Frequency domain signal reflectometer based on digital signal processing

• Main Authors: LIU TING, LI BANGXU
• Format: Patent
• Language: Chinese; English
• Published: 16.04.2021
• Subjects: CONTROL OR REGULATING SYSTEMS IN GENERAL; CONTROLLING; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS; PHYSICS; REGULATING; TESTING; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR

The invention discloses a frequency domain signal reflectometer based on digital signal processing, which belongs to the technical field of signal reflectometers and comprises a signal reflectometer body, an operation panel is arranged on the front surface of the signal reflectometer body, and a digital-to-analog conversion chip and a voltage-controlled crystal oscillator are arranged at the top of the inner wall of the signal reflectometer body. And the right side surface of the voltage-controlled crystal oscillator is fixedly connected with the right side surface of the inner wall of the signal reflectometer body. According to the invention, continuous electromagnetic waves and coherent reception are adopted, digital fast Fourier transform is carried out on received signals, reflection information of the electromagnetic waves on a propagation path in the space is obtained, a continuous electromagnetic wave signal source is adopted, coherent detection is used, and echo signals are amplified. Under the condit