Method for improving FMCW radar speed detection precision through inter-cluster pulse fusion

The invention discloses a method for improving FMCW radar speed detection precision through inter-cluster pulse fusion, and the method comprises the steps: completing the distance dimension FFT of an (n-1) th cluster and an nth cluster, and obtaining distance dimension data sets R (n-1) and R (n); speed dimension FFT of the (n-1) th cluster and the nth cluster is completed, and distance-speed atlas data sets RD (n-1) and RD (n) are obtained; combining the data sets R (n-1) and R (n) to obtain a data set R (n) '; based on the R (n) ', the target speed is solved through a digital beam forming method, and a distance-speed atlas data set RD (n)' is obtained; the RD (n) 'is mapped to the RD (n), in the speed dimension, each piece of data in the RD (n) corresponds to two pieces of data in the RD (n) ', and the piece of data with the larger modulus value in the two pieces of data is selected as the final speed data.The target speed detection precision can be doubled under the condition that the speed refresh rate an