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Article
APOD mission status and preliminary results
On September 20th, 2015, twenty satellites were successfully deployed into a near-polar circular orbit at 520 km altitude by the Chinese CZ-6 test rocket, which was launched from the TaiYuan Satellite Launch C...
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Chapter and Conference Paper
Orbit Maneuver Detection Based on Space-Based Angle Innovation
Methods of orbit maneuver detection of space targets are studied in this paper based on the space-based angle measurement innovation, which aim to acquire a real-time or nearly real-time awareness of space orb...
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Chapter and Conference Paper
GNSS Performance Research for MEO, GEO, and HEO
GNSSs such as GPS, GLONASS, Galileo, and Beidou have demonstrated to be a valid and efficient system for various space applications in LEO. Since the 1990s precise GNSS-based positioning of GEO, MEO, HEO, and ...
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Chapter and Conference Paper
GNSS Satellite Observations with Interference Measurement Technology
Interference measurement Technology has been proved as a very good space geodetic technique used to determine the Earth Orientation Parameters (EOP), the Terrestrial Reference Frame (TRF), and the Celestial Re...
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Chapter and Conference Paper
High Precision Determining and Predicting of Earth Orientation Parameters for Supporting Spacecraft Navigation
Earth Orientation Parameters (EOP) are essential for spacecraft navigation missions, such as deep space navigation and GNSS navigation mission, directly affecting navigation accuracy of spacecraft. First, this...
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Chapter and Conference Paper
Orbit Determination Using Combined GPS + Beidou Observations for Low Earth Cubesats: Software Validation in Ground Testbed
Nowadays, satellites in low earth orbit (LEO) can benefit from Global Navigation Satellite System (GNSS), such as Global Positioning System (GPS) of United States, to estimate positions and velocities. As Chin...
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Chapter and Conference Paper
Earth Polar Motion Parameters High Accuracy Differential Prediction
This paper proposes a method of Earth polar motion parameters prediction by dual differential least-squares (LS) and autoregressive (AR) model. Firstly, polar motion parameters are processed by dual differenti...
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Chapter and Conference Paper
New Results of Multi-GNSS Orbits Validation Based on SLR Observations
Nowadays there are more than 30 GNSS satellites equipped with laser retro-reflectors. Orbits of these satellites can be independently validated with a high precision using range observations by satellite laser...
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Chapter and Conference Paper
Study of Toutatis Imaging Illumination and Integrity Based on Chang-E II Flyby Navigation Relation
On December 13, 2012, China’s Chang’E II spacecraft successfully flew by the asteroid Toutatis, and obtained a series of clear optical images on Toutatis surface, which is China’s first asteroid detection and ...
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Chapter and Conference Paper
Research on Feature Extraction Method of No-Modeling System Error in BeiDou Orbit Determination Residual
BeiDou navigation satellite precise orbit determination is one of the key technologies in BeiDou satellite navigation system application. To analyze the no-modeling system error in BeiDou navigation satellite ...
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Chapter and Conference Paper
Simple Precise Time Signal Delivery Over Fiber Link Scheme
The capability of transferring time signal to remote locations with high stability and accuracy for synchronization is crucial for many important occasions, involving very long-baseline interferometry, coheren...
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Chapter and Conference Paper
Multi-GNSS Processing Combining GPS, GLONASS, BDS and GALILEO Observations
Coexistence and development of four kinds of Global Satellite Navigation System, GPS, GLONASS, BDS, and GALILEO have initially established. In order to benefit from multi-GNSS applications, including increase ...
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Chapter and Conference Paper
Integrated XNAV/Inter-Satellite Measurement Navigation Algorithm for Spacecraft Formation
Due to the increasing requirement of autonomous navigation for spacecraft formation, an integrated navigation algorithm based on XNAV and inter-satellite measurement is suggested. First, the navigation system ...
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Article
Sliding polynomial modeling with equality constraints
Sliding polynomial modeling has undergone considerable development and has been widely applied to dynamic modeling. One focus of the polynomial model is to make efficient use of prior information, which can al...
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Chapter and Conference Paper
Lunar Satellite Orbit Measurement Based on Visual/Radio Fusion
A set of new orbit Measurement method was proposed based on the integration of high-resolution lunar surface imaging and ground-based radio measurement. Through the method, the advantage of stable tracking by ...
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Article
Pre-LOI trajectory maneuvers of the CHANG′E-2 libration point mission
This paper addresses pre-LOI (before Lissajous orbit insertion) trajectory maneuvers for the libration point mission of CHANG′E-2, which is the first Chinese satellite to fly to the Sun-Earth L2 libration poin...
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Chapter and Conference Paper
Processing Method and Verification of Local Correlation for Spacecraft DOR Signals
Differential One-way Ranging (DOR) is an interferometry method to obtain high precision delay in deep space exploration. Two stations track the same spacecraft to obtain high precision deep space spacecraft’s ...
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Chapter and Conference Paper
The Antenna Up-To-Down Gain Ratio Design for Multipath Mitigation of GNSS Reference Station Receivers
Multipath is one of the dominant causes of error in pseudorange observations for GNSS (Global Navigation Satellite Systems) reference station receivers whose multipath mitigation performances are related to fo...
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Article
Chang’E-1 orbiter discovers a lunar nearside volcano: YUTU Mountain
In the day time of the Moon surface, the strong illumination from high altitude and high albedo rate radical craters will introduce the illumination effect on observing the nearby low altitude, low albedo rate...
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Article
New features of the Moon revealed and identified by CLTM-s01
Previous analyses showed a clear asymmetry in the topography, geological material distribution, and crustal thickness between the nearside and farside of the Moon. Lunar detecting data, such as topography and ...
