| CPC G01S 7/40 (2013.01) [G01S 7/003 (2013.01); G01S 13/87 (2013.01)] | 20 Claims |
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1. A method comprising:
transmitting a global trigger to first and second millimeter-wave radars via a serial bus using a data line of a first serial interface circuit without using a signal line dedicated only to the global trigger, wherein a frequency of the global trigger is less than a frequency of a clock signal of the first serial interface circuit;
transmitting first data different from the global trigger to the first millimeter-wave radar via the serial bus using the first serial interface circuit;
transmitting second data different from the global trigger to the second millimeter-wave radar via the serial bus using the first serial interface circuit;
receiving the global trigger and the first data via the serial bus with the first millimeter-wave radar using a first local serial interface circuit;
receiving the global trigger and the second data via the serial bus with the second millimeter-wave radar using a second local serial interface circuit;
generating a first internal trigger of the first millimeter-wave radar after a first offset duration from the global trigger;
generating a second internal trigger of the second millimeter-wave radar after a second offset duration from the global trigger;
start transmitting first millimeter-wave radar signals with the first millimeter-wave radar based on the first internal trigger; and
start transmitting second millimeter-wave radar signals with the second millimeter-wave radar based on the second internal trigger, wherein the second offset duration is different from the first offset duration, and wherein the first and second millimeter-wave radar signals are transmitted sequentially so as to exhibit no temporal overlap.
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