R-REC-SM.1598-0-200210-W!!MSW-E.doc - Rec ITU-R SM.1598 1 RECOMMENDATION ITU-R SM.1598 Methods of radio direction finding and location on time division

R-REC-SM.1598-0-200210-W!!MSW-E.doc - Rec ITU-R SM.1598 1...

This preview shows page 1 - 3 out of 8 pages.

Rec. ITU-R SM.1598 1 RECOMMENDATION ITU-R SM.1598 Methods of radio direction finding and location on time division multiple access and code division multiple access signals (Question ITU-R 28/1) (2002) The ITU Radiocommunication Assembly, considering a) that the considerable expansion of cellular radiotelephony networks increases the risk of interference within networks and to networks, especially in the boundaries of countries at the edges of station coverages operating by different operators and/or in the case of sharing frequency bands or adjacent bands; b) that the maintenance of a high level of quality of service is of paramount importance for the operators and the users of the service; c) that it is necessary to provide to the operators and to the regulators the necessary tools to investigate harmful interference; d) that the techniques used in these networks require acceptable methods of direction finding; e) that the interference complaints dealing with the modern cellular networks are often difficult to resolve; f) that the systems using time division multiple access (TDMA) and code division multiple access (CDMA) technologies form a significant portion of today’s radiotelephony services in the world; g) that the equipment with the capability of performing direction finding on digital signals is now commercially available, recommends 1 that capacities of direction finding of TDMA and CDMA signals using synchronization should be implemented in the fixed and mobile monitoring stations; 2 that the process of direction finding should use the principles similar to those presented in Annex 1 and methods explained in Annex 2 and in Annex 3. ANNEX 1 Processing of radio direction finding and location on TDMA and CDMA signals Concerning the radio direction finding of TDMA and CDMA signals, it is recommended to try to get a preliminary identification of the signal before or during the process of direction finding, in order to be able to use the applicable methods for radio direction finding of TDMA and CDMA signals. With this intention, an association between the techniques of radio direction finding and the techniques of preliminary identification are interesting. Indeed, the cooperative techniques are more effective in terms of precision and multisource context than the non cooperative methods.
Image of page 1
2 Rec. ITU-R SM.1598 A radio direction finder able to process the discontinuous signals such as TDMA, CDMA or time division duplex signals should thus allow the successive application of several methods intended to improve the accuracy of radio direction finding in blind context and real time in a first phase, according to the regular methods recommended in Annex 2. Single channel or preferably multichannel recording of the signal being the subject of radio direction finding.
Image of page 2
Image of page 3

You've reached the end of your free preview.

Want to read all 8 pages?

  • Fall '17
  • William Heywood

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern

Stuck? We have tutors online 24/7 who can help you get unstuck.
A+ icon
Ask Expert Tutors You can ask You can ask You can ask (will expire )
Answers in as fast as 15 minutes
A+ icon
Ask Expert Tutors