Target distance estimation device, radio wave detection device, and target distance estimation method
AssigneeMitsubishi Electric Corporation
InventorsYoshiki Takahashi, Ryuhei Takahashi
Life of this patent
Estimating the term…
Abstract
A target distance estimation device includes: a multipath composite wave signal generation unit that generates a multipath composite wave signal that is a simulation signal of a composite wave of a direct wave and a multipath wave received by a reception antenna in a case where a provisional target distance, which is a provisional target distance from a radio source to a radio wave detection device, is set; and a target distance estimation unit that estimates a target distance from the radio wave detection device to the radio source on the basis of a correlation between the reception signals and the multipath composite wave signal generated by the multipath composite wave signal generation unit.
Claims15
A target distance estimation device to estimate a target distance from a radio wave detection device to a radio source on a basis of reception signals obtained by a reception antenna of the radio wave detection device receiving a direct wave and a multipath wave from the radio source, the target distance estimation device comprising:
- processing circuitry
- to generate a multipath composite wave signal that is a simulation signal of a composite wave of the direct wave and the multipath wave received by the reception antenna in a case where a provisional target distance, which is a provisional target distance from the radio wave detection device to the radio source, is set, and
- to estimate the target distance from the radio wave detection device to the radio source on a basis of a correlation between the reception signals and the generated multipath composite wave signal, wherein
- the processing circuitry:
- detects radio wave specifications of the reception signals on a basis of the reception signals,
- specifies radio source information related to the radio source on a basis of the detected radio wave specifications,
- specifies a target altitude that is an altitude of the radio source on a basis of the specified radio source information, and
- generates the multipath composite wave signal on a basis of the specified target altitude.
A target distance estimation method of estimating a target distance from a radio wave detection device to a radio source on a basis of reception signals obtained by a reception antenna of the radio wave detection device receiving a direct wave and a multipath wave from the radio source, the target distance estimation method comprising:
- generating a multipath composite wave signal that is a simulation signal of a composite wave of the direct wave and the multipath wave received by the reception antenna in a case where a provisional target distance, which is a provisional target distance from the radio wave detection device to the radio source, is set, and
- estimating the target distance from the radio wave detection device to the radio source on a basis of a correlation between the reception signals and the generated multipath composite wave signal, wherein
- the target distance estimation method further comprises:
- detecting radio wave specifications of the reception signals on a basis of the reception signals,
- specifying radio source information related to the radio source on a basis of the detected radio wave specifications,
- specifying a target altitude that is an altitude of the radio source on a basis of the specified radio source information, and
- generating the multipath composite wave signal on a basis of the specified target altitude.
Dependencies are inferred from the claim text.