问题描述：
英语翻译
Installation of the GPS antenna is critical for the performance of the built in GPS receiver which is used for timing of the transmitted time slots and for the supply of navigational information should the main navigational GPS fail.We strongly recommend that:
1.The GPS antenna is mounted in an elevated position and free of shadow effect from the ship’s superstructure
2.The GPS antenna has a free view through 360 degrees with a vertical angle of 5 to 90 degrees above the horizon.
3.As the received GPS signal is very sensitive to noise and interference generated by other onboard transmitters,ensure that the GNSS antenna is placed as far away as possible from radar,Inmarsat and Iridium transmitters and ensure the GPS antenna is free from direct view of the radar and the Inmarsat beam.
4.It is also important that the MF/HF and other VHF transmitter antennas are kept as far away as possible from the GNSS antenna.It is good practice never to install a GNSS antenna within a radius of 5 meters from these antennas.
Installation of the GPS antenna is critical for the performance of the built in GPS receiver which is used for timing of the transmitted time slots and for the supply of navigational information should the main navigational GPS fail.We strongly recommend that:
1.The GPS antenna is mounted in an elevated position and free of shadow effect from the ship’s superstructure
2.The GPS antenna has a free view through 360 degrees with a vertical angle of 5 to 90 degrees above the horizon.
3.As the received GPS signal is very sensitive to noise and interference generated by other onboard transmitters,ensure that the GNSS antenna is placed as far away as possible from radar,Inmarsat and Iridium transmitters and ensure the GPS antenna is free from direct view of the radar and the Inmarsat beam.
4.It is also important that the MF/HF and other VHF transmitter antennas are kept as far away as possible from the GNSS antenna.It is good practice never to install a GNSS antenna within a radius of 5 meters from these antennas.
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