| 摘要 |
A system for identification of primarily man-made objects is described. A transponder at an object is arranged to be energized by an essentially infrared light beam at 700-1100 nm and sends messages to a reader via an information beam at 700-1100 nm. The transponder is powered by solar cells in crystalline silicon or copper indium selenide. The messages have a bit stream where a bit is represented with a pulse burst that has a pulse repetition frequency higher than 30 kHz. |
