Accession Number : ADA184750

Title :   Balloon Track Data Analysis.

Descriptive Note : Final rept. 3 Jul 85-31 Mar 87,

Corporate Author : BEDFORD RESEARCH ASSOCIATES MA

Personal Author(s) : Burkhardt,P ; Fowler,R ; Moses,M

PDF Url : ADA184750

Report Date : 31 Mar 1987

Pagination or Media Count : 39

Abstract : The primary goal of this program was to design a post-flight data processing system to measure gravity to 1 mgal accuracy. The purpose was to analyze data from balloons flights and to assess the feasibility of measuring gravity to this accuracy. Emphasis during the effort would be on determining the relative contribution of the various error sources to the overall error budget. Primary emphasis was on assessing the performance of GPS as the main tracking system. To facilitate this assessment, a direct comparison of the accuracies in determining gondola position, velocity, and acceleration will be made between GPS tracking, radar tracking, and tracking performance. It is anticipated that using a differential-GPS approach would yield position, velocity, and acceleration accuracies which are significantly better than ground-based radar. The proposed method of estimating gravity based on gravimeter, gondola package tracking data, and inertial motion sensing package data involves an integrated high-order Kalman filter approach.

Descriptors :   *GRAVIMETRY, *COMPUTER PROGRAMS, *BALLOONS, HIGH ALTITUDE, SYSTEMS ANALYSIS, KALMAN FILTERING, GLOBAL POSITIONING SYSTEM, RADAR TRACKING, GONDOLAS, STANDARDS

Subject Categories : Geomagnetism
      Computer Programming and Software
      Lighter-than-air Aircraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE