Near-field broadband RCS (Radar Cross Section) data acquisition and compression method based on basis pursuit denoising

The invention provides a near-field broadband RCS (Radar Cross Section) data acquisition and compression method based on basis pursuit denoising. Through random down sampling in azimuth and elevation, the actual total measurement amount of the RCS data is reduced, in a condition in which the integrity of electromagnetic scattering characteristic information of a radar target is ensured not to be much lost, the measurement time for the RCS data of an observed target by the radar system is shortened, and thus, the working efficiency of the overall measurement system is improved. According to the basis pursuit denoising model, a sparse reconstruction algorithm combining a near-field broadband RCS data processing operator is used for realizing data compression on echo domain RCS data, loss of the electromagnetic scattering characteristic information of the radar target during the data compression process can be reduced, the calculation complexity and the memory loss of the compression algorithm can be further red