Monostatic radar with progressive length transmission

A device for radar detection of objects in accordance with a transmission/reception configuration, the device comprising:

• a transceiver;
• a memory;
• and
• one or more processors communicatively coupled with the transceiver and the memory, wherein the one or more processors are configured to:
• transmit, via the transceiver, a first signal for a first duration corresponding to a first transmission window;
• receive, via the transceiver, a first reflection of the first signal from a first object during a second duration following the first duration, wherein the second duration defines a first detection range for the first signal and corresponds to a first reception window;
• transmit, via the transceiver, a second signal for a third duration, wherein:
• the third duration is longer than the first duration, follows the second duration, and corresponds to a second transmission window, and
• the third duration is determined based at least in part on a maximum range determined from a signal to noise ratio of the first signal;
• receive, via the transceiver, a second reflection of the second signal from a second object during a fourth duration following the third duration, wherein the fourth duration defines a second detection range for the second signal different from the first detection range and corresponds to a second reception window, wherein a third reflection of the second signal from the first object cannot be received entirely by the device during the second reception window, wherein according to the transmission/reception configuration, the first and second transmission windows are within a plurality of transmission windows of the transmission/reception configuration, wherein the first and second reception windows are within a plurality of reception windows of the transmission/reception configuration, and wherein the plurality of transmission windows and the plurality of reception windows do not overlap in time;
• and
• determine positions of the first object and the second object based on the first reflection and the second reflection.

An apparatus for radar detection of objects in accordance with a transmission/reception configuration, the apparatus comprising:

• means for transmitting a first signal for a first duration corresponding to a first transmission window;
• means for receiving a first reflection of the first signal from a first object during a second duration following the first duration, wherein the second duration defines a first detection range for the first signal and corresponds to a first reception window;
• means for transmitting a second signal for a third duration, wherein:
• the third duration is longer than the first duration, follows the second duration, and corresponds to a second transmission window, and
• the third duration is determined based at least in part on a maximum range determined from a signal to noise ratio of the first signal;
• means for receiving a second reflection of the second signal from a second object during a fourth duration following the third duration, wherein the fourth duration defines a second detection range for the second signal different from the first detection range and corresponds to a second reception window wherein a third reflection of the second signal from the first object cannot be received entirely by the apparatus during the second reception window, wherein according to the transmission/reception configuration, the first and second transmission windows are within a plurality of transmission windows of the transmission/reception configuration, wherein the first and second reception windows are within a plurality of reception windows of the transmission/reception configuration, and wherein the plurality of transmission windows and the plurality of reception windows do not overlap in time;
• and
• means for determining positions of the first object and the second object based on the first reflection and the second reflection.

A non-transitory computer-readable medium storing instructions for radar detection of objects in accordance with a transmission/reception configuration, the instructions comprising code for:

• transmitting, from a device, a first signal for a first duration corresponding to a first transmission window;
• receiving a first reflection of the first signal from a first object during a second duration following the first duration, wherein the second duration defines a first detection range for the first signal and corresponds to a first reception window;
• transmitting a second signal for a third duration, wherein:
• the third duration is longer than the first duration, follows the second duration, and corresponds to a second transmission window, and
• the third duration is determined based at least in part on a maximum range determined from a signal to noise ratio of the first signal;
• receiving a second reflection of the second signal from a second object during a fourth duration following the third duration, wherein the fourth duration defines a second detection range for the second signal different from the first detection range and corresponds to a second reception window wherein a third reflection of the second signal from the first object cannot be received entirely by the device during the second reception window, wherein according to the transmission/reception configuration, the first and second transmission windows are within a plurality of transmission windows of the transmission/reception configuration, wherein the first and second reception windows are within a plurality of reception windows of the transmission/reception configuration, and wherein the plurality of transmission windows and the plurality of reception windows do not overlap in time;
• and
• determining positions of the first object and the second object based on the first reflection and the second reflection.