A wind parameter indication device for providing wind speed and wind direction to a remotely located receiver, wherein said device is configured to be ejected in midair to fall along an aerial trajectory from a landing approach height until a ground surface, said device comprising: a compass, operative to continuously obtain direction measurements along said trajectory; an anemometer, operative to continuously obtain local wind speed and local wind direction measurements along said trajectory using the direction measurements obtained by said compass; and an altimeter, operative to continuously obtain altitude measurements along said trajectory, characterized in that said device further comprises: a processor, coupled with said anemometer, with said altimeter, and with said compass, said processor operative to determine the altitude measurement corresponding to at least one predetermined altitude of said device relative to said ground surface, after said device has reached said ground surface, and to then determine a wind speed value and a wind direction value associated with said at least one predetermined altitude based on the obtained measurements; and a transmitter, coupled with said processer, said transmitter operative to transmit said wind speed value and said wind direction value associated with said at least one predetermined altitude to said remotely located receiver. a compass, operative to continuously obtain direction measurements along said trajectory; an anemometer, operative to continuously obtain local wind speed and local wind direction measurements along said trajectory using the direction measurements obtained by said compass; and an altimeter, operative to continuously obtain altitude measurements along said trajectory, characterized in that said device further comprises: a processor, coupled with said anemometer, with said altimeter, and with said compass, said processor operative to determine the altitude measurement corresponding to at least one predetermined altitude of said device relative to said ground surface, after said device has reached said ground surface, and to then determine a wind speed value and a wind direction value associated with said at least one predetermined altitude based on the obtained measurements; and a transmitter, coupled with said processer, said transmitter operative to transmit said wind speed value and said wind direction value associated with said at least one predetermined altitude to said remotely located receiver. a processor, coupled with said anemometer, with said altimeter, and with said compass, said processor operative to determine the altitude measurement corresponding to at least one predetermined altitude of said device relative to said ground surface, after said device has reached said ground surface, and to then determine a wind speed value and a wind direction value associated with said at least one predetermined altitude based on the obtained measurements; and a transmitter, coupled with said processer, said transmitter operative to transmit said wind speed value and said wind direction value associated with said at least one predetermined altitude to said remotely located receiver.