This paper addresses the challenges of insufficient navigation accuracy, low path-planning efficiency, and poor environmental adaptability faced by deep space rovers in complex extraterrestrial environments (e.g., the Moon and Mars). A novel autonomous navigation scheme is proposed that integrates laser Doppler velocimetry (LDV) with star trackers (ST) and inertial navigation system (INS). The scheme suppresses slip errors from wheel odometry through non-contact, high-precision laser speed measurement (accuracy better than 0.1%). By deeply fusing multi-source data via a Kalman filter algorithm, high-precision positioning is realized under extreme extraterrestrial conditions such as weak illumination and dust coverage. This solution features high accuracy, non-contact measurement, and anti-interference capabilities, significantly improving the navigation accuracy and autonomy of deep space rovers in complex environments.

As the core information infrastructure of modern information warfare, the offensive and defensive confrontations of satellite navigation systems have given rise to navigation warfare, which focuses on seizing control of navigation resources. Based on the space segment, control segment, and user segment of satellite navigation systems, this paper systematically constructs an offensive-defensive technology system for navigation warfare, and deeply analyzes core measures such as signal enhancement and suppression, autonomous navigation and link jamming, anti-jamming reception, and integrated navigation. It extracts key technologies including adaptive nulling antennas, joint filtering, and multi-dimensional combined jamming, and discusses the technical effectiveness of these technologies by incorporating relevant cases. The advantages of navigation warfare stem from multi-segment coordination and technological integration. In the future, the development directions of navigation warfare will focus on three aspects: enhancing satellite capabilities, tackling core technical challenges, and building a multi-dimensional system.

Digital twin shows broad application prospects in the aerospace field. This paper introduces a generalized satellite digital twin system in detail. With the innovative design concepts of modularization, generalization and modeling, on the one hand, the system has successfully achieved the reuse of software modules among different satellite models; on the other hand, it has achieved the reuse of software modules between the digital twin and the testing system, significantly improving the development efficiency of the digital twin system. The paper elaborates on the technical architecture and application fields of this digital twin system, and further prospects its future development. At the same time, through a real in-orbit case, the engineering value of the digital twin system is strongly demonstrated.

The functions, applications, developments and current application mode of IDS3.x system are generally introduced in this paper. Then the development mode of spacecraft based on IDS3.x system is described. The existing problems especially the information redundancy of mechanical interface and their effects are pointed out. A new solution is proposed by developing 3D-IDS system. The central functions of 3D-IDS system are shown in this study. A new application mode of 3D-IDS system is explored and described by showing how to fill in, countersign and apply with 3D-IDS file. The 2D drawing and sketch are removed from 3D-IDS system to avoid information redundancy of mechanical interface. The consistency between 3D model and the parameters of IDS file can be guaranteed by the interface tool. The efficiency of filling in, countersigning and applying, has been improved significantly, which greatly promotes the coordination and total efficiency of spacecraft system design departments and unit design departments.

This article aims to provide a comprehensive analysis of the role and development prospects of direct satellite-to-phone technology in the global communication landscape. It explores the importance, current development status, key technical challenges, future directions, and countermeasures of this technology from multiple dimensions. The article explains the significance and necessity of direct satellite-to-phone technology in the global communication field, discusses its development background and importance as one of the key technologies in the 6G era, and outlines the research objectives, methodology, and structure of the paper. Additionally, the article reviews and analyzes the development history of direct satellite-to-phone technology on a global scale, discusses the key technical points in achieving this technology, and predicts its potential role and development direction in future communication systems from the perspective of 6G network architecture. It also explores new application scenarios and service models that may emerge from technological advancements, as well as their impact on future communication networks. The development history of direct satellite-to-phone technology and its role in current and future communication networks are emphasized, highlighting its value in promoting global communication infrastructure construction. The article also proposes improvement suggestions for existing issues and points out future research directions.

Navigation satellites generally use satellite-ground and inter-satellite observation data for precise orbit determination. In orbit determination, the satellite position is often referenced to the satellite’s centroid, while the observational measurements are referenced to the satellite’s antenna phase center. The deviation between the satellite’s centroid and the antenna phase center forms the satellite antenna phase center error, which affects the precision of orbit determination. This paper takes a global navigation satellite system (GNSS) MEO satellite as an example and analyzes the actual situation of the satellite antenna phase center deviation and phase center variation based on the ground calibration data of the in-orbit satellite antenna phase center and the satellite’s in-orbit working status. The analysis shows that the antenna phase center variation caused by the satellite’s in-orbit operation is only at the centimeter level, which has a limited impact on orbit determination accuracy. The main source of precise orbit determination error is the satellite antenna phase center deviation, which can be corrected using ground calibration data.

This paper first analyzes the vibration environment at the spacecraft/launch vehicle (SC/LV) interface during the powered flight phase. Second, it proposes a method to enhance satellite panel stiffness. Satellite frequency response analysis examines stiffness compatibility between the satellite (including its components) and the integrated launch stack. The environmental effect equivalence method then determines satellite ground verification test conditions. Ground test responses are compared with SC/LV coupling analysis results to ensure that ground tests envelope the coupling analysis results, confirming the adequacy of ground verification.

Pose estimation of spacecraft targets is a key technology for achieving space operation tasks, such as the cleaning of failed satellites and the detection and scanning of non-cooperative targets. This paper reviews the target pose estimation methods based on image feature extraction and PnP, the target estimation methods based on registration, and the spacecraft target pose estimation methods based on deep learning, and introduces the corresponding research methods.