US 12,196,843 B2 · Methods and systems for radar waveform diversity

Abstract

Example embodiments relate to techniques for implementing radar waveform diversity. A technique may involve a radar unit transmitting radar signals into an environment of a vehicle based on a code sequence that indicates a ramp direction and a phase shift for each pulse in a pulse used by the radar unit and receiving radar reflections from the environment. In some instances, the radar unit may leverage antennas in a multiple input multiple output (MIMO) arrangement to further add diversity to transmissions according to spatial code in the code sequence. The technique can further involve using a demodulator to map the environment based on the radar reflections and controlling the vehicle based on the mapping. In some instances, the code sequence is received from a system that is wirelessly providing orthogonal code sequences to multiple emitters.

Claims20

Dependent claims

A method comprising:

causing, by a computing device positioned on a vehicle, a first radar unit to transmit radar signals into an environment based on a first code sequence and a second radar unit to transmit radar signals into the environment based on a second code sequence, wherein each code sequence indicates a ramp direction and a phase shift for each pulse in a pulse chain used by the first radar unit or the second radar unit for radar signal transmission, and wherein the first code sequence and the second code sequence are different;
receiving, by the computing device and from the first radar unit and the second radar unit, radar reflections representing the environment;
mapping, by the computing device using a demodulator, the environment based on the radar reflections;
and
controlling the vehicle based on mapping the environment.

2 more elements

A system comprising:

a first radar unit and a second radar unit coupled to a vehicle;
and
a computing device configured to:
cause the first radar unit to transmit radar signals into an environment based on a first code sequence and the second radar unit to transmit radar signals into the environment based on a second code sequence, wherein each code sequence indicates a ramp direction and a phase shift for each pulse in a pulse chain used by the first radar unit or the second radar unit for radar signal transmission;
receive, from the first radar unit and the second radar unit, radar reflections representing the environment;
map, using a demodulator, the environment based on the radar reflections;
and
control the vehicle based on mapping the environment.

5 more elements

Dependencies are inferred from the claim text.

Methods and systems for radar waveform diversity

Life of this patent

Methods and systems for radar waveform diversity

Life of this patent

Abstract

Claims20