Navigation interference direction-finding antenna

• Main Authors: ZHAO SHIJIA, HOU YUELIN, GE JINGHUA, ZHAI XIONGZHI, ZHANG JIAN, LIU HUISEN, LI DONGDONG, LIU FENGSHOU, CHENG MING
• Format: Patent
• Language: Chinese; English
• Published: 27.12.2022
• 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 navigation interference direction-finding antenna which comprises an array antenna, a down-conversion module and a digital signal processing module. The array antenna is used for receiving a navigation interference vector signal, and the vector signal comprises arrival direction information of the navigation interference signal; the down-conversion module is used for converting a radio frequency signal received by the array antenna into an intermediate frequency signal; and the digital signal processing module estimates the arrival direction of navigation interference based on a frequency domain equalization algorithm. According to the method, a channel response function is compensated in a frequency domain based on a frequency domain equalization algorithm, that is, original time domain zero intermediate frequency signals are converted into frequency domain zero intermediate frequency signals through fast Fourier transform, and an array autocorrelation function is directly obtained