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US 11,949,763 B2Granted
System, device and method for data compression in a radar system
OwnerAmrith Sukumaran, G Ranjithkumar +1inventors
InventorsAmrith Sukumaran, G Ranjithkumar, Gireesh Rajendran
Life of this patent
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Abstract
According to an aspect, a method of data compression in a radar system comprising, converting a plurality of ranges in a first data form into a polar form, determining a plurality of logarithmic values of the plurality of ranges in the polar form, quantising the plurality of logarithmic values of the plurality of ranges with a first bit width that is fewer than a second bit width in the first data form. According to another aspect, the method further comprising quantizing the logarithmic magnitude part with a third bit width and quantising the logarithmic phase part with a fourth bit width.
Claims7
A method of data compression in a radar system comprising:
- transmitting a radar signal comprising a plurality of chirps over one or more transmitting antennas, wherein the radar signal is a radio frequency (RF) signal;
- receiving a reflected signal on a plurality of receiving antennas, the reflected signal is reflection of the radar signal by one or more objects;
- generating a plurality of intermediate frequency (IF) signals in a corresponding plurality of mixers, each mixer in the plurality of mixers receiving a reference signal and a corresponding one of signal from the plurality of receiving antennas;
- generating a plurality of ranges from the plurality of IF signals, wherein every range in the plurality of ranges is in a first data form with first bit width and number of ranges T in the plurality of ranges being equal to P X N X M, in that, P representing the number ranges for every chirp, N representing number of chirps in the plurality of chirps and M representing number of receiving antennas in the plurality of receiving antennas;
- converting every range in the plurality of ranges from the first data form into polar form to generate a corresponding plurality of polar ranges in polar form;
- converting every polar range in the plurality of polar ranges to logarithmic value to generate a plurality of logarithmic ranges;
- quantizing every logarithmic range in the plurality of logarithmic ranges with a second bit width that is fewer than the first bit width to form a plurality of compressed ranges,
- wherein number of the plurality of polar ranges, number of the plurality of logarithmic ranges and number of plurality of compressed ranges are equal to the number ranges T in the plurality of ranges.
5 more elements
A radar system comprising:
- a transmitting antenna transmitting a radar signal comprising a plurality of chirps, wherein the radar signal is a radio frequency (RF) signal;
- a plurality of receiving antenna receiving a reflected signal, the reflected signal is reflection of the radar signal by one or more objects;
- a plurality of mixers mixing a reference signal and a corresponding one of signal from the plurality of receiving antennas to generating a plurality of intermediate frequency (IF) signals;
- a plurality of analog to digital convertor (ADC) sampling the plurality of IF signals to to generate a plurality of digital samples of the plurality of IF signals;
- a range generator configured to generate a plurality of ranges from the plurality of samples of a reflected radio frequency (RF) signal wherein number of ranges T in the plurality of ranges being equal to P X N X M, in that, P representing the number ranges for every chirp, N representing number of chirps in the plurality of chirps and M representing number of receiving antennas in the plurality of receiving antennas;
- a polar convertor converting every range in the plurality of ranges from the first data form into polar form to generate a corresponding plurality of polar ranges in polar form;
- a logarithmic (Log) convertor converting every polar range in the plurality of polar ranges to logarithmic value to generate a plurality of logarithmic ranges;
- and
- a quantiser quantizing every logarithmic range in the plurality of logarithmic ranges with a second bit width that is fewer than the first bit width to form a plurality of compressed ranges
- wherein number of the plurality of polar ranges, number of the plurality of logarithmic ranges and number of plurality of compressed ranges are equal to the number ranges T in the plurality of ranges.
7 more elements
Dependencies are inferred from the claim text.