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Oficina del Secretario General Radio- comunicaciones (ITU-R) Normalización (ITU-T) Desarrollo (ITU-D) TELECOM Exposiciones y Foros Miembros	Pagina Principal : Publicaciones Contributions to WP 3L (1998-2000) [3L/1] Documents to be considered in the 1998-99 study period [3L/2,3/4,3J/3,3K/2,3M/4] Questions to be brought to the attention of Study Group 3 and its Working Parties [3L/3,3J/5,3K/4,3M/6] Radiowave propagation studies for CPM-99 [3L/4,9C/7] Response to liaison statement from WP 9C concerning simulation of HF transmission through an ionospheric channel [3L/5] Response to liaison statement from Working Party 3L concerning simulation of HF transmissions through an ionospheric channel [3L/6] Liaison statement from Working Party 3M to Working Party 3L concerning development of Recommendation ITU-R P.531 and establishment of JRG 3L-3M [3L/7] Draft revision of Recommendation ITU-R P.1147 - Prediction of sky-wave field strength at frequencies between about 150 and 1700 kHz [3L/8] Further studies of the accuracies of the COST 238(PRIME) regional and of the ITU-R global monthly median maps of foF2 and M(3000)F2 [3L/9] Proposed revision to Recommendation ITU-R P.533 [3L/10] Draft revision of Recommendation ITU-R P.1147 - Prediction of sky-wave field strength at frequencies between about 150 and 1700 KHz [3L/11] Draft revision of Recommendation ITU-R P.371-7 - Choice of indices for long-term ionospheric predictions [3L/12] Information Document on ionospheric variability [3L/13] Question ITU-R 212-1/3 - Ionospheric properties - Information document COST 251 instantaneous mapping procedures [3L/14] Chairman, Rapporteur Group 3L-RG 1 (Realiability) - Recommendation ITU-R P.842-1 - Computation of reliability and compatibility of HF radio systems [3L/15] ITU-R HF field strength data [3L/16] Proposed revision to Recommendation ITU-R P.531-4 - Ionospheric propagation data and prediction methods required for the design of satellite services and systems [3L/17] Measurement and data bank - Conversion of HF sky-wave field strength to available receiver power [3L/18] Proposed modification to Recommendation ITU-R P.534-3 - Method for calculating sporadic-E field strength [3L/19] Report to WP 3L for the period January 1997 - September 1998 [3L/20] An objective evaluation of available LF/MF sky-wave propagation models [3L/21] Report ITU-R P.2011 - Propagation on frequencies above the basic MUF [3L/22] New RAL short-term forecasting method [3L/23,9C/22 Part 1] Systems for wideband HF channel simulations [3L/23,9C/22 Part 2] Systems for wideband HF channel simulations [3L/26] Chairman's Report (12-14 October 1998) - Ionospheric propagation [3L/27] Proposed revision of Recommendation ITU-R P.1147 - Prediction of sky-wave field strentgh at frequencies between about 150 to 1700 kHz [3L/28] Propagation on frequencies above the basic MUF [3L/29] Proposed modification of Recommendation ITU-R P.1239 - A probability function to predict the F1 layer occurrence and L condition [3L/30] Information Document on - Cost 251 instantaneous mapping procedure potential applications [3L/31] Chairman Rapporteur Group 3L-RG5 [3L/32,3J/48,3K/27,3M/93] Draft revision of Recommendation ITU-R P.341-4 [3L/33] Studies of the accuracies of the COST 251 regional and of the ITU-R global monthly median maps of foF2 and M(3000)F2 [3L/34] Additional modifications to the text of Recommendation ITU-R P.533 (Doc. 3/15) [3L/35] Information document on the combined impact of MSS interference and ionospheric scintillations on GPS receiver performance [3L/36] Report for the period October 1998-February 1999) - Prediction method development and computer testing group [3L/38] Chairman's Report (2-9 March 1999) Ionospheric propagation [3L/39] Liaison statement to ITU-R Study Group 3 - Ionospheric characteristics required by wide band HF ionospheric channel simulators [3L/40] Predicting the time delay of HF modes in Recommendation ITU-R P.533 [3L/41] Proposed changes to section 9 of Recommendation ITU-R P.842 [3L/42] Proposed revision of Recommendation ITU-R P.684-1 - Prediction of field strength at frequencies below about 500 kHz [3L/43] Local field-strength distribution in the LF and MF bands and its influence on the operation of digital broadcasting systems [3L/44] Frequency dependency of the random deviations that occur from day to day in the ground-wave field strength in the LF-MF range affecting the operation of digital broadcasting systems [3L/45] Proposed revision of Recommendation ITU-R P.684-1 - Prediction of field strength at frequencies below about 500 kHz [3L/46, 3M/155, 3J/83, 3K/70] Editorial modifications to P series Recommendations in accordance with Resolution ITU-R 44 [3L/47, 3J/84, 3K/71, 3M/156] Questions identified as suitable for approval by the alternative procedure according to Resolution ITU-R 45 [3L/48] Maximum electron density and peak height of the ionospheric E-layer [3L/49, 3M/166, 3J/93, 3K/80] Radiowave propagation studies for CPM-02 [3L/50] Incorporation of HF field strength data into the data bank D2MF [3L/51] Measurement and data bank [3L/52] Chairman, Rapporteur Group 3L-RG6 (Propagation below about 1.7 MHz) [3L/53] Proposed changes to Questions concerning ionospheric propagation [3L/54] Proposed revision to Recommendation ITU-R P.531-5 - Improved procedure for evaluating TEC [3L/55] Chairman, Rapporteur Group 3L-RG7 (Ionospheric channel simulation) - Status Report [3L/56] Report for the period March 1999 - July 2000 - Propagation on frequencies above the basic MUF [3L/57] Development of receiving system for the HF field strength measurement campaign [3L/58] Report for period 1999-2000 [3l/59] List of documents

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