中文说明：
非线性最小二乘优化问题以误差的平方和最小为准则来估计非线性静态模型参数的一种参数估计方法。设非线性系统的模型为y=f(x，θ)，常用于传感器参数设定。
English Description：
The nonlinear least squares optimization problem is a parameter estimation method for nonlinear static model based on the minimum sum of squares of errors. Let the model of nonlinear system be y = f (x, θ), which is often used to set sensor parameters.