The GNSS receivers, which utilize RF signals from external navigation satellites to obtain position and time information are widely used for range safety as well as navigation in space launch vehicles. The GNSS antenna should be connected to the receiver and there are some limitations to install GNSS antennas on the surface of the space launch vehicle. Various antennas used for telemetry, tracking and flight termination are all required, but there are limited space to attach all those antennas. Since GNSS antennas deal with very low power signals, the interference problem due to other adjacent electrical systems should be considered. It is also necessary to minimize the blockage area of the antenna`s view due to its structure since the performance of GNSS receiver directly depends on the number of visible satellite. In this paper, the examples of the GNSS antennas of foreign space launch vehicle will be shown. Some conditions, environment to install the GNSS antennas are also mentioned. This survey will be refered to develop the GNSS receiver system for KSLV-II antenna design.

Keyword: GNSS receiver, GNSS antenna, interference, blockage, space launch vehicle (SLV)