MUMBAI, India, Nov. 2 -- Intellectual Property India has published a patent application (202641124748 A) filed by Vellore Institute Of Technology on October 19, 2026, for Quantum-Electrometric Apparatus For Satellite Navigation Signal Provenance Authentication And Hardware-Enforced Receiver Gating.
Inventors include Arunkumar; and Shlok Kumar Goenka.
The application for the patent was published on October 30, 2026, under issue no. 44/2026.
Abstract: The present invention relates to an apparatus for physical-layer provenance authentication of satellite navigation signals. The apparatus comprises a laser-interrogated alkali vapour cell configured to quantum-electrometrically measure electromagnetic field characteristics of a received navigation signal, including absolute field strength, polarization, and angle-of-arrival. An optical interrogation system generates measurement data from interaction between Rydberg atoms and the incident radio-frequency field. A processor compares the measured field characteristics with a physical admissibility envelope derived from broadcast ephemeris and corresponding satellite orbital geometry. Based on the comparison, the processor generates a provenance verdict indicating physical consistency or inconsistency of the received signal with an expected satellite source. Upon detection of a provenance violation, a hardware radio-frequency switch physically isolates the navigation receiver from the antenna feed-line. A chip-scale atomic clock provides an independent timing reference during isolation, while feed-line monitoring verifies the switching action, therebyproviding an integrated sensor-to-decision-to-enforcement architecture for satellite navigation signal security.
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