Patent ID: 11921231
Assignee: SAFRAN ELECTRONICS & DEFENSE
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A method of monitoring a region in which a carrier is located, the method comprising the steps of:
using at least one sensor of a first type to detect successive positions of a moving body following a path in said region; and
displaying a polar plot having a center symbolizing the current position of the carrier and having placing thereon a first moving-body symbol representing the current position of the moving body as a function of the bearing angle and of the distance of the moving body relative to the carrier;
the method being characterized in that it further comprises the steps of:
displaying an annular band around the polar plot, the band being of width that represents a predetermined monitoring duration; and
placing second moving-body symbols in the annular band, the second symbols being representative of successive readings of angles along the path of said moving body, the annular band having an inner outline corresponding to a recent time and an outer outline corresponding to a past time preceding the recent time by a duration equal to the predetermined monitoring duration, and the second moving-body symbols being placed closer to the outer outline of the annular band with increasing age of the corresponding angle readings.