Frequency Stitching for Radar Systems

A radar system comprising:

• a first transmitter;
• a second transmitter;
• a first receiver;
• a second receiver;
• and
• a processor electrically connected to the first and second transmitters and the first and second receivers, wherein the processor is configured to:
• determine a channel sequence for frequency stitching, wherein the channel sequence comprises a plurality of radio frequency (RF) channels, each RF channel having a respective carrier frequency and a bandwidth;
• divide the channel sequence into a first portion and a second portion;
• instruct the first transmitter to transmit, over a first time period, an RF signal on each RF channel of the first portion of the channel sequence;
• instruct the second transmitter to transmit, over a second time period, an RF signal on each RF channel of the second portion of the channel sequence, wherein the second time period at least partially overlaps with the first time period;
• and
• generate a frequency-stitched channel impulse response from reflected RF signals received at each receiver in response to the RF signals transmitted.

A method of performing a multi-transmitter frequency stitching process, the method comprising:

• determining a channel sequence for frequency stitching, wherein the channel sequence comprises a plurality of radio frequency (RF) channels, each RF channel having a respective carrier frequency and a bandwidth;
• dividing the channel sequence into a first portion and a second portion;
• transmitting, over a first time period, an RF signal on each RF channel of the first portion of the channel sequence using a first transmitter and a first antenna;
• transmitting, over a second time period, an RF signal on each RF channel of the second portion of the channel sequence using a second transmitter and a second antenna, wherein the second time period at least partially overlaps with the first time period;
• receiving, at a first receiver and a second receiver, reflected RF signals in response to the RF signals transmitted;
• and
• generating a frequency-stitched channel impulse response from the reflected RF signals received.