Aircraft collision avoidance method and device

A receiver device comprising:

• a radio receiver configured to receive a foreign data packet as broadcasted from a foreign broadcast device, in particular of any of the preceding claims, the foreign data packet being indicative of information pertaining to a second aircraft,
• wherein the foreign data packet comprises foreign truncated position data indicative of a position P2 of the second aircraft, in particular foreign truncated latitude data and foreign truncated longitude data, wherein a bit width of the foreign truncated position data is smaller than a bit width of foreign position data being indicative of a position of the foreign broadcast device,
• wherein the foreign data packet comprises a pair c2=(e2, m2) with an exponent e2 being a natural number and with a mantissa m2 being a natural number,
• wherein the pair c2 is indicative of a value v2,
• wherein the mantissa m2 has a bit width of Nm2 and wherein the exponent e2 has a bit width of Ne2,
• wherein
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• and wherein the bit widths Nm2 and Ne2 are selected such that a total bit width N2=Ne2+Nm2 of the pair c2 is smaller than a total bit width of the value v2,
• wherein the receiver device further comprises
• a control unit configured to:
• receive position data indicative of a position of the receiver device,
• receive the foreign data packet as received by the radio receiver,
• disambiguate the foreign truncated position data, in particular the foreign truncated latitude data and the foreign truncated longitude data using the position data, and
• compute the value v2 using the pair c2.