Precise Orbit Determination for BeiDou GEO/IGSO Satellites during Orbit Maneuvering with Pseudo-Stochastic Pulses

Abstract

In order to provide better service for the Asia-Pacific region, the BeiDou navigation satellite system (BDS) is designed as a constellation containing medium earth orbit (MEO), geostationary earth orbit (GEO), and inclined geosynchronous orbit (IGSO). However, the multi-orbit configuration brings great challenges for orbit determination. When orbit maneuvering, the orbital elements of the maneuvered satellites from broadcast ephemeris are unusable for several hours, which makes it difficult to estimate the initial orbit in the process of precise orbit determination. In addition, the maneuvered force information is unknown, which brings systematic orbit integral errors. In order to avoid these errors, observation data are removed from the iterative adjustment. For the above reasons, the precise orbit products of maneuvered satellites are missing from IGS (international GNSS (Global Navigation Satellite System) service) and iGMAS (international GNSS monitoring and assessment system). This study proposes a method to determine the precise orbits of maneuvered satellites for BeiDou GEO and IGSO. The initial orbits of maneuvered satellites could be backward forecasted according to the precise orbit products. The systematic errors caused by unmodeled maneuvered force are absorbed by estimated pseudo-stochastic pulses. The proposed method for determining the precise orbits of maneuvered satellites is validated by analyzing data of stations from the Multi-GNSS Experiment (MGEX). The results show that the precise orbits of maneuvered satellites can be estimated correctly when orbit maneuvering, which could supplement the precise products from the analysis centers of IGS and iGMAS. It can significantly improve the integrality and continuity of the precise products and subsequently provide better precise products for users.

Performance Assessment of a Turn Around Ranging in Communication Satellite Orbit Determination

“…x= cos cos (4) y= cos sin (5) z= sin (6) where, is the range of the satellite, : azimuth angle : elevation angle, x, y, z : coordinate of the range between station and the satellite Figure 2(a) presents azimuth and elevation measurement of a satellite, the left vertical axis shows elevation angle data, and the right vertical axis shows azimuth angle data; Figure 2(b) shows station to satellite range and station to station range via satellite measurement of a satellite, the left vertical axis provides station to satellite range in km, and the right vertical axis provides station to station via satellite range in km. The horizontal axis is the observation number from one to forty-eight.…”

“…Satellite laser ranging system uses laser light for range measurement [5]. Precise orbit determination of GEO satellites during orbit Maneuvering [6], autonomous orbit determination and orbit control for GEO satellite-based on a neural network [7], orbit determination of geostationary satellite during maneuver [8], sequential orbit determination for geostationary satellites operations [9] are most utilized orbit determination methods.…”

BDS Orbit Maneuver Detection Based on Epoch-Updated Orbits Estimated by SRIF

“…GEO and IGSO satellites have a greater frequency of orbit maneuvers in comparison to MEO satellites due to the resonance effect induced by the earth's rotation [5]. The BeiDou Satellite Navigation System (BDS) is comprised of GEO, IGSO, and MEO satellites, resulting in a much higher frequency of orbit maneuvers in comparison to other satellite navigation systems [3,6,7].…”

Prediction of BeiDou Satellite Orbit Maneuvers to Improve the Reliability of Real-Time Navigation Products

“…Huang et al detected the start time of orbital maneuvers by using single point positioning (SPP) technology and residual values of a pseudo-range [19,20]. Qin et al detected the orbit maneuvering time period by backward prediction of orbit and pseudorange and determined the orbit for maneuvered satellites [21,22]. Numerous studies have investigated orbit maneuver detection and determination; however, there is a lack of studies specifically focusing on predicting orbit maneuvers.…”