TARGET ACCURACY EXPERIMENT
SMYTH RESEARCH ASSOCIATES SAN DIEGO CA
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Open-ended Terms ANGMD-1A, Tiros I. The accuracy with which a target moving above the ionosphere can be located and tracked was studied. The principal line of attack on the basic problem was to measure, by radio techniques, the apparent position of radio satellites as they pass within the line of sight of a ground receiving station, and to compare the apparent position with the true position over a range of elevation angles. These measured deviations were then compared with deviations calculated using available refractive index data which are representative of the area and time in which the measurements were taken. Since it was recognized that these deviations are greatest at low elevation angles, and that it is of greatest importance to detect and track at low elevation angles, the work was concentrated on elevation angles below 15 degrees.
- Celestial Mechanics
- Acoustic Detection and Detectors
- Target Direction, Range and Position Finding
- Unmanned Spacecraft