[jīng wěi yí]
- A mounting for astronomical telescopes that permits both horizontal and vertical rotation.
- Electronic theodolite or total station instrument should be adopted for field survey of control cross-section.
- Geodetic theodolites generally have circles of about140mm diameter.
- How to demarcate lift centre line of track conveyance and cross centre line of the hoist installation by using theodolite are introduced which has great importance in the security and efficience of the transportation in the oblique lane.
- Internal formwork is checked by adopting transit instrument to set out central line in the top of bottom formwork to control the axial line of internal formwork and to measure dimensions of axial line of internal formwork and side formwork.
- In this paper the transit instrument and the mono-lever manipulator's architecture features of the transit instrument training simulation system are analysed.
- Bottom formwork is checked by adopting transit instrument to control axial line and measure transverse dimensions and using balance level to check the elevation of multiple cross sections.
- A telescope having such a mounting.
- By using a reflector and two pentaprisms one beam of light is separated into two parallel beams then respectively they are received by two optical systems of the large scale photoelectric theodolite with certain imaging d-value which correspondingly represents each optic axis parallel error of these two optical systems.
- The simulating results show that kalman prediction method can be applied to theodolite's tracking mobile target simulatioion satisfactorily.
- Simulant track training in offline is suitable for primary operator on the low level and it can protect transit instrument from attaintting prolong the life-span of the transit instrument;
- Kalman prediction method was applied to theodolite's tracking mobile target and simulation research of tracking mobile target was conducted under different target beacon velocity.
- A theodolite designed for rapid measurements.
- An adjustable three-legged stand as for supporting a transit or camera.
- For the purpose of communication between host-controlling computer of theodolite and center-computer under windows nt this paper designs synchronous communication adapter with two channels based on intel8274and hdlc protocol.the paper also develops the driver for the board using nt ddk and completes the high-speed sending and receiving of data.now the adapter has been applied to the new generation optical-electronic theodolite.