图森未来智驾方案解析：感知、定位、规划和数据闭环

Core Insights - The article emphasizes the importance of probabilistic perception and control in autonomous driving, advocating for a tight coupling between perception and control systems to enhance safety and decision-making [10][11][12]. Technical Approach - The core idea is to output a probability distribution rather than a single deterministic result, allowing the system to quantify its uncertainty and make informed decisions based on that uncertainty [10][11]. - The system should output key features of obstacles, including position, speed, size, and category, along with their uncertainties, which are crucial for safety decisions [11]. Challenges - Major challenges include algorithm limitations, sensor noise, and the inherent ambiguity of the environment, which can lead to uncertainty in perception [15]. - Developing algorithms that can naturally output probability distributions and optimizing planning and control algorithms to utilize uncertainty information effectively are critical [15]. Case Study - A case study illustrates the difference between traditional deterministic approaches and probabilistic outputs in handling a stationary vehicle potentially encroaching into the lane, highlighting the advantages of probabilistic decision-making [14][16]. Sensor Fusion and Localization - The article discusses the significance of multi-sensor fusion for precise localization, combining data from LiDAR, cameras, RTK GNSS, IMU, and wheel speed sensors to achieve robust positioning [46][47]. - The proposed solution includes a self-developed RTK GNSS tightly coupled localization scheme that enhances robustness against GNSS signal loss [49][53]. Prediction and Planning - The article outlines two main prediction methodologies: rasterized representation and vectorized representation, each with its strengths and weaknesses in modeling traffic interactions [60][65]. - A hybrid approach is suggested, utilizing both methods to adapt to different driving environments, ensuring effective modeling of structured and unstructured roads [75][77]. Control Strategies - The article introduces a closed-loop control system that adapts to real-time vehicle dynamics, enhancing robustness compared to traditional open-loop control methods [91][92]. - The system incorporates adaptive feedback control and online learning to continuously optimize control strategies based on vehicle performance and environmental conditions [99][100]. Simulation and Testing - End-to-end simulation is emphasized as a crucial component for testing the entire algorithm system, allowing for comprehensive evaluation and refinement of the autonomous driving framework [106][108].