Dictionary design method for improving MIMO radar target detection performance in complex scene

• Main Authors: WANG HONGYAN, ZHOU HE, MA JIAKANG, HUANG ZIFENG
• Format: Patent
• Language: Chinese; English
• Published: 09.01.2024
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

The invention discloses a dictionary design method for improving MIMO radar target detection performance in a complex scene, and belongs to the field of sparse representation. Establishing a co-located MIMO radar signal sparse representation model; acquiring a CAE model for nonlinear feature extraction and correction of the received data; constructing a joint optimization model based on a minimum reconstruction error and a target clutter correlation criterion; alternately updating CAE model parameters, target clutter dictionaries and corresponding sparse coefficients of the joint optimization model, and obtaining an optimal target clutter dictionary and a corresponding sparse coefficient; the method comprises the following steps: obtaining a receiving and transmitting space-time resource joint optimization model based on a least square criterion, solving the obtained optimization problem by a convex optimization method, and obtaining a CAE model capable of effectively correcting the nonlinear effect of MIMO r