定义1(一个mn,ω, λ_a,λ_c)二维光正交码就是由一组元素为0或1,重量为ω的m×n矩阵组成的集合,并且每个矩阵A=[a (i、j)]的循环自相关函数和任意两个相异矩阵A=[a(i、j)]与B=[b(i、j)]之间的循环互相关函数分别满足:当0≤σ≤m-1,0≤τ≤n-1,(σ,τ)≠(0,0)时, Definition 1 (a mn, ω, λ_a, λ_c) A 2D Orthogonal Code is a set of m × n matrices of elements 0 or 1 and weight ω, and each matrix A = [a (i , The cyclic autocorrelation function and the cyclic cross-correlation function between any two dissimilar matrices A = [a (i, j)] and B = [b (i, j)] are satisfied respectively when 0 ≦ σ ≦ m-1, 0 ≦ τ ≦ n-1, and (σ, τ) ≠ (0,0)