A two-dimensional periodic signal S(x, y) generated by the combination of two sinusoids, is modeled by: S(x, y) = e(y+2) cos(3(x+3)) + e-(x+3)2 cos(3(y + 2)). The emitter is hidden somewhere in a 12 12 km field, marked from -6 to 6km in each direction. Find the location of the emitter with matlab. Describe the methods and the choice of optimization method. Explain the choices of initial conditions and include the coordinates of the emitter location and graphs to support the answer with matlab.