System and method for generating transmitted signals of a Stepped Frequency Continuous Wave radar

A method for preventing interference between signals of a stepped frequency continuous wave (SFCW) radar system and signals of another radar system, the method comprising:

• generating a randomized order of a set of frequencies selected from a predetermined group of frequencies to be used by output signals of the SFCW radar system;
• transmitting a plurality of output signals from a multi-channel RF transceiver of the SFCW radar system, the plurality of output signals comprising a plurality of signal scans, each signal scan including an output signal in each frequency of said set of frequencies, said frequencies of said output signals being in accordance with the randomized order;
• receiving at the multi-channel RF transceiver a plurality of input signals;
• and
• processing the input signals provided by the multi-channel RF transceiver.

A stepped frequency continuous wave (SFCW) radar system, comprising:

• a multi-channel radio frequency (RF) transceiver including a reference channel;
• a transmitting antenna transmitting a plurality of output signals from the multi-channel RF transceiver, the plurality of output signals comprising a plurality of signal scans, each signal scan including multiple output signals each having a specific frequency selected from a predetermined group of frequencies;
• a receiving antenna providing to the multi-channel RF transceiver input signals received thereby;
• and
• a controller, controlling generation of the output signals to be transmitted by the multi-channel RF transceiver, and processing the input signals provided by the multi-channel RF transceiver, the controller comprising a stepping modification module for randomizing an order of said multiple output signals having frequencies from the predetermined group of frequencies, within at least one of the plurality of signal scans, in order to reduce or prevent interference in said multiple output signals,
• wherein, in said reference channel, the input signal received by the receiving antenna comprises one of the plurality of output signals transmitted from the transmitting antenna.