The airport monitoring system (1) for monitoring an airport territory (5), comprises an airport territory surface and an optic sensor system (70, 72a,…,72e, 100). The airport territory surface has a traffic infrastructure to support conveyance elements of a vehicle (90), e.g. an aircraft or a service vehicle, therewith allowing movements of the vehicle over the airport territory surface. The optic sensor system (70, 72a,…,72e, 100), includes an interrogator module (100) and fiber optic sensors (72a,…,72e) coupled thereto. The fiber optic sensors are arranged below the airport territory surface and have a respective plurality of optic strain-sensor elements (722) with mutually different optical characteristics. The interrogator module (100) transmits optical interrogation signals into the fiber optic sensors and receives respective response optical signals that have been modulated by the fiber optic sensors based on their optical characteristics. The interrogator module (100) identifies changes in the optical characteristics of the received respective response optical signals resulting from strains induced in the optic strain-sensor elements as a result of pressure exerted by a conveyance element (92) of a vehicle (90) on the airport territory surface (51) near a fiber optic sensor.
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