Vehicular radar sensing system utilizing high rate true random number generator

A method for generating random binary values for a vehicle radar sensing system, said method comprising:

• providing a radar sensing system comprising a transmit pipeline comprising a plurality of transmitters configured for installation and use on a vehicle, and operable to transmit radio signals, and a receive pipeline comprising a plurality of receivers configured for installation and use on the vehicle, and operable to receive radio signals, wherein the received radio signals are transmitted radio signals that are reflected from an object;
• phase modulating the radio signals before transmission, as defined by a first binary sequence;
• sampling the received radio signals, wherein the sampling is performed by at least one analog to digital converter (ADC), and wherein the sampling produces least significant bit (LSB) outputs from the ADC;
• outputting a second binary sequence of bits with an equal probability of 1 and 0, wherein the second binary sequence of bits comprises a pseudorandom binary sequence;
• and
• defining the first binary sequence at least in part by (a) the least significant bit (LSB) outputs from the at least one ADC and (b) the second binary sequence of bits, wherein the first binary sequence comprises a truly random unbiased sequence of bits with an equal statistical probability of 1 and 0.

A radar sensing system for a vehicle, the radar sensing system comprising:

• a transmit pipeline comprising a plurality of transmitters configured for installation and use on a vehicle, and operable to transmit radio signals;
• a receive pipeline comprising a plurality of receivers configured for installation and use on the vehicle, and operable to receive radio signals, wherein the received radio signals are transmitted radio signals that are reflected from an object;
• wherein the transmit pipeline further comprises a phase modulator operable to phase modulate the radio signals before transmission, and wherein the phase modulation is defined by a first binary sequence;
• wherein the receive pipeline comprises at least one analog to digital converter (ADC) operable to sample the received radio signals, wherein the receive pipeline comprises at least one ADC for each receiver of the plurality of receivers;
• wherein the transmit pipeline further comprises a pseudorandom binary sequence (PRBS) generator operable to output a second binary sequence of bits with an equal probability of 1 and 0;
• wherein the transmit pipeline further comprises at least one logical operator;
• wherein least significant bit (LSB) outputs from the at least one ADC and the second binary sequence of bits are provided to the at least one logical operator;
• wherein the at least one logical operator is operable to at least XOR the LSB outputs and the second binary sequence of bits, and wherein an output of the at least one logical operator defines the first binary sequence;
• and
• wherein the first binary sequence comprises a truly random unbiased sequence of bits with an equal statistical probability of 1 and 0.