Patent ID: 11860089
Assignee: NEC CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A receiver, comprising:
a memory storing instructions;
a processor configured to execute the instructions; and
at least one detector configured to receive an optical signal that has passed through a measurement space;
wherein the processor is configured to execute the instructions to:
extract an optical signal falling within a measurement range from the optical signal received by the at least one detector;
determine a presence of an anomaly in the measurement space using a waveform of the extracted optical signal formed as a gas molecule of a measurement gas absorbs energy of the optical signal; and
perform signal processing on the extracted optical signals obtained by performing a plurality of instances of wavelength sweeping to shape spectral intensity of the extracted optical signals into two-dimensional data in which a first direction corresponds to one wavelength sweeping and a second direction corresponds to a number of the wavelength sweeping,
wherein the presence of an anomaly is determined using the two-dimensional data.