Abstract
With the realization of global navigation satellite system (GNSS) completion, GNSS reflectometry (GNSS-R) has become increasingly popular due to the advantages of global coverage and the availability of multiple sources in terms of earth remote sensing. This paper analyzes the Beidou navigation satellite system (BDS) signal reflection detection of multiple satellites and multiple moving targets under multiple-input and multiple-output (MIMO) radar systems and proposes a series of methods to suppress multiple Doppler phase influences and improve the range detection property. The simulation results show the restored target peaks, which match the RCS data more accurately, with the GNSS-R Doppler phase influence removed, which proves the proposed method can improve target recognition and detection resolution performance.
Highlights
At the moment more than 70 satellites are already in view; this brings great opportunities and challenges for both scientific and engineering applications
To solve the multiple Doppler phase influences and restore the weakened target peak, we propose the multiple target Doppler compensation (MTDC) method, which compensates for the echoes with multiple Doppler phase sequences at the corresponding range code period position of targets and fetches the maximum value of the filter outputs as the compensation result
Because the resolution of B3I is near 30 m, each set of point targets was detected as a few light points in the delay–Doppler map (DDM), and according to the number of points set in each target, we identified that the highlights are target 3, target 2, and target 1, in order from the strongest to the weakest
Summary
At the moment more than 70 satellites are already in view; this brings great opportunities and challenges for both scientific and engineering applications. The different global navigation satellite system (GNSS) signals are compared and analyzed in the literature [1]. In terms of detection performance and signal characteristics. A four-system positioning model for multi-satellite detection is proposed in the literature [2]. Global navigation satellite system reflectometry (GNSS-R) detection has become a popular tool for earth remote sensing, such as multiple maritime targets detection, with its gradual improvement in observation technology. Time–frequency-transfer and time performance technology based on BDS systems have been implemented and evaluated [9,10]. With the increase in the demand for precise positioning, an increasing number of observational reports have been proposed with constant improvement of the positioning method. The literature [11,12] presents a real-time detection and point position method based on the combination of GPS and BDS observations
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
