Method for reducing a risk of tampering and/or spoofing of location data of an object over time, and use of signals-in-space receiver and reader in such method

Method according to one of the preceding claims, wherein the object (4) is:

• a vessel, in particular the object (4) is a fishing ship, or
• a container, in particular on a vessel or on a road truck, or
• a vehicle, or
• a human body.

Method for retrieving location data (5) of an object (4) over time from a signals-in-space receiver (2) provided to the object (4), comprising the steps of:

• providing the signals-in-space receiver (2) comprising an antenna (8) for receiving a navigation signal , an A/D converter (15) for discretizing the navigation signal (10a, 10b, 10c, 10d) to navigation data, a memory unit (16) storing the navigation data and an interface (7) for connecting the reader (6) to the memory unit (16);
• transferring the navigation data over time from the memory unit (16) to the reader (6);
• and
• retrieving the location data (5) of the object (4) over time,
• characterized by
• the memory unit (16) storing encrypted navigation data (12), the encrypted navigation data (12) being obtained by the A/D converter (15) discretizing an encrypted navigation signal (10a, 10b, 10c, 10d), the encrypted navigation signal (10a, 10b, 10c, 10d) being received by the signals-in-space receiver (2) through its antenna (8);
• connecting the reader (6) with the signals-in-space receiver (2);
• transferring the encrypted navigation data (12) over time from the memory unit (16) to the reader (6);
• and
• decrypting in the reader (6) the encrypted navigation data (12) over time and retrieving the location data (5) of the object (4) over time.

Method according to the previous claim, further comprising the steps of:

• providing the signals-in-space receiver (2) to the object (4);
• receiving the encrypted navigation signal (10a, 10b, 10c, 10d) over time by the antenna (8);
• discretizing the encrypted navigation signal (10a, 10b, 10c, 10d) over time by the A/D converter (15) into encrypted navigation data (12);
• storing the encrypted navigation data (12) over time in the memory unit (16).

Method for storing location data (5) of an object (4) over time in a signals-in-space receiver (2), comprising the steps of:

• providing the signals-in-space receiver (2) to the object (4), the receiver (2) comprising an antenna (8) for receiving a navigation signal, an A/D converter (15) for discretizing the navigation signal to navigation data, a memory unit (16) for storing the navigation data over time and an interface (7) for connecting a reader (6) to the memory unit (16);
• receiving the navigation signal over time by the signals-in-space receiver (2) through its antenna (8);
• discretizing the navigation signal over time by the A/D converter (15) into navigation data;
• storing the navigation data over time in the memory unit (16),
• characterized in that
• the signals-in-space receiver (2) receives an encrypted navigation signal (10a, 10b, 10c, 10d) over time;
• the A/D converter (15) discretizes the encrypted navigation signal (10a, 10b, 10c, 10d) over time into encrypted navigation data (12) over time;
• and
• the memory unit (16) stores the encrypted navigation data (12) over time, wherein the encrypted navigation data (12) over time is representative for the location data (5) of the object (4) over time.

Signals-in-space receiver (2), comprising:

• an antenna (8) for receiving a navigation signal over time;
• an A/D converter (15) for discretizing the navigation signal over time in navigation data over time;
• a memory unit (16) for storing the navigation data over time;
• and
• an interface (7) for connecting with a reader (6) and transferring the navigation data over time to the reader (6),
• characterized in that
• the antenna (8) is adapted to receive an encrypted navigation signal (10a, 10b, 10c, 10d) over time;
• the A/D converter (15) is adapted to discretize the encrypted navigation signal (10a, 10b, 10c, 10d) over time in encrypted navigation data (12) over time;
• the memory unit is adapted to store the encrypted navigation data (12) over time;
• and
• the interface (7) is adapted to transfer the encrypted navigation data (12) over time to the reader (6).

Reader (6) for retrieving location data (5) of an object (4) over time, comprising:

• an interface for connection with a signals-in-space receiver (2) and transferring navigation data over time stored in the receiver (2) from the receiver (2) to the reader (6);
• and
• a retrieving unit (23) for retrieving the location data (5) of the object (4) over time from the navigation data,
• characterized in that
• the interface is adapted to transfer encrypted navigation data (12) over time;
• the retrieving unit (23) is adapted to retrieve the location data (5) of the object (4) over time from decrypted navigation data (22),
• wherein the reader further comprises a decryption unit configured for decrypting the encrypted navigation data (12) over time into the decrypted navigation data (22).

System (1) for retrieving location data (5) of an object (4) over time, comprising:

• a signals-in-space receiver (2), comprising:
• an antenna (8) for receiving a navigation signal over time;
• an A/D converter (15) for discretizing the navigation signal over time in navigation data over time;
• a memory unit (16) for storing the navigation data over time;
• an interface (7) for connecting with a reader (6) and transferring the navigation data over time from the memory unit (16) to the reader (6), the system further comprising:
• the reader (6) for retrieving the location data (5) of the object (4) over time, comprising:
• a receiver interface (27) for connection with the signals-in-space receiver (2) and transferring the navigation data over time stored in the receiver (2) from the receiver (2) to the reader (6);
• a retrieving unit (23) for retrieving the location data (5) of the object (4) over time from the navigation data,
• characterized in that
• the signals-in-space receiver (2) is adapted to receive an encrypted navigation signal (10a, 10b, 10c, 10d) over time;
• the A/D converter (15) is adapted to discretize the encrypted navigation signal (10a, 10b, 10c, 10d) over time into encrypted navigation data (12) over time;
• the memory unit (16) is adapted to store the encrypted navigation data (12) over time;
• the interface (7) is adapted to transfer the encrypted navigation data (12) over time from the memory unit (16) to the reader (6);
• the receiver interface (27) is adapted to transfer the encrypted navigation data (12) over time from the receiver (2) to the reader (6);
• and
• the retrieving unit (23) is adapted to retrieve the location data (5) of the object (4) over time from decrypted navigation data (22),
• the reader (6) further comprises a decryption unit configured for decrypting the encrypted navigation data (12) over time into the decrypted navigation data (22).