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1

Laser plummet testing with the use of the optoelectronic elements

Ćmielewski K., Kuchmister J., Gołuch P., Patrzałek Z., Kowalski K.

Reports on Geodesy

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2011

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z. 1/90

93-100

EN

Geodetic works realized with the use of angle-measuring instruments and rangefinders are associated with the procedure of a correct setting up of the measurement instrumentation on the control points and the points moved to different building levels in investment processes. The accuracy of the setting up of the measurement instrument over the point depends on i.a. the precision of the rectification of the until recently mounted optical plummet and the recently more and more frequently applied laser plummet. This is connected with the number of advantages, that have been introduced to the land surveying by the laser technique. The development of optoelectronic technique, that in many problems takes the role of an "observator", gives a broad spectrum to create the measurement apparatus. Nowadays especially the use of the CCD converters is commonly possible, owing to the undoubtedly low costs of their purchase. In this paper there have been presented the results of the experimental testing works with the use of the optoelectronic elements of the three laser plummets, that account for the equipment of the Leica and Trimble total stations.

2

Surveyor+ GPS

Królikowski J.

Geodeta : magazyn geoinformacyjny

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2011

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nr 1

62-63

3

Dwadzieścia lat na rynku

Wardziak A.

Geodeta : magazyn geoinformacyjny

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2010

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nr 3

40-42

4

Testing measurements of the prototype of laser-prismatic clinometer for obserwation pillars inclination

Jamroz O., Ćmielewski K., Kowalski K.

Reports on Geodesy

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2006

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z. 2/77

115-122

EN

Construction of the prototype of laser-prismatic clinometer is presented in the paper. Laser beam is deflected in several liquid prisms of a variable breaking angle and registered using CCD converter with focusing screen. Focusing screen is equiped in four fiber optic conductors as reference points. Measurement range and observations accuracy of the clinometer are established. This new instrument makes possible to determine self movements and linear inclination of the observation pillars with high accuracy (approx 0.02 mm/m). Authors present results of the first testing measurements and computations.

5

The comparator for leveling rods on the base of optical encoder system

Vodopivec F., Kogoj D.

Reports on Geodesy

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2002

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z. 1/61

115-123

EN

For an accurate determination of vertical shifts in geodynamics the precise compared levelling rods are indispensable. The modern standards of lenght and digital technology make it possible both the traditional line graduation and the coded graduation of levelling rods including automatic evaluation of the measuring values. We have renewed the old Zeiss Longtudinal Comparator. The precision and speed of comparison of all types of the levelling rods with a modernised comparator is comparable to laser interferometer comparators.

6

New tidal gravimetric laboratory in Jozefoslaw

Bogusz J.

Reports on Geodesy

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2002

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z. 1/61

153-159

EN

Since the middle of 2001 the Astro-Geodetic Obserwatory in Jozefoslaw has been equipped with new ET-26 LaCosteand Romberg gravimeter. This instrument is strictly dedicated to the Earth tides measurements. It has double lever system, double oven heating system and electrostating nulling which provide greater reliability and accuracy. This paper is aimed at describing the actions that had to be done before the recording started in the tidal laboratory in new building of the Jozefoslaw Observatory. These activities for instance were: electronic levels adjustment, instrumental phase lag determination as well as correctness of the voltmeter constant evaluation checking. The presentation contains the preliminary results of measurements at the tidal parameters (amplitude factors and phase shifts) derived from adjustment of first 5-months data. The concept of the synchronized tidal measurements made by two LC&R gravimeters (ET-26 and D-196) working in almost identical conditions in the same laboratory in Jozefoslaw is also presented.