Robust deceptive interference suppression method under array error

• Main Authors: GONG YANYUN, AWAKA, HAN CHUANG, WANG YUEXIAN, XIE JIAN, WANG LING, TAO MINGLIANG, WANG MENG, ZHANG ZHAOLIN, YANG XIN
• Format: Patent
• Language: Chinese; English
• Published: 02.08.2022
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; CALCULATING; COMPUTING; COUNTING; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; ELECTRIC DIGITAL DATA PROCESSING; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

The invention provides a robust deception interference suppression method under array errors, which comprises the following steps of: receiving data by adopting an array antenna, carrying out de-spreading processing, and selecting a proper threshold, so as to judge whether deception interference exists in the received data or not; a steering vector of a signal and a steering vector of a deception jamming signal can be distinguished according to a normalization coefficient of a normalized steering vector, a signal subspace and a jamming subspace are established according to steering vector information of all received signals, and jamming signal suppression and expected signal shape preservation are completed by oblique projection from the jamming subspace to the signal subspace. According to the method, the received signal is despread to obtain the signal steering vector, and the error of subspace establishment caused by inaccurate angle estimation is avoided. The deception jamming can be distinguished when th