US 2025/0155552 A1 · MIMO Radar Apparatus

Abstract

A MIMO radar apparatus with a high angular resolution includes: a transmission device configured to transmit a MIMO radar waveform comprising circulating N waveforms forming the MIMO radar waveform through N transmission channels, N being an integer larger than 1, with a constant relative time shift between the circulating N waveforms; and a reception device configured to receive over N reception channels reception signals resulting from reflections of the transmitted MIMO radar waveform. The transmission device is configured to generate the MIMO radar waveform, generate a reference signal, and provide the reception device with the generated reference signal. The reception device is configured to perform IQ mixing of the reception signals based on the reference signal to obtain intermediate frequency signals and perform analog-digital conversion on the obtained intermediate frequency signals to obtain analog-digital converted reception signals.

Claims20

Dependent claims

A multiple-input-multiple-output (MIMO) radar apparatus, comprising:

a reception device;
and
a transmission device configured to:
generate a MIMO radar waveform comprising circulating N waveforms forming the MIMO radar waveform through N transmission channels with a constant relative time shift between the circulating N waveforms, where N is an integer larger than 1;
generate a reference signal;
transmit the MIMO radar waveform;
and
provide the reception device with the generated reference signal;
wherein the reception device is configured to:
receive, over N reception channels, reception signals resulting from reflections of the transmitted MIMO radar waveform;
perform IQ mixing on the reception signals based on the reference signal to obtain intermediate frequency signals;
and
perform analog-digital conversion on the obtained intermediate frequency signals to obtain analog-digital converted reception signals.

10 more elements

A method for detecting an object, comprising

generating, by a multiple-input-multiple-output (MIMO) radar apparatus, N waveforms for N transmission channels of the MIMO radar apparatus, where N is an integer larger than 1;
generating, by the MIMO radar apparatus, a reference signal and phase shifting the reference signal by 90° to obtain a phase shifted reference signal;
transmitting, by the MIMO radar apparatus, a MIMO radar waveform to the object, wherein the MIMO radar waveform comprises circulating the generated N waveforms forming the MIMO radar waveform through the N transmission channels with a constant relative time shift between the circulating N waveforms;
receiving, by the MIMO radar apparatus, over N reception channels of the MIMO radar apparatus, reception signals resulting from reflections of the transmitted MIMO radar waveform from the object;
performing, by the MIMO radar apparatus, IQ mixing on the reception signals based on the reference signal and the phase shifted reference signal to obtain intermediate frequency signals;
performing, by the MIMO radar apparatus, analog-digital conversion on the obtained intermediate frequency signals to obtain analog-digital converted reception signals;
and
processing, by the MIMO radar apparatus, the analog-digital converted reception signals to determine at least one of:
a location of the object,
distance of the object relative to the MIMO radar apparatus,
angle of the object relative to the MIMO radar apparatus,
direction of the object relative to the MIMO radar apparatus, or
velocity of the object relative to the MIMO radar apparatus.

10 more elements

A non-transitory computer-readable medium having processor-executable instructions stored thereon for detecting an object, wherein the processor-executable instructions, when executed, facilitate performance of the following

generating, by a multiple-input-multiple-output (MIMO) radar apparatus, N waveforms for N transmission channels of the MIMO radar apparatus, where N is an integer larger than 1;
generating, by the MIMO radar apparatus, a reference signal and phase shifting the reference signal by 90° to obtain a phase shifted reference signal;
transmitting, by the MIMO radar apparatus, a MIMO radar waveform to the object, wherein the MIMO radar waveform comprises circulating the generated N waveforms forming the MIMO radar waveform through the N transmission channels with a constant relative time shift between the circulating N waveforms;
receiving, by the MIMO radar apparatus, over N reception channels of the MIMO radar apparatus, reception signals resulting from reflections of the transmitted MIMO radar waveform from the object;
performing, by the MIMO radar apparatus, IQ mixing on the reception signals based on the reference signal and the phase shifted reference signal to obtain intermediate frequency signals;
performing, by the MIMO radar apparatus, analog-digital conversion on the obtained intermediate frequency signals to obtain analog-digital converted reception signals;
and
processing, by the MIMO radar apparatus, the analog-digital converted reception signals to determine at least one of:
a location of the object,
distance of the object relative to the MIMO radar apparatus,
angle of the object relative to the MIMO radar apparatus,
direction of the object relative to the MIMO radar apparatus, or
velocity of the object relative to the MIMO radar apparatus.

10 more elements

Dependencies are inferred from the claim text.

MIMO Radar Apparatus

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MIMO Radar Apparatus

Life of this patent

Abstract

Claims20