programming and Software
      Antimissile Defense Systems
      Infrared Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE