Method for converting a gnss receiving system having no interference protection into a crpa receiving system and crpa system

An operating method, which comprises the steps of:

• suppressing interference of a global navigation satellite system (GNSS) signal by using a controlled radiation pattern antenna (CRPA) interference suppression unit;
• conducting bidirectional communication between the CRPA interference suppression unit and a controller using a coaxial cable;
• receiving the GNSS signal using a CRPA antenna and the interference being suppressed using the CRPA interference suppression unit;
• and
• routing an interference-suppressed signal to a GNSS receiver by means of the coaxial cable.

A controlled radiation pattern antenna (CRPA) system, comprising:

• a receiving system having a CRPA antenna for receiving a global navigation satellite system (GNSS) signal;
• a CRPA interference suppression unit for suppressing interference of the GNSS signal;
• a GNSS receiver;
• a coaxial cable connected between said CRPA interference suppression unit and said GNSS receiver;
• and
• a controller connected to said CRPA interference suppression unit by means of said coaxial cable and is prepared for a bidirectional communication with said CRPA interference suppression unit by means of said coaxial cable.