CPC G01S 5/0027 (2013.01) [G01S 13/583 (2013.01); G01S 13/62 (2013.01)] | 15 Claims |
1. A communications node of a multi-node communications network, comprising:
a communications interface including at least one antenna element;
a controller operatively coupled to the communications interface, the controller including one or more processors and configured to:
identify a plurality of signals transmitted by a neighbor node of the communications node, the plurality of signals corresponding to a set of Doppler nulling angles traversed by the neighbor node and to at least one frequency adjustment of the neighbor node to resolve a Doppler frequency offset at the corresponding Doppler nulling angle, the neighbor node moving relative to the communications node according to one or more of a velocity vector and an angular direction;
determine, based on the plurality of identified signals, a plurality of frequency shift points (FSP), each FSP corresponding to the Doppler frequency offset at the corresponding Doppler nulling angle and associated with a relative radial velocity between the communications and neighbor nodes;
and
determine, based on the plurality of FSPs, a magnitude of the velocity vector.
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