METHOD OF NAVIGATING AN OBJECT USING A RADIO RANGEFINDER SYSTEM Russian patent published in 2022 - IPC G01C23/00 

FIELD: navigation systems.

SUBSTANCE: invention relates to navigation and is intended to determine coordinates, speed and orientation of objects and can be used in navigation of ground and water objects, aircraft (AC). Complex method of object navigation, including ground, water, flying, both manned and unmanned, provides for the object location using inertial navigation method, using data on accelerations and angular velocities of object in axes of coordinate system associated with object, and simultaneously with said method use of radio range-finding method of navigation based on determining distances from interrogator to at least 2 reference navigation devices (RND), which includes the emitting of the interrogating range-finding signals by the interrogator along the range-finding channel, the reception of the said signals at the RND, the base coordinates of which are known, the generation and emission of the response range-finding signals along the range-finding channel, receiving, at the interrogator of the object, said response signals, measuring at the interrogator the delay time of the response ranging signals relative to the interrogating ranging signals and determining the navigation parameters using the radio ranging method, and further providing in the on-board computer for complex processing of navigation parameters. At the same time, an additional sequence of pulses is introduced into the request and response signals, which enables to quickly adjust the amplification of the receiving device to stabilize the amplitude of the measurement pulses, which enables to achieve accurate referencing to the leading fronts of the latter, which is used to synchronize the moment of radiation of the RND response signal or to measure the arrival delay of the response ranging signals in the interrogator, wherein provision is made for operation of interrogator and all RND on one radio frequency and use of one common interrogation signal for all RND, as well as allocation of its own time interval (time slot) to each RND relative to the request signal so that after reception of the interrogation signal in each ONU there provided is a known fixed radiation delay of the response signal, which is sufficient for the latter to enter the time slot allocated for it.

EFFECT: high reliability and accuracy of the integrated method of navigation during independent use of the radio range-finding system with simultaneous reduction of the number of radio frequencies occupied by it.

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