Method for measuring the distance between two points in space and telementry system for implementing such a method

A method for measuring the distance between a first point (C1) in space and a second point (C2) in space, comprising the following steps:

• a) providing a spatial reference device (20) comprising a first reference point (O) and at least two referential radio transceivers (21, 22, 23, 24), that is, a first referential radio transceiver (21) and a second referential radio transceiver (22), a telemetry means (30) provided with a second reference point (T), at least one positioning radio transceiver (32) and at least one telemeter (34);
• b) positioning the spatial reference device (20) in space;
• c) determining the relative position between the first reference point (O) and the first point (C1)
• i. by positioning the telemetry means (30) in space,
• ii. by determining the distance between the second reference point (T) of the telemetry means (30) and the first point (C1) using the telemeter (34),
• iii. by determining the relative position between the first reference point (O) of the spatial reference device (20) and the second reference point (T) of the telemetry means (30) from at least one radio signal transmitted between the referential radio transceivers (21, 22, 23, 24) and the positioning radio transceiver (32),
• iv. by determining the orientation of the telemetry means (30) in space,
• v. by calculating the relative position between the second reference point (T) and the first point (C1) from the distance between the second reference point (T) and the first point (C1), the relative position between the spatial reference device (20) and the second reference point (T) and the orientation of the telemetry means (30) in space,
• d) determining the relative position between the first reference point (O) and the second point (C2)
• i. by positioning the telemetry means (30) in space,
• ii. by determining the distance between the second reference point (T) of the telemetry means (30) and the second point (C2) using the telemeter (34),
• iii. by determining the relative position between the first reference point (O) of the spatial reference device (20) and the second reference point (T) of the telemetry means (30) from at least one radio signal transmitted between the referential radio transceivers (21, 22, 23, 24) and the positioning radio transceiver (32),
• iv. by determining the orientation of the telemetry means (30) in space,
• v. by calculating the relative position between the second reference point (T) and the second point (C2) from the distance between the second reference point (T) and the second point (C2), the relative position between the spatial reference device (20) and the second reference point (T) and the orientation of the telemetry means (30) in space,
• e) calculating the distance between the first point (C1) and the second point (C2) from the relative position between the reference point and the first point (C1) and the relative position between the reference point and the second point (C2).