Patent ID: 11879970
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Measurement (Instruments)
Classification: CPC G  Y | IPC G

Claim 9:
10. A signal processing method using a weather parameter found based on a reception signal of a reflected wave of a pulsed transmission wave repeatedly transmitted into a space, a Doppler spectrum derived from the reception signal, and a topographic-echo-removed spectrum resulting from removal of a topographic echo from the Doppler spectrum, the signal processing method comprising:
distinguishing an echo by finding a first weather echo region based on a weather parameter among weather parameters that is different in behavior between a weather echo and the topographic echo;
determining an echo region by finding a second weather echo region based on a weather parameter among the weather parameters a behavior of which is not dependent on a Doppler velocity; and
reconstructing a weather echo region by determining as a weather echo region, a combined region of the first weather echo region and the second weather echo region,
wherein determining the echo region includes using, among the weather parameters, at least one of variability in signal strength, variability in spectral width, variability in radar reflective factor difference, and variability in coefficient of correlation between polarized waves.