RADAR APPARATUS, OBSERVING METHOD AND NON-TRANSITORY COMPUTER READABLE MEDIUM
First Claim
1. A radar apparatus comprising:
- an oversampler configured to acquire a sampling signal by performing oversampling on a received signal;
a weight vector calculator configured to calculate a weight vector based on the sampling signal and a waveform information matrix;
a meteorological parameter calculator configured to calculate an estimated value of a meteorological parameter on an observation target based on the weight vector and the waveform information matrix;
an error influence degree calculator configured to select a first observation target considering an estimated error included in the estimated value of the meteorological parameter, or an error influence degree based on the estimated error; and
an error reducer configured to subtract an estimated error that the first observation target gives to an estimated value of a meteorological parameter on a second observation target, from the estimated value of the meteorological parameter on the second observation target.
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Abstract
A radar apparatus according to an embodiment of the present invention includes an oversampler, a weight vector calculator, a meteorological parameter calculator, an error influence degree calculator, and an error reducer. The oversampler performs oversampling on a received signal to acquire a sampling signal. The weight vector calculator calculates a weight vector based on the sampling signal and a waveform information matrix. The meteorological parameter calculator calculates an estimated value of a meteorological parameter on an observation target based on the vector and the matrix. The error influence degree calculator selects a first observation target considering an estimated error included in the estimated value, or an error influence degree based on the estimated error. The error reducer subtracts an estimated error that the first observation target gives to an estimated value of a meteorological parameter on a second observation target, from the estimated value on the second observation target.
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Citations
10 Claims
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1. A radar apparatus comprising:
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an oversampler configured to acquire a sampling signal by performing oversampling on a received signal; a weight vector calculator configured to calculate a weight vector based on the sampling signal and a waveform information matrix; a meteorological parameter calculator configured to calculate an estimated value of a meteorological parameter on an observation target based on the weight vector and the waveform information matrix; an error influence degree calculator configured to select a first observation target considering an estimated error included in the estimated value of the meteorological parameter, or an error influence degree based on the estimated error; and an error reducer configured to subtract an estimated error that the first observation target gives to an estimated value of a meteorological parameter on a second observation target, from the estimated value of the meteorological parameter on the second observation target. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An observing method for causing performed by a computer, the method comprising:
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acquiring a sampling signal by performing oversampling on a received signal; calculating a weight vector based on the sampling signal and a waveform information matrix; calculating an estimated value of a meteorological parameter on an observation target based on the weight vector and the waveform information matrix; selecting a first observation target considering an estimated error included in the estimated value of the meteorological parameter, or an error influence degree based on the estimated error; and an error reducing step of subtracting an estimated error that the first observation target gives to an estimated value of a meteorological parameter on a second observation target, from the estimated value of the meteorological parameter on the second observation target.
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10. A non-transitory computer readable medium having a program stored therein which causes a computer when executed by the computer, to perform processes comprising:
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acquiring a sampling signal by performing oversampling on a received signal; calculating a weight vector based on the sampling signal and a waveform information matrix; calculating an estimated value of a meteorological parameter on an observation target based on the weight vector and the waveform information matrix; selecting a first observation target considering an estimated error included in the estimated value of the meteorological parameter, or an error influence degree based on the estimated error; and an error reducing step of subtracting an estimated error that the first observation target gives to an estimated value of a meteorological parameter on a second observation target, from the estimated value of the meteorological parameter on the second observation target.
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Specification