Range Only Measurement of Trajectory and Recording

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Range Only Measurement of Trajectory and Recording

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A nonambiguous spherical and elliptical, long-baseline, range-only trajectory measuring system utilizing phase comparison techniques with range modulation frequencies. </dd>
The system consists of three of more receivers which track a transponder interrogated by a signal transmitter. The reference signal from the ground transmitter is also received by the ground receivers. Simultaneous range measurements are made by the ground receivers, which are correlated with base timing from which space position can be computed by triangulation. The system operates on 387 and 417 megacycles. </dd>

References

This article is based on NASA's Dictionary of Technical Terms for Aerospace Use