2019 International Multi-Conference on Engineering, Computer and Information Sciences (SIBIRCON) | 2019
Discrete Model of Earth Reflectivity for Land Clutter Simulation
Abstract
Simulation of the radar environment includes the formation of target signals and interference, a significant part of which is land clutter. The paper considers the task of reducing the amount of computation for the land clutter modeling for ground-based omnirange radars. The use of discrete distribution of the earth surface reflective properties to simulate echo signals leads inevitably to the errors in setting the parameters of the simulated signal. The sampling frequency is inversely proportional to the error power, but with the number of samples growth, the number of computation increases. The article presents methods for converting an initial array of discrete reflectors into another array with fewer elements. The developed methods are based on the algorithms of the signal processing in the frequency domain. Using the converted array makes possible the calculating the echo signal parameters with the same accuracy but with fewer calculations. The results obtained can be used in the development of simulation equipment to test the radar performance.