RU2058562C1 - Method of remote determination of object coordinates - Google Patents

Abstract

FIELD: radio engineering. SUBSTANCE: signals are radiated by active object after which they are received at first and second beacons, phase is stored; signals are delayed and reradiated at time separation by first and second beacons; signals reradiated by first and second beacons are received at active object; each of K objects receives signals radiated by active object and reradiated by first and second beacons; phase of received signals is stored; signals are delayed and reradiated at time separation; signals reradiated by each of K objects are received at active object; ranges between each of K objects and active object and first and second beacons are determined at active object. EFFECT: enhanced accuracy. 2 dwg

Description

 The invention relates to radio engineering and can be used in radio-geodetic and radio navigation systems.

 There is a method of determining the coordinates of an object, which consists in emitting signals by the main active object (the leading station in the prototype), receiving the emitted signals at the first and second beacons (first and second slave stations in the prototype), remembering the phase, delaying and re-emitting the signals with time division by the first and second beacons, receiving signals of the main active object re-emitted by the first and second beacons on the main active object, determining distances from the main active object to the first and second beacons of the time delay between the main signal and the active object signals reemitted first and second beacons.

 This method allows you to determine with high accuracy the location of active objects.

 Its disadvantage is the inability to remotely determine the coordinates of moving objects.

 The purpose of the invention is the expansion of functionality. This is achieved by remotely determining the location of other active objects on the main active object.

 To do this, with the method of remotely determining the coordinates of objects, which consists in emitting signals from the main active object, receiving emitted signals at the first and second beacons, memorizing the phase, delaying and re-emitting signals with time separation by the first and second beacons, receiving signals from the main active object objects reradiated by the first and second beacons, determining the distances from the main active object to the first and second beacons by the delay time between the signal of the main active object and signals re-emitted by the first and second beacons, in addition to each of the K active objects receive signals emitted by both the main active object and the signals of the main active object re-emitted by the first and second beacons, memorize the phases of the received signals, delay them and re-emit them separated by time, receive signals re-emitted by each of K active objects on the main active object, and determine the distance from each of K active objects on the main active object as to the main active object and to first and second beacon by a delay time between the signal ground and the active object signals reemitted by each of K active objects.

 In FIG. 1 is a structural diagram of a remote sensing system K of active objects; figure 2 timing diagrams explaining its operation.

The system contains the first lighthouse 1, the second lighthouse 2, the main active object 3, K active objects 4 ₁ -4 _k , the coordinates of which are determined remotely on the main active object 3.

 A method for remotely determining the coordinates of each of K active objects is as follows.

On the main active object 3, a signal is emitted in the time interval t ₁ -t ₂ (see Fig. 2, a). During this interval, the phase of the received signal is stored on the first 1 and second 2 beacons and on K active objects 4 ₁ -4 _k (see figure 2, b-2, e). In the time interval t ₃ -t _{4 the} signal of the first beacon 1 is emitted (see Fig. 2, e), a signal is received at the main active object 3 (see Fig. 2, a) and according to the delay time of the signal that has passed the path from the main active object 3 to the first lighthouse 1 and vice versa, determine the range (r ₁₃ ). During this interval, the phase of the received signal is stored on K active objects 4 ₁ -4 _k (see Fig. 2, b, d). In the time interval t ₅ -t _{6, the} signal of the second beacon 2 is emitted (see Fig. 2, f), a signal is received at the main active object 3 (see Fig. 2, a) and according to the delay time of the signal that has passed the path from the main active object 3 to the second lighthouse 2 and vice versa, determine the range (r ₂₃ ). During this interval, the phase of the received signal is stored on K active objects 4 ₁ -4 _k (see Fig. 2, b, d).

In the time intervals t ₇ -t ₈ , t ₉ -t ₁₀ and t ₁₁ -t _{12 the} signals of the active object 4 _{1 are} re-emitted (see Fig. 2, b), signals are received on the main active object 3 (see Fig. 2, a) and the delay time of the signal that has passed the path from the main active object 3 to the active object 4 ₁ and vice versa, determine the range (r ₃₄₁ ), the delay time of the signal that has passed the path from the main active object 3 to the first beacon 1 and back through the active object 4 ₁ determined distance (r ₁₁ r ₁₃ + r ₁₄₁ + r ₃₄₁₎ of the delay time of the signal transmitted from the main path of the active object 3 d 2 the second beacon and back through the active object 4 is ₁ determined distance (r ₂₁ r ₂₃ + r ₂₄₁ + r _341).

In the time intervals t ₁₃ -t ₁₄ , t ₁₅ -t ₁₆ and t ₁₇ -t _{18 the} signals of the active object 4 _{2 are} re-emitted (see figure ₂ , c), signals are received on the main active object 3 (see figure 2, a) and similarly to the described range are determined (r ₃₄₂ , r ₁₂ r ₁₃ + r ₁₄₂ + r ₃₄₂ , r ₂₂ r ₂₃ + r ₂₄₂ + r ₃₄₂ ).

In the time intervals t ₁₉ t ₂₀ , t ₂₁ t ₂₂ and t ₂₃ t _{24, the} signals of the active object 4 _{k are} re-emitted (see Fig. 2, g), and signals are received on the main active object 3 (see Fig. 2, a) and similarly to that described, the ranges are determined (r _34k , r _1k r ₁₃ + r _14k + r _34k , r _2k r ₂₃ + r _24k + r _34k ).

Based on the obtained ranges at the main active object 3, the coordinates of each of the K active objects 4 ₁ -4 _{k are} determined remotely with the known coordinates of the beacons.

In the practical implementation of the proposed method, the magnitude of the working area of the system is determined by the relative position of the beacons 1, 2, active objects 3, 4 ₁ -4 _k and depends on the range (r ₁₄ , r ₂₄ , r ₃₄₁ , r ₃₄₂ .r _34k ).

 The proposed method can be used, for example, to remotely determine the location of terminal buoys towed by a vessel, during geophysical exploration for oil and gas in the coastal waters of the continental shelf.

Claims (1)

 METHOD FOR REMOTE DETERMINATION OF OBJECT COORDINATES, which consists in emitting signals by the main active object, receiving emitted signals on the first and second beacons, memorizing the phase, delaying and re-emitting signals with time separation by the first and second beacons, receiving signals of the main active on the main active object objects reradiated by the first and second beacons, determine the distance from the main active object to the first and second beacons according to the delay time between the signal of the main active object this and the signals re-emitted by the first and second beacons, characterized in that on each of the K active objects (K 1 M) receive signals emitted by both the main active object and the signals of the main active object re-emitted by the first and second beacons, remember the phases of the received signals , they are delayed and re-emitted with time division, receive signals re-emitted by each of K active objects on the main active object, and determine the distance from each of K active objects on the main active object as before the main active object, and before the first and second beacons in terms of the delay time between the signal of the main active object and the signals re-emitted by each of the K active objects.

Images