A display system of an aircraft, intended to be installed in an aircraft, the system being intended to facilitate the piloting of the aircraft during landing under conditions with little or no visibility and to assist the pilot in the visual identification of an approach light ramp toward a landing strip having an approach light ramp extending in front of the landing strip, in the axis thereof, in order to decide whether to continue the landing on the landing strip, the system comprising: - a display unit; - an assembly for generating a display on the display unit connected to the display unit and to a system of measuring sensors for measuring airplane and spatial positioning parameters of the aircraft, the display unit allowing the pilot to observe the area situated in front of the aircraft, and simultaneously, a display generated by the display-generating assembly; wherein the display-generating assembly is able to display, on approach to a landing strip, a localization marking of a presence zone of a approach light ramp toward the landing strip, into which the approach light ramp concealed by a cloud cover is intended to appear, once the cloud cover has been pierced, wherein the localization marking includes at least two opposite lateral localization symbols (90A; 90D) of the presence zone of the approach light ramp, delimiting the presence zone of the approach light ramp to the left and right, the two opposite symbols (90A, 90D) being situated in a position corresponding to a predetermined distance on the ground from the runway threshold at which the approach light ramp comprises a transverse row of lights, characterized in that the lateral separation between the opposite symbols (90A, 90B) corresponds to a distance on the ground strictly greater than the width of the transverse row. - a display unit; - an assembly for generating a display on the display unit connected to the display unit and to a system of measuring sensors for measuring airplane and spatial positioning parameters of the aircraft, the display unit allowing the pilot to observe the area situated in front of the aircraft, and simultaneously, a display generated by the display-generating assembly; wherein the display-generating assembly is able to display, on approach to a landing strip, a localization marking of a presence zone of a approach light ramp toward the landing strip, into which the approach light ramp concealed by a cloud cover is intended to appear, once the cloud cover has been pierced, wherein the localization marking includes at least two opposite lateral localization symbols (90A; 90D) of the presence zone of the approach light ramp, delimiting the presence zone of the approach light ramp to the left and right, the two opposite symbols (90A, 90D) being situated in a position corresponding to a predetermined distance on the ground from the runway threshold at which the approach light ramp comprises a transverse row of lights, characterized in that the lateral separation between the opposite symbols (90A, 90B) corresponds to a distance on the ground strictly greater than the width of the transverse row. the display unit allowing the pilot to observe the area situated in front of the aircraft, and simultaneously, a display generated by the display-generating assembly; wherein the display-generating assembly is able to display, on approach to a landing strip, a localization marking of a presence zone of a approach light ramp toward the landing strip, into which the approach light ramp concealed by a cloud cover is intended to appear, once the cloud cover has been pierced, wherein the localization marking includes at least two opposite lateral localization symbols (90A; 90D) of the presence zone of the approach light ramp, delimiting the presence zone of the approach light ramp to the left and right, the two opposite symbols (90A, 90D) being situated in a position corresponding to a predetermined distance on the ground from the runway threshold at which the approach light ramp comprises a transverse row of lights, characterized in that the lateral separation between the opposite symbols (90A, 90B) corresponds to a distance on the ground strictly greater than the width of the transverse row.