• All sections
• G - Physics
• G01S - Radio direction-finding; radio navigation; determining distance or velocity by use of radio waves; locating or presence-detecting by use of the reflection or reradiation of radio waves; analogous arrangements using other waves
• G01S 1/40 - Systems for determining direction or position line using comparison of [1] the phase of the envelope of the change of frequency, due to Doppler effect, of the signal transmitted by an antenna moving, or appearing to move, in a cyclic path with [2] the phase of a reference signal, the frequency of thi the apparent movement of the antenna being produced by cyclic sequential energisation of fixed antennas

Patent holdings for IPC class G01S 1/40

Total number of patents in this class: 5

10-year publication summary

Principal owners for this class