1、QUESTION ITU-R 226/5*,*Characteristics of and protection criteria for radarsoperating in the radiodetermination service(2000)The ITU Radiocommunication Assembly,consideringa) that antenna, signal propagation, target detection, and large necessary bandwidthcharacteristics of radar to achieve their fu
2、nctions are optimum in certain frequency bands;b) that the technical characteristics of radars operating in the radiodetermination service aredetermined by the mission of the system and vary widely even within a band;c) that the radionavigation service is a safety service as specified by No. 4.10 of
3、 the RadioRegulations (RR) and harmful interference to it cannot be accepted;d) that some ITU-R technical groups are considering the potential for the introduction of newtypes of systems (e.g. fixed wireless access and high density fixed and mobile systems) or servicesin bands between 420 MHz and 34
4、 GHz used by radars in the radiodetermination service;e) that representative technical and operational characteristics of systems operating in bandsallocated to the radiodetermination service are required to determine the feasibility of introducingnew types of systems;f) that procedures and methodol
5、ogies are needed to analyse compatibility between radarsoperating in the radiodetermination service and systems in other services,decides that the following Questions should be studied1 What are the appropriate analysis procedures needed to conduct detailed compatibilitystudies between radars operat
6、ing in the radiodetermination service and system in other services?2 What are the technical and operational characteristics of, and protection criteria for radarsoperating in the radiodetermination service needed to perform detailed studies of compatibility withsystems in other services?further deci
7、des1 that the results of the above studies should be included in one or more Recommendations;2 that the above studies should be completed by 2005.NOTE 1 The radiodetermination service includes the radionavigation and the radiolocationservices (see RR 1.42 and 1.48)._* This Question should be brought to the attention of Radiocommunication Study Group 7, the WorldMeteorological Organization (WMO), International Maritime Organization (IMO), International CivilAviation Organisation (ICAO) and International Maritime Radio Association (CIRM).* Former Question ITU-R 226/8.
