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Orbit Determination from Passive Range Observations
1974 / IEEE
This item was taken from the IEEE Periodical ' Orbit Determination from Passive Range Observations ' An experiment is described by which the ephemeris of a near-synchronous satellite was determined from passive range observations. The data consist of the measured times of reception at ground tracking stations of electromagnetic signals which are radiated from the satellite at regular intervals. A comparison of the ephemeris to one obtained from Doppler tracking indicates an accuracy of better than 4.9 mrad rms.