| 摘要 |
A radio navigation-landing system with active interrogation comprises ground and airborne parts, the ground part includes three range-measuring radio-beacons that are placed in the plane of runway. The airborne part includes connected in series antenna, antenna switch, transmitter, modulator and coder, receiver, first input of which is connected to the second output of the antenna switch, heterodyne, the first and the second outputs of which are connected to the second inputs of the receiver and transmitter, respectively, the first and the second transformation blocks, indicator of deviation, first range indicator and calculator, the first, second and third outputs of that are connected to respective inputs of the first range indicator, first and second transformation blocks outputs of which are connected to the first and second inputs of deviation indicator, respectively, and range meter. Range-meter beacons are placed in the top of a triangle that belongs to the plane of runway with distances between the bases of radio-beacons from 20to 200, where- root-mean-square error of measurement of slant range with navigation-landing system. Center of weight of the triangle is located in any point of a circle with radius not larger than 200with center in reference point of the runway. To the airborne section analog calculator, input-output device, control device and second range indicator are included. |
