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US 7,741,989 B2Granted
Radar system, radar transmission signal generation method, program therefor and program recording medium
AssigneeNEC Corporation
InventorShingo Matsuo
Life of this patent
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AssigneeNEC Corporation
InventorShingo Matsuo
Estimating the term…
Disclosed is a radar system capable of detecting near targets even in case of using discrete bands transmission signal. For this end, a discrete bands selection unit 1 selects discrete bands that meet the required radar parameters for detecting target information. A discrete bands synthetic waveform generation unit 2 suitably synthesizes center frequency signals of the respective discrete bands on the time base so that the signals for all of the discrete bands are transmitted within the transmission time of a particular discrete band that requires the longest time among the signals for the selected discrete bands selected. Alternatively, the center frequency signal is generated for the particular band requiring the longest transmission time, while signals sweeping from lower limit frequencies to upper limit frequencies are generated during the transmission time for the discrete bands other than the particular discrete band requiring the longest transmission time. Subsequently, the signals for the respective discrete bands are synthesized on the time base to generate discrete bands synthetic waveforms so that a discrete bands waveform storage unit 3 stores them in a transmission signal buffer.
A radar system using a plurality of discrete frequency bands, each discrete frequency band encompassing a plurality of frequencies, the discrete frequency bands used as radar transmission signal frequencies, the radar system characterized by a plurality of a signals corresponding to the plurality of discrete frequency bands and requiring a corresponding plurality of different transmission times to transmit the signals, such that a given signal of the plurality of signals requires a longest transmission time and such that all other signals of the plurality of signals require transmission times less than the longest transmission time, all the other signals being transmitted within a transmission time for the given signal requiring the longest transmission time by synthesizing all the signals other than the given signal on a time base to generate a discrete band synthetic waveform.
A radar transmission signal generation method for a radar system using discrete frequency bands as radar transmission signal frequencies, each discrete frequency band encompassing a plurality of frequencies, the method comprising the steps of:
Dependencies are inferred from the claim text.