A low drop-out voltage regulator having soft-start. In an embodiment, airborne Doppler wind LIDAR data software written in Lab VIEW may be provided and may run two versions of different airborne wind profiling algorithms. An opening is provided for a pump connection, the opening being arranged in a position neighboring the wall in a shell wall of the outer tube. The sleeve engages around and guides the section. The first order phase shaper and the second order phase shaper compensate for the signal loss caused by a signal cable coupled to the output port and provide a frequency band from DC to at least 15 GHz and a transient response having less than ten percent pre-shoot.