US 9,544,748 B2 · Tsunami monitoring radar system including transmitting antenna for radiating transmission signal for detecting tsunami as radio wave toward sea

Abstract

A tsunami monitoring system includes a transmitting antenna configured to radiate a transmission signal to detect a tsunami as a radio wave toward a sea, and a receiving antenna configured to receive reflected waves reflected by the tsunami as a receiving signal. The tsunami monitoring system includes a signal generator circuit configured to generate the transmission signal having a predetermined frequency, a signal processor portion configured to generate a beat signal of a frequency difference between the transmission signal and the receiving signal, and a wave height estimator portion configured to divide a radio wave radiation region into a plurality of regions, calculate a flow velocity of a sea surface of the tsunami for each region on the basis of the beat signal, and estimate a wave height of the tsunami from a calculated flow velocity.

Claims11

Dependent claims

A tsunami monitoring radar system comprising:

a transmitting antenna that radiates a transmission signal to detect a tsunami as a radio wave toward a sea;
a receiving antenna that receives reflected waves reflected by the tsunami as a receiving signal;
a signal generator circuit that generates the transmission signal having a predetermined frequency;
a signal processor portion that generates a beat signal of a frequency difference between the transmission signal and the receiving signal;
and
a wave height estimator portion that divides a radio wave radiation region into a plurality of regions, calculates a flow velocity of a sea surface of the tsunami for each region on the basis of the beat signal, and estimates a wave height of the tsunami from the calculated flow velocity.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

14/890,323Filed 23 Jan 2014

Priority

JP 2013-11573431 May 2013

Published

US 2016/0157073 A12 Jun 2016

Granted

10 Jan 2017

Term ends

Not estimatedThe source records don’t support an estimate.

Classification18 codes

H04W 4/90
Services specially adapted for wireless communication networks; Facilities therefor: services for handling of emergency or hazardous situations,…
G01C 13/00
Surveying specially adapted to open water
G01C 13/002
Surveying specially adapted to open water, e.g. sea, lake, river or canal: measuring the movement of open water
G01S 13/50
Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems: systems of measurement based on relative movement of target

Tsunami monitoring radar system including transmitting antenna for radiating transmission signal for detecting tsunami as radio wave toward sea

Life of this patent

Tsunami monitoring radar system including transmitting antenna for radiating transmission signal for detecting tsunami as radio wave toward sea

Life of this patent

Abstract

Claims11