2 results about "Satellite laser ranging" patented technology

The application provides a laser attitude measurement and identification method with reflector layout optimization, comprising the following steps: installing multiple L-shaped laser corner reflectors, obtaining the measurement distance difference of the multiple laser corner reflectors based on satellite laser ranging, taking the spacing ratio of the multiple laser corner reflectors arranged in a same line as an identity code, defining and calculating the discriminant of the measurement distance difference in sequence, taking the invariant of the discriminant as the matched identity code, determining the target identity and the reflection sequence, determining the one-to-one correspondence between the ranging data and the laser corner reflectors according to the reflection sequence, respectively calculating the included angle between the two baselines and the measurement direction vector, and then combining the coordinates of the station and the target carrier to perform attitude calculation and obtain the attitude of the target carrier. The application realizes the rapid identification of the satellite and the real-time measurement of the complete attitude by the special arrangement of the laser corner reflectors and the satellite laser ranging data.

This invention relates to the interdisciplinary fields of satellite navigation and satellite dynamics. Specifically, it presents a GRACE-FO orbit determination accuracy assessment method with fixed integer ambiguity. Based on onboard GPS observations, it generates floating-point solutions and IAR fixed-solution orbits using kinematic, simplified dynamics, and dynamic methods, respectively. Using the JPL PSO precise orbit as a reference, it statistically analyzes the three components of the RTN and the three-dimensional position difference (RMS). Simultaneously, it utilizes the K-band inter-satellite ranging (KBR) and satellite laser ranging (SLR) residuals for external verification and conducts frequency domain error spectrum analysis to characterize the error variation with frequency. The quantitative results of this invention can provide a basis for the selection of IAR application strategies and accuracy assessment for low-Earth orbit satellites.