Cabinet of Ministers Regulations No. 879 in 2011 (15 November. 67. § 7) geodetic reference systems and topographic map system rules Issued in accordance with the law of information 11 Geo. the third paragraph of article 12 and the fourth part of article i. General questions 1. determines: 1.1. geodetic reference system, use and maintenance;
1.2. the 1992 geodetic coordinate system (hereinafter referred to as LK-92) parameters and application procedures;
1.3. The Baltic 1977 normal height system (hereinafter referred to as BAS-77);
1.4. the 1993 topographical map system (hereinafter referred to as TK-93) parameters and application procedures.
2. LK-92 and BASS-77 form a geodetic reference system. The geodetic reference system model marketing area provides a national geodetic network, including the permanent global positioning system base station "positioning system" (hereinafter referred to as LatPo).
3. Geodetic Network be divided into network ways according to GEODESIC's characteristics and classes according to GEODESIC accuracy characteristics.
4. Local geodetic network forms the basis of the national geodetic network.
II. LK-92 characteristics and the arrangements for 5. LK-92 is based on the World Geodetic System 1984 (World Geodetic System 1984) with international geodetic reference system 1980 Earth rotation elipsoīd (Geodetic Reference System 1980) (GRS80), adopted by the International Association of Geodesy and cartography of the XVII General Assembly (General Assembly XVII of the International Union of Geodesy and Geophysic) with the following parameters : 5.1 the semi-major axis a = 6 378 137 m; 5.2 Earth geocentric gravitational constant (including atmosphere) GM = 3 986 005 x-2 is 108m3;
5.3. land dynamic form factor (not taking into account the permanent deformation of the tide) J2 = 108 263 x 10-8;
5.4. The Earth's rotational angular speed ω = 7 292 115 x 10-11 rad s-1;
5.5. the ellipsoidal saplakum f = 1/298.257222101.6. LK-92 attracted European ground reference system (the European Terrestrial reference system 1989) (hereinafter referred to as the ETRS89) provides global positioning network 0. class points Riga, Kangar, Indra and the ploughman, who coordinates a specific coordinate system ETRS89 with the realization of the epoch of 1992.75.7. EUREF89 LK-92 distributes global positioning network 0, 1 and 2 class periods, and LatPo.
8. LK-92 coordinates determined: in 3-d Cartesian coordinates 8.1, designated LK-92 XYZ where: 8.1.1. abscissa is located on the equator in the middle of the plane and the Greenwich Meridian plane, denoted by X; 8.1.2. ordinate is the Equator plane 90 ° East of Greenwich Meridian plane, denoted by Y;
8.1.3. aplikāt axis pointing in the direction of the North Pole, denoted by Z;
8.1.4. the abscissa, ordinate, and aplikāt is expressed in metres;
8.2. geodetic coordinates elipsoīd in the rotation, the LK-92 BLh that: 8.2.1.  North latitude is designated by (B);
8.2.2. Eastern length denoted by L; 8.2.3. geodetic height (ellipsoidal) denoted by h;
8.2.4. North latitude and East longitude is measured in degrees (°), minutes ('), and seconds ("");
8.2.5. the height is expressed in metres;
8.3. the transversal Mercator projection plane coordinates, identifying the LK-92 TM that: 8.3.1. coordinate plane using a Mercator projection of the transversal law;
8.3.2. abscissa facing north, denoted by x; 8.3.3. ordinate focused eastward, denoted by y;
8.3.4. the abscissa and ordinate is expressed in metres.
9. LK-92 of the transversal Mercator projection system for plane parameter are set as follows: 9.1. plane with one axis Meridian 24o. g. (e);
9.2. scale factor of plane 0.9996 on the axis Meridian;
9.3. the abscissa facing north, and the abscissa value reduced by 6 000 000 m; 5.8. ordinate axis facing East and the ordinate value increased by 500 000 m. 10. Projection scale factor for the calculation of the LK-92 TM uses the following formula: m = 0.9996 + 0.9996 × y02, where R 2 R 2 − elipsoīd of rotation of the radius of curvature of the surface (the Latvian territory R = 6386.8 km);
y0u-medium with the ordinate (= y0u ykm-ykm-500 kilometers, which expressed the position of the ordinate).
III. application procedure for BAS-77 11. height of the territory of the Republic of Latvia determines the normal height system.
12. The geodetic reference system model implements nivelēšan network class 1 and 2 points.
13. Point determined in normal heights in metres and is denoted by h. 14. Normal height calculations used in normal gravity field value to Rotary elipsoīd the GRS80.
15. The territory of the Republic of Latvia gravimetrisko measurements is reduced to the international gravity standardization NET 1971 (the International Gravity Standardization Net 1971) (hereinafter referred to as IGSN71).
16. in the Republic of Latvia implements IGSN71 gravimetric network class 1 and 2 points.
17. in determining the height of the BASS-77 with global positioning, use kvaziģeoīd height model EN ' 98, with accuracy against a national geodetic network global positioning network 2. class and nivelēšan class 1, the net is up to eight centimeters, or other kvaziģeoīd height model where accuracy is higher than LV kvaziģeoīd ' 98 model.
18. If, as a result of the geodetic work obtaining geospatial base data for State and local government functions and tasks, using another model of the height of the kvaziģeoīd, it validates the accuracy of State Agency "Latvian geospatial information agency" (hereinafter referred to as the Agency). Kvaziģeoīd height model validation by control and kamerāl, determines the accuracy of the model. The height of the Kvaziģeoīd model are validated against the national geodetic network.
19. Kvaziģeoīd model validation of the height of the Agency shall be carried out in accordance with a written request specifying the geodetic data used in the calculation and assessment of the accuracy of the model.
20. the Agency for the conduct of validation for a limited time receive access to this provision in point 19 above the height of the kvaziģeoīd model.
21. paragraph 18 of these rules in the validation of the results and accuracy estimation of the model shall be published in the Agency's home page on the internet.
22. The Agency provides a kvaziģeoīd model of Latvia LV ' 98 data availability and the updating of the public.
IV. Tks-93 characteristics and the arrangements for TKS-93 23 map sheets form the LK-92 TM Cartesian grid.
TKS-93 24 cards consists of the page, under the following conditions: 24.1. card page Division comprises the area that left bottom corner the abscissa (x) is 100 kilometers and the ordinate (y) − 300 kilometers and good upper abscissa (x) is 500 kilometers and the ordinate (y) − 800 kilometers (annex 2);
24.2. Tks-93 basis map page scale 1:200 000 to 100 x 100 km along the edges and the designation of the nomenclature, which consists of two digits-row and column label; 
15.1. all other scale card breakdown pages created, further dividing the map page in the scale of 1:200, 000, according to these rules 1, 2, and 3. the schemes displayed in the annex;
15.2. Tcs-93 standard scale line is scale 1:200 000, 1:100 000, 1:50 000, 1:25 000, 1:10, 000, 1:5000, 1:2000, 1:1000 and 1:500;
15.2. If the scale is greater than 1:500, card page breakdown, noting that rule 1, 2, and 3. the principles laid down in the annex.
V. national geodetic network 25. National geodetic network breakdown forms and classes according to its characteristics and accuracy are the following: 25.1. global positioning network 0. class (G0) with a standard deviation of 0 mm adopted; 25.2. global positioning network class 1 (G1) with a standard deviation of 20 mm to G0 class network;
25.3. global positioning network class 2 (G2) with a standard deviation of 25 mm to G1 class network;
25.4. nivelēšan network class 1 (N1) with a standard deviation of 1.0 mm/km;
25.5. nivelēšan network class 2 (N2) with a standard deviation of 2.0 mm/km;
15.9. gravimetric network class 1 (Gr1) with a standard deviation of 10 µ Tip;
25.7. gravimetric network class 2 (Gr2) with a standard deviation of 25 µ Tip against the Gr1 class network;
25.8. ģeomagnētisk network class 1 (Mg1) with declination of 0.5-1 ', ' inklinācij-0.5-1 and total field intensity 0.5 to 1W;
25.9. LatPo base station with a standard deviation of 20 mm coordinates to G0 class network.
26. Ģeomagnētisk network class 1 points ensure the territory of the Republic of Latvia in association with global ģeomagnētisk model.
27. the Agency shall provide the State geodetic network, including the national geodetic network installation points, according to the rules set out in paragraph 25 of the national geodetic network breakdown and precision requirements.
28. the national geodetic network points area by GEODESIC mark that has underground (except wall and global positioning the base station) and the surface. The bottom part of the Earth is a GEODESIC mark with the Center. Part of the surface can be a wall sign with the Center, the GEODESIC kupic, norādītājstab, signal, fencing.
29. the Agency provides geodetic marks album publicly available national geodetic network information system.
30. The Agency shall issue the internal regulations of the national geodetic network point of design, installation and determine the agenda.
Vi. LatPo system and use

31. the Agency's area of operation LatPo provided with permanently installed global positioning of base stations throughout the territory of the Republic of Latvia.
32. LatPo generates and transmits real-time data corrections and accumulates data post-processing geodetic measurements with global positioning instruments in the territory of the Republic of Latvia.
33. LatPo real time data correction for public entities and private individuals for a fee upon request, concluding with the agency contract on the LatPo real time global positioning system data correction.
34. the Agency provides an aftertreatment with LatPo data recording intervals of one second of two months in storage and data recording intervals of 30 seconds constant storage.
35. for geospatial base data for State and local government functions and tasks, you can use the LatPo or other permanent global positioning the base station or the system if the permanent global positioning coordinates of the base detection error standard deviation does not exceed 20 mm against the national geodetic network.
36. If, as a result of the geodetic work obtaining geospatial base data for State and local government functions and tasks, use the other permanent global positioning the base station or the system, it validates the Agency.
37. The permanent global positioning system on the base station or the validation Agency is carried out in accordance with a written request that includes the permanent global positioning the base station, the LK-92 XYZ coordinates, grid detection error standard deviation against the State geodetic network, geodetic data used in the calculation and measurement system for the use of the standard deviation.
38. the Agency for the conduct of validation for a limited time receive access to this provision referred to in paragraph 37 of the permanent global positioning the base station or system. The permanent global positioning the base station or the system validation by control and kamerāl, it determines the actual determination of coordinates error standard deviation against the national geodetic network and the standard deviation of the actual measurement of system use.
39. The rules referred to in paragraph 38 of the validation of the results obtained and their standard deviations in the homepage of the Agency shall be published on the internet.
VII. The geodetic reference system for 40 of the geodetic reference system used in determining the characteristics of single point coordinates, height, and gravimetric system ģeomagnētisk.
41. Information about geodetic networks builds up national geodetic network information system.
42. the national geodetic network information system consists of a national geodetic network databases and local geodetic network database.
43. Information on national geodetic network national geodetic network database collects and updates the Agency.
44. the Agency shall provide the State geodetic network database for public access and updating.
VIII. The geodetic reference system maintenance 45. Geodetic reference system maintenance includes: 45.1. GEODESIC point survey and alignment;
45.2. the GEODESIC trying;
45.3. the maintenance and updating of the model;
28.2. the accumulation of information on geodetic network.
46. the Agency, in accordance with the State budget financing provides the national geodetic survey point of the network, and determine the geodetic reference system model.
47. If the point be geodetic or renewed, the GEODESIC point location with the property owner or legal possessor and the local authorities.
48. the national geodetic network repeatedly uzmēr to maintain the current value of its characteristics according to the provisions of paragraph 25 of the criteria set out in.
49. the national geodetic network trying to reuse the frequency determined by the Agency, subject to the following factors: 30.5. changes arising from the Earth's crust in the horizontal and vertical deformation and rate of change;
30.6. at international level made geodetic measurement campaigns;
30.6. economic activity in a specific country or local area.
50. Creating national height system, its starting point is the bottom of the century rapper "fr 002" Sloka.
51. at the national geodetic survey network point, ranking or trying to update the information in the national geodetic network database.
52. The Agency shall issue the internal regulations of the national geodetic network point, trying to organize the survey, and the national geodetic network information storage procedures at national geodetic network database.
53. If the planned economic activity or construction may affect the national geodetic network point, the safeguarding of lasting stability or permanence of the structure, operations, or the client reviewer planned activities with prior approval of the Agency. To coordinate the planned economic or construction activities, the operator shall submit to the agency or the client situation and a description of the planned activities. Requested by the agency or the construction of the planned economic activity analyst or the client is obliged to submit additional information to assess the situation, as well as to inform about the completion of the planned activities.
54. If you need a national geodetic network point moving, operating or planned construction of the investigator or by the Subscriber shall be borne by the State geodetic network and determine the movement of point work, through a contract with the Agency of the national geodetic network point.
IX. Closing questions 55. Agency information on triangulation network 1.-4. class, nivelēšan class 3 network and global positioning class 3 points puts the local geodesic database within six months of the date of entry into force of the provisions.
56. the Agency of the information in its possession on the triangulation network 1.-4. class, nivelēšan class 3 network, global positioning class 3 and poligonometrij network of digital point local authorities until 31 December 2011.
57. Local geodetic network uses existing triangulation network 1.-4. class, nivelēšan class 3 network, global positioning and poligonometrij class 3 points of the network in accordance with the laws and regulations of the local geodesic point in the installation, maintenance, as well as a procedure for the provision of information.
58. the charge for this 18 and 36 of the rules referred to in paragraph 1 shall be fixed in accordance with the validation agency fees price list of services.
59. in paragraph 9 of these regulations, the above requirements shall apply not later than 1 January 2014.
60. the information system set up and running up to the date of entry into force of the provisions and are associated with the geospatial information on the international scene, and that rule 59. data of the period referred to in paragraph 1 may be used for processing other cartographic projection, if the coordinate transformation of the transversal Mercator projection plane in accordance with paragraph 9 of these regulations.
61. The laws and rules that the entry into force of these regulations until the date of entry into force of the LK-92 and determines the coordinate labels, apply to the interpretation of the corresponding provisions in this paragraph 8.
Prime Minister v. dombrovsky – in place of the Minister of Defence Minister of Justice g. Smith annex 1 Cabinet 15 November 2011 regulations No 388-93 TK card page and map page stock Division in place of the Minister of defence, the Minister of Justice g. Smith annex 2 Cabinet 15 November 2011 regulations No 388-93 cards page of TCS breakdown maps scale 1:200 000, 1:100 000 and 1:50 000 in place of the Minister of defence, the Minister of Justice g. Smith annex 3 Cabinet 15 November 2011 regulations no 879 TCS-93 card page breakdown charts scale 1:25 000, 1:10, 000, 1:5000, 1:2000, 1:1000 and 1:500 in place of the Minister of defence, the Minister of Justice g. Smith