CC2640中AOA的i/q采集脚本中的offset代表什么？

看定义：

typedef struct __attribute__((packed))

{

 int8_t  rssi;                 //!< Rssi for this antenna

 uint8_t antenna;              //!< Antenna array used for this result

 uint8_t channel;              //!< BLE data channel for this measurement

 uint16_t offset;              //!< Offset in RAW result (size of samples[])

 uint16_t samplesLength;       //!< Expected length of entire RAW sample

 AoA_IQSample samples[];       //!< The data itself

} rtlsAoaResultRaw_t;