Method and apparatus for discriminating a target objective, and related program
First Claim
1. A method for discriminating a target objective, comprising the steps of:
- transmitting and receiving radio waves for detecting a target objective based on radio waves reflected from said target objective;
obtaining automotive vehicle judgment data based on a receiving intensity of reflected radio waves from said target objective, as a value expressed in terms of a radar cross section equivalent to said receiving intensity; and
making a judgment as to whether said target objective is an automotive vehicle or not based on said automotive vehicle judgment data.
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Abstract
An average power value of a peak pair corresponding to a subjective target objective is converted into a radar cross section, to calculate a normalized average power value NP and a standard deviation DP representing a temporal dispersion of a power difference between peak pairs. When the value NP is larger than an automotive vehicle discriminating threshold THnp, the attribute of the subjective target objective is set to “automotive vehicle.” When the value NP is not larger than the threshold THnp and the deviation DP is larger than a human objective discriminating threshold THdp, the attribute of the subjective target objective is set to “non-vehicle objective: human objective.” Furthermore, when the value NP is not larger than the threshold THnp and the deviation DP is not larger than the threshold THdp, the attribute of the subjective target objective is set to “non-vehicle objective: non-human.
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Citations
12 Claims
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1. A method for discriminating a target objective, comprising the steps of:
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transmitting and receiving radio waves for detecting a target objective based on radio waves reflected from said target objective;
obtaining automotive vehicle judgment data based on a receiving intensity of reflected radio waves from said target objective, as a value expressed in terms of a radar cross section equivalent to said receiving intensity; and
making a judgment as to whether said target objective is an automotive vehicle or not based on said automotive vehicle judgment data.
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2. A method for discriminating a target objective, comprising the steps of:
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transmitting and receiving radio waves for detecting a target objective based on radio waves reflected from said target objective, said radio waves being modulated so as to have an ascending section in which the frequency gradually increases and a descending section in which the frequency gradually decreases;
obtaining human objective judgment data based on a receiving intensity of reflected radio waves from said target objective obtained in each of said ascending section and said descending section, as a value representing temporal dispersion in the receiving intensity difference between said ascending section and said descending section; and
making a judgment as to whether said target objective is a human objective or not based on said human objective judgment data.
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3. A system for discriminating a target objective, comprising:
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target objective detecting means for transmitting and receiving radio waves to detect a target objective based on radio waves reflected from said target objective;
automotive vehicle judgment data producing means for producing automotive vehicle judgment data based on a receiving intensity of reflected radio waves from said target objective detected by said target objective detecting means, as a value expressed in terms of a radar cross section equivalent to said receiving intensity; and
automotive vehicle discriminating means for making a judgment as to whether said target objective is an automotive vehicle or not based on said automotive vehicle judgment data. - View Dependent Claims (4)
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5. A system for discriminating a target objective, comprising:
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target objective detecting means for transmitting and receiving radio waves for detecting a target objective based on radio waves reflected from said target objective, said radio waves being modulated so as to have an ascending section in which the frequency gradually increases and a descending section in which the frequency gradually decreases;
human objective judgment data producing means for producing human objective judgment data based on a receiving intensity of reflected radio waves from said target objective detected by said target objective detecting means in each of said ascending section and said descending section, as a value representing temporal dispersion width in the receiving intensity difference between said ascending section and said descending section; and
human objective discriminating means for making a judgment as to whether said target objective is a human objective or not based on said human objective judgment data. - View Dependent Claims (6, 7, 8, 9, 10)
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11. A program installable in a computer system for causing said computer system to function or operate as a target objective discriminating system comprising:
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target objective detecting means for transmitting and receiving radio waves to detect a target objective based on radio waves reflected from said target objective;
automotive vehicle judgment data producing means for producing automotive vehicle judgment data based on a receiving intensity of reflected radio waves from said target objective detected by said target objective detecting means, as a value expressed in terms of a radar cross section equivalent to said receiving intensity; and
automotive vehicle discriminating means for making a judgment as to whether said target objective is an automotive vehicle or not based on said automotive vehicle judgment data.
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12. A program installable in a computer system for causing said computer system to function or operate as a target objective discriminating system comprising:
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target objective detecting means for transmitting and receiving radio waves for detecting a target objective based on radio waves reflected from said target objective, said radio waves being modulated so as to have an ascending section in which the frequency gradually increases and a descending section in which the frequency gradually decreases;
human objective judgment data producing means for producing human objective judgment data based on a receiving intensity of reflected radio waves from said target objective detected by said target objective detecting means in each of said ascending section and said descending section, as a value representing temporal dispersion width in the receiving intensity difference between said ascending section and said descending section; and
human objective discriminating means for making a judgment as to whether said target objective is a human objective or not based on said human objective judgment data.
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Specification