Accession Number : ADA266064


Title :   Analysis of Geophysical Measurements and Spacecraft Interactions


Descriptive Note : Final rept. Jun 1989-Jan 1993


Corporate Author : RADEX INC BEDFORD MA


Personal Author(s) : Bass, J N ; Bhavnani, K H ; Bonito, N A ; Bounar, K H ; Grady, P L


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a266064.pdf


Report Date : 29 Jan 1993


Pagination or Media Count : 288


Abstract : Investigations were supported to analyze geophysical measurements with integrated applications of ephemerides physics, and mathematics of the ionosphere and near space. Projects undertaken included analytical and computational simulation of spacecraft interactions processes associated with charging, contamination, liquid venting, and critical ionization velocity; data based and analytical investigations of trapped particles, dosage, magnetic fields and instrumentation for the CRRES experiment; data based studies of auroral electron and ion precipitation including neural network techniques, ionospheric scintillation and OTH backscatter, and atmospheric density and orbital decay. Systems were developed and applied for calibration and processing of the CRRES and APEX magnetometers, and for generation of satellite attitude and ephemeris. Techniques employed for applying coordinate systems, depicting vehicle and astronomical circumstances, and interactively presenting data in conventional and color formats are also described.... Spacecraft charging, Contamination, CIV, Liquid venting, CRRES, Radiation belts, PROTEL, Dosimeter, Magnetic fields, Magnetometer calibration and processing, Auroral electron and ion precipitation, Scintillation, OTH backscatter, Atmospheric density, APEX, Attitude.


Descriptors :   *GEOMAGNETISM , *GEOPHYSICS , *SPACECRAFT CHARGING , VELOCITY , ALGORITHMS , DENSITY , MAGNETIC FIELDS , EARTH ORBITS , EROSION , PARTICLES , ARTIFICIAL SATELLITES , ATMOSPHERIC DENSITY , IONOSPHERIC SCINTILLATION , CONTAMINATION , AURORAE , NONLINEAR ANALYSIS , CALIBRATION , IONIZATION , INSTRUMENTATION , ELECTRIC DISCHARGES , PLASMASPHERE , MAGNETOMETERS , RADIATION BELTS , EPHEMERIDES , ELECTRIC CHARGE , SATELLITE ATTITUDE , DOSIMETERS , COORDINATES , ELECTRONS , NUMERICAL ANALYSIS , NEURAL NETS , MEASUREMENT , IONS , SIMULATION


Subject Categories : Geomagnetism
      Unmanned Spacecraft
      Manned Spacecraft


Distribution Statement : APPROVED FOR PUBLIC RELEASE