I think China doesn't have a domestic player in the drone chip domain.
Here is the main chip
Texas Instruments OPT3101 ToF Sensor
The Texas Instruments OPT3101 Time of Flight (ToF) sensors are high-speed, high-resolution analog front ends (AFEs) for ToF-based continuous wave proximity and ranging sensors. These sensors integrate a complete deep processing pipeline including ADC, timing sequencer, and digital processing engine. The OPT3101 ToF sensor also includes a built-in illumination driver to cover most target applications. Features of these sensors include long-range distance measurement, extended range with anti-aliasing techniques, obstacle detection and avoidance, and up to 4kHz sampling rates. Typical applications include conveyor systems, factory automation, harsh environments, drones, vacuum cleaners, lawn mowers, robots, smoke detectors, and emergency exits.
Texas Instruments OPT3101 ToF传感器
Texas Instruments OPT3101飞行时间 (ToF) 传感器是高速、高分辨率模拟前端(AFE),用于基于ToF的连续波接近传感和测距传感器。这些传感器集成了完整的深度处理管道,包括ADC、时序序列器和数字处理引擎。OPT3101 ToF传感器还包括 内置照明驱动器,可涵盖大部分目标应用。这些传感器的特性包括远距离距离测量、通过去混叠技术扩展距离范围、障碍物检测和躲避以及高达4kHz采样速率。典型应用包括传送带系统、工厂自动化、恶劣环境、无人机、真空吸尘器、割草机、机器人、烟雾探测器和应急出口。