Near-field terahertz bistatic-synthetic-aperture one-dimensional imaging method

The invention relates to a near-field terahertz bistatic-synthetic-aperture one-dimensional imaging method. The method is used for eliminating the phase error caused by separation of a transmitting-terminal local oscillator and an echo-receiving-terminal local oscillator, and is characterized by including the following steps that 1, a near field imaging scene is set; 2, a real echo signal and a real reference signal are collected; 3, the real echo signal and the real reference signal are respectively processed, and a real echo medium-frequency signal and a real reference medium-frequency signal are obtained; 4 and 5, the real echo medium-frequency signal and the real reference medium-frequency signal are transformed through Hilbert transformation into a complex echo medium-frequency signal and a complex reference medium-frequency signal, mixing is carried out, and a mixed signal is obtained; 6, the mixed signal is corrected with a phase factor compensation method, a wavenumber domain signal is obtained, mapped into a space domain and calculated, a one-dimensional function expression for the target point estimation scattering coefficient is obtained, and one-dimensional imaging is completed.