Terahertz high-speed target radar imaging method

• Main Authors: WANG PING, ZHONG FULUAN, CHENG MEIHUA, ZHENG GUANGYU, XIAO JIAN
• Format: Patent
• Language: Chinese; English
• Published: 16.04.2019
• 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 relates to a terahertz high-speed target radar imaging method. The terahertz high-speed target radar imaging method comprises the following steps that rotary parameters are estimated based on narrow-band mode radar measurement and data storage; a multi-channel wide-narrow band linear frequency modulation signal is transmitted by radar, pulse compression is carried out by means of a de-sloping processing mode, and a target is detected and high-resolution imaging is carried out; translational compensation is performed on echo signals under different motion conditions; and self-adaptive compensation imaging is performed on a non-uniform-speed rotary table model. In the target movement process, the relative radar tension angle is greatly changed, so that the Doppler speed of thetarget is changed sharply, and therefore, the rotary table model is adopted for processing. A system narrow-band working mode is used for measuring target distance, speed and angle information, the angular velocity and the an