초록 ▼

A control target surveillance system capable of acquiring positional data of a control target in a control zone at high precision with fewer communications lines in a short period of time. A D. GPS ground station obtains differential data with respect to positional data based on a GPS signal from a

A control target surveillance system capable of acquiring positional data of a control target in a control zone at high precision with fewer communications lines in a short period of time. A D. GPS ground station obtains differential data with respect to positional data based on a GPS signal from a GPS satellite, and sends this data to a control target to compensate the positional data obtained from the GPS signal. A surveillance cycle is time-divided by the number of SSR codes, individual time slots are associated with the SSR codes, and each control target is allowed.

대표청구항 ▼

A control target surveillance system for allowing a control equipment to monitor positions of a plurality of control targets in a control zone, said system comprising: time adjusting means for making times, managed by said plurality of control targets and said control equipment, coincide with one an

A control target surveillance system for allowing a control equipment to monitor positions of a plurality of control targets in a control zone, said system comprising: time adjusting means for making times, managed by said plurality of control targets and said control equipment, coincide with one another; positional data obtaining means, installed on each of said control targets, for obtaining at least local positional data using a satellite navigation system; positional data transmitting means, installed on each of said control targets and being managed with times adjusted by said time adjusting means, for transmitting said positional data, obtained by said positional data obtaining means, to said control equipment via a specific communications line within a period of a time slot corresponding to an identification code previously affixed; positional data receiving means, provided at said control equipment, for receiving positional data sent from each control target via said communications line; control target discriminating means, provided at said control equipment and being managed with times adjusted by said time adjusting means, for, with regard to each positional data received at said positional data receiving means, obtaining a corresponding identification code from a time slot of a reception time of said positional data to thereby discriminate the control target which has sent said positional data; and display means, provided at said control equipment, for displaying positions based on said received data and a result of said control target discrimination every given surveillance cycle, whereby said surveillance cycle is time-divided by at least a plurality of previously prepared identification codes to determine time slots corresponding to said identification codes, and said identification codes are previously given to said plurality of control targets in such a way as not to overlap one another to thereby assign said time slots to said control targets.