Radar device

摘要

According to an embodiment, there is provided a radar device including a generating unit, an estimating unit, and a determining unit. The generating unit generates a frequency spectrum from a beat signal corresponding to a predetermined period. The estimating unit estimates a peak frequency corresponding to a target on the basis of location information of the target corresponding to a past period. The determining unit determines, with respect to the frequency spectrum corresponding to the latest period, whether the peak frequency is a peak corresponding to the target by comparing power near the peak frequency estimated by the estimating unit with a predetermined threshold.

主权项

1. A radar device comprising:
a generating unit that generates a frequency spectrum from a beat signal corresponding to a predetermined period “t;” an estimating unit that estimates (i) a distance and a relative velocity of a target in the predetermined period “t” based on the distance and the relative velocity of the target in a past period “t−1,” which precedes the predetermined period “t,” and (ii) estimates a peak frequency corresponding to the target in the predetermined period “t” based on the distance and the relative velocity estimated by the estimating unit; and a determining unit that determines, with respect to the frequency spectrum generated by the generating unit, a frequency equal to the estimated peak frequency in the frequency spectrum generated by the generating unit is a peak frequency corresponding to the target in the predetermined period “t” when power corresponding to the estimated peak frequency in the frequency spectrum generated by the generating unit is equal to or higher than a first predetermined threshold, wherein
the generating unit generates frequency spectra with respect to an upbeat section and a downbeat section in the beat signal corresponding to the predetermined period “t,” respectively;the estimating unit estimates respective peak frequencies on the frequency spectra based on a beat signal in the past period “t−1;” andwhen the estimated peak frequency with respect to the downbeat section is equal to or lower than a fourth predetermined threshold, and power corresponding to the estimated peak frequency in one of the frequency spectra corresponding to the upbeat section and the downbeat section is equal to or higher than the first predetermined threshold, the determining unit determines that a frequency equal to the estimated peak frequency in each of the frequency spectra is a peak corresponding to the target.