2 results about "Gyrotheodolite" patented technology

The invention discloses a measuring device and a measuring method for measuring true north azimuth angle based on a theodolite, the measuring device comprises a fixing frame, one side of the top of the fixing frame is fixedly connected with a fixing block, the fixing block is internally provided with a driving assembly, the top end of the driving assembly is fixedly connected with a placing table, the top of the placing table is clamped with a theodolite device, and the theodolite device is fixedly connected with the fixing block. A fixed bevel protractor is arranged at the bottom of the placing table, a movable bevel protractor is arranged at the top of the fixing block, and a balance rod is fixedly connected to the other side of the top of the fixing frame. By arranging the adjusting assembly and the limiting piece, before the equipment is used, the true north direction can be marked through a rented gyro theodolite, the vertical edge of the vertical line of the fixed bevel protractor is connected with the arc-shaped rod through the extension plate by utilizing the limiting piece, an absolute point O is marked, and then the position of the fixed bevel protractor is adjusted through the adjusting assembly; therefore, the fixed bevel protractor is fixed in the true north direction.

The application discloses a true azimuth angle reference calibration device and method for a radar without an optical axis, and belongs to the field of radar development and production.The device comprises an electronic theodolite, a radiating horn antenna, a horn support, a microwave signal source, a radar servo system, a radar antenna testing device and a gyro theodolite.The electronic theodolite is arranged on an antenna testing tower, the radiating horn antenna is arranged on the electronic theodolite through the horn support, the radiating horn antenna is electrically connected with the microwave signal source, the radar servo system and the radar antenna testing device are used for aligning the electric axis azimuth of a radar antenna to be calibrated with the radiating horn antenna, the gyro theodolite and the radar to be calibrated are arranged at the far end of the electronic theodolite, the gyro theodolite is used for transmitting the true north reference to the electronic theodolite, the center mark point of the radar antenna to be calibrated is aimed at through the electronic theodolite, and then the true azimuth angle of the electric axis of the radar antenna to be calibrated can be obtained by taking the supplement of the azimuth angle of the radar to be calibrated and the horizontal angle reading of the electronic theodolite according to a circle.