Twice a day , the observatory releases a balloon carrying a radiosonde to measure temperatures aloft , up to ten kilometres or above 天文台每日两次发放探空气球，把无线电探空仪送上高空量度气温，高度可达10公里或以上。
Prior to this , some preparation of the radiosonde is required figure 9 . the processes that follow are all automatically carried out by the auss figure 10 经过预设工序图9后，其他所有工序均由该系统图10自动操作。
Both the radiosonde and the ground station are equipped with antennae for reception of gps signals from at least 4 satellites ( figure 1 ) 在探测过程中，无线电探空仪和地面站均装有gps天线，可接收最少4个卫星发出的信号。
Balloon automatically released by the automatic upper - air sounding system . the small box middle right , large photo attached to the balloon is a radiosonde 自动高空探测系统投放气球的一刻，系著的小盒子(大图右边中间位置)为无线电探空仪。
Unlike aircraft flights , measurement of meteorological parameters using radiosonde could reach an altitude of 30 , 000 metres before the balloon burst 探空气球可升至30公里高才爆裂，相对于用飞机探测的方法，无线电探空仪可探测更高层的大气资料。
Balloon automatically released by the automatic upper - air sounding system . the small box ( middle right , large photo ) attached to the balloon is a radiosonde 自动高空探测系统投放气球的一刻，系著的小盒子(大图右边中间位置)为无线电探空仪。
Using the differentials in reception of omega signals by the airborne radiosonde and the ground station , the position of the radiosonde and hence the wind vector was determined 在探测过程中，无线电探空仪由奥米茄站接收甚低频信号，并转播至京士柏地面站。
During an upper air sounding operation , a balloon filled with hydrogen carrying a radiosonde and a radar reflector was released . the ascent rate of the balloon was roughly 360 metres per minute 在进行高空探测时，氢气球上挂上一个无线电探空仪及一个雷达反射器，以每分钟360米左右的速度上升。
By extracting the necessary information in the gps signal and merging with the satellite orbital data , the position of the radiosonde and hence the wind vector is calculated 地面站接收到gps信号后会抽出所需资料，再加入有关卫星轨道的数据，便可计算出无线电探空仪的位置，从而计算出高空风向和风速。
