When passing through a tunnel, accurate positioning is not possible. For modules with inertial navigation, the position information is calculated based on the previous location data using the gyroscope. Time information can be obtained through self-timing, but the current firmware does not have this functionality.

When passing through a tunnel, accurate positioning is not possible. For modules with inertial navigation, the position information is calculated based on the previous location data using the gyroscope. Time information can be obtained through self-timing, but the current firmware does not have this functionality.

When passing through a tunnel, accurate positioning is not possible. For modules with inertial navigation, the position information is calculated based on the previous location data using the gyroscope. Time information can be obtained through self-timing, but the current firmware does not have this functionality.

When passing through a tunnel, accurate positioning is not possible. For modules with inertial navigation, the position information is calculated based on the previous location data using the gyroscope. Time information can be obtained through self-timing, but the current firmware does not have this functionality.

When passing through a tunnel, accurate positioning is not possible. For modules with inertial navigation, the position information is calculated based on the previous location data using the gyroscope. Time information can be obtained through self-timing, but the current firmware does not have this functionality.