Proceedings of the IEEE · 2007 · 51 citations · 7 references
EngineeringLocation EstimationMeasurementSensor ArrayGlobal Navigation Satellite SystemDeep Space NetworkPositioning SystemSpacecraft NetworksEducationRange MeasurementsLocalizationRange MeasurementSpace-time ProcessingCalibrationInstrumentationTrajectory ModelsTime-of-flight CameraSatellite Signal ProcessingComputer EngineeringRange ImagingSignal ProcessingRadarAerospace Engineering
Range measurements improve spacecraft trajectory models, but deep‑space ranging faces long two‑way delays and low signal‑to‑noise ratios. Accurate range determination requires calibrating the delay within the tracking station. Long correlations with Doppler rate‑aiding, performed on commercial digital signal processors, enable flexible signal design for both traditional sequential ranging signals and pseudonoise range codes. Measurements with a standard deviation of 1 m have been achieved.
Range measurements are used to improve the trajectory models of spacecraft tracked by the deep space network. The unique challenge of deep-space ranging is that the two-way delay is long, typically many minutes, and the signal-to-noise ratio is small. Accurate measurements are made under these circumstances by means of long correlations that incorporate Doppler rate-aiding. This processing is done with commercial digital signal processors, providing a flexibility in signal design that can accommodate both the traditional sequential ranging signal and pseudonoise range codes. Accurate range determination requires the calibration of the delay within the tracking station. Measurements with a standard deviation of 1 m have been made.
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214 Pseudo-Noise and Regenerative Ranging
Peter Kinman · 2015 · 16 citations
Two-way ranging during early mission phase
P.W. Kinnian, Jeff Berner · 2004 · 15 citations