CPC G08B 7/06 (2013.01) [G01S 5/02695 (2020.05); G01S 5/14 (2013.01); H04Q 9/00 (2013.01)] | 13 Claims |
1. An information processing system comprising a processor configured to execute operations comprising:
receiving, by the processor at a first point, a first intensity of a first radio wave from a second point at a predetermined time, wherein the first point is moving, and the second point is stationary;
receiving, by the processor at the first point, a second intensity of a second radio wave from a third point at the predetermined time, wherein the third point is stationary and is distinct from the second point;
transmitting, by the processor, to a fourth point, measurement results based on the first intensity of the first radio wave and the second intensity of the second radio wave, wherein the fourth point is distinct from the second point and the third point;
causing determining at the fourth point, a first distance between the first point and the second point and a second distance between the first point and the third point at the predetermined time;
causing determining at the fourth point, based at least on the first distance and the second distance, a position of the first point at the predetermined time, and
outputting, by the processor at the first point, based at least on a combination including the position of the first point and a speed according to a positional relationship between the first point and an obstacle, a warning information, wherein the warning information indicates the first point colliding with the obstacle.
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