| 主权项 |
1. A method for mitigating low duty factor electronic attack (EA) in a radar system, the method comprising:
receiving N pulses of radar return energy, the N pulses of radar return energy including jamming data from the low duty factor EA; digitizing the received N pulses of radar return energy; taking M samples of each of the digitized N pulses of the radar return energy; forming an M×N pulse sample data matrix (PSDM) using the M samples and digitized N pulses of the radar return energy, wherein each cell of the PSDM includes an in-phase and quadrature phase measurement of the radar return energy and jamming data from the low duty factor EA; defining a 2N×1 vector for each row of the PSDM, the 2N×1 vector separating the in-phase and quadrature phase measurements in each cell of the PSDM into a respective half of the 2N×1 vector; computing a 4N×1 vector, the 4N×1 vector separating the in-phase and quadrature phase measurements of the jamming data from the low duty factor EA into a respective half of the 4N×1 vector using the 2N×1 vector and a measurement matrix dictionary; extracting the jamming data from the 4N×1 vector; and forming a clean M×N PSDM using the 4N×1 vector, the clean PSDM being substantially free of the jamming data from the low duty factor EA. |
