Computationally Efficient DOA Tracking Algorithm in Monostatic MIMO Radar with Automatic Association

Table 1

Complexity comparison.

Algorithm	Computational complexity
PAST [25]	𝑂((3𝑀𝑁𝐾+𝐾^2)𝐽+3𝐾^2𝑀(𝑁−1)+𝐾^3)
PASTd [26]	𝑂((4𝑀𝑁𝐾+𝐾)𝐽+3𝐾^2𝑀(𝑁−1)+𝐾^3)
The proposed algorithm	𝑂((𝑀+𝑁−1)^2𝐽+2𝐾^2(𝑀+𝑁−2)+𝐾^3+2𝐾(𝑀+𝑁−2)+𝐾^2)