A solar altimeter is a precision instrument that combines barometric altitude measurement with photovoltaic power, delivering continuous elevation data without battery changes. This device combines precise laser ranging with an integrated photovoltaic power generation system, collecting sunlight as energy to provide accurate and real-time height or ground clearance measurements for drones, sounding rockets, cube satellites, and ground robots.Advantages: Photovoltaic cells eliminate on-site battery exchange; Multi source altitude verification, fusion of atmospheric data and GNSS to improve accuracy; Environmentally hardened, impact resistant, waterproof, and UV resistant, suitable for deployment in high mountains, deserts, and oceans; Expand autonomy, solar trickle charging+low-power MCU provides year-round operation.