Space-based space debris distance measuring method and system

• Main Authors: HU XIAODONG, SU XIUQIN, ZHU WENHUA, TIAN YUAN, HAO WEI
• Format: Patent
• Language: Chinese; English
• Published: 31.01.2023
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; GYROSCOPIC INSTRUMENTS; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; MEASURING DISTANCES, LEVELS OR BEARINGS; NAVIGATION; PHOTOGRAMMETRY OR VIDEOGRAMMETRY; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; SURVEYING; TESTING

The invention belongs to the field of distance measurement, relates to a space-based space debris distance measurement method and system, and solves the problem that an existing space-based space debris observation system cannot perform high-precision measurement on space debris. The system comprises a pseudo-random coding photon counting laser ranging subsystem, a femtosecond optical frequency comb spectral resolution interference ranging subsystem and a data processing unit. During in-orbit operation of the ranging system, the tracking and capturing system performs passive tracking on space debris and provides prior azimuth information of a target to the system, and the guiding system points to the target and emits measurement pulse laser to the target. A part of laser reflected by the target is divided into two parts, and one part enters the pseudo-random coding photon counting laser ranging subsystem to realize wide-range rough measurement of the target. And the other part enters the femtosecond optical f