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Fix range-rate calculation in azimuth_elevation_range_sez #382

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Summary

Important bug fix: the range-rate computation was incorrect because the formulation in the range-rate calculation did not account for the fact that the receiver was already expressed in the transmitter's frame.

Also add the attempt to compute the time derivative of the SEZ frame, but that will usually fail (cf. function documentation).

Architectural Changes

  • Non breaking: from parameter in the topocentric DCM Orbit method is no longer used; instead the same approach as in the other DCM methods is used. This will simplify the signature for version 0.6.0.

New Features

No change

Improvements

No change

Bug Fixes

Fix #381

Testing and validation

Migrated the topocentric measurement validation from Nyx into ANISE; that test did not export the azimuth and elevation, nor did I save the ephemeris used. There is some difference in the range calculation between GMAT and ANISE, but given the extensive validation of the ephemerides and the excellent accuracy of the range-rate (less than 1 m/s error), I strongly believe the difference is simply a configuration difference.

Documentation

This PR does not primarily deal with documentation changes.

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AER range-rate computation seems incorrect
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