User:Feelfree~enwiki

Hi Feelfree! Thanks for the edit on Kolchuga. The entry was unclear so we need to resolve the English - see http://wiki.riteme.site/wiki/Talk:Kolchuga_passive_sensor#Edit_on_3_Oct_06. Thanks!

--Paul 05:57, 4 October 2006 (UTC)

RTD specimen identification

Hi Paul,

OK, I am sure that my English often is unreadable, so I will use a lot of words to be more explicit :).

I see you have a various contribution to the projects related to the ESM station. So, as you know, one of the important parameters of ESM is the time of the automatic identification of RTD (Radio Technical Devices) according to the Standard Description of the sources of radiated electromagnetic energy and the quantitative capabilities of that identification.

The number of signal parameters used for automatic identification depends on the implemented detection algorithm. Detection and identification are diverse procedures. The Kolchuga (before 1996) uses 40 signal parameters for automatic identification, Ramona(Tamara)- 4 parameters.

The high numbers of used parameters give the ESM the possibility to do the identification in two stages: first identification of RTD type and second the identification of RTD specimens inside that type. That means, at least theoretically, that ESM can identify the individual characteristics of the RTD implicitly maybe the individual aircraft or land unit. It can be said that specimens are the "fingerprints" of the RTD :) That is the way the constructors have been defined the terms RTD Type and RTD Specimens.

Around 1997 it’s been believed that the Avax AN/AYR-1 has capabilities to keep up to 500 (round figures :) classified RTD type in their automatic database of Standard Description of the Source Type (SDST). Ramona(Tamara)has up to 100 SDTS capabilities directory. Kolchuga has up to 100 of SDST with automatic identification of up to 500 specimens inside each type. Ramona(Tamara) doesn't have the automatic "fingerprints" (specimens) identification capabilities. Around 2000, the Kolchuga tripled their automatic database directory.

EMS detects anything that they receive, but can identify only the RTD that they already have in the Standard Description of the Source Type Database (SDSTDB) and in number not more than the constructive limits. In that order the sentence: "Kolchuga is able to detect and identify many types of radio devices" is inexact. Kolchuga (as any ESM) is able to detect any radiated electromagnetic energy at the site in respect of their sensitivity and frequency band, but can identify not more than 300 types of radio devices, and can automatically identify not more of 500 specimens of the devices for each defined type. That is done evidently with some probability factor. If some signal was detected and identification failed they will be shown and recorded as unidentified type or specimens.

"Suspiciously round figures" obviously come from the initial design specification provide by army, which operate with the targets number not the bits number, and become the constructive element of the ESM as a part of hardware implementation of Automatic Identification Algorithm. (Old stations, about we talk, is more "hard" than "soft")

Maybe some data is not so real, as often happens in this mater :) but at least they have been released by officials with different occasions. Generally speaking, from the point of view of data flow structure the Kolchuga has more similarities with Avax systems than with Ramona(Tamara). Ramona(Tamara) is a very good implementation. It seems that the difference between these stations appear due to the different intended purpose of the stations at the design stage, and not due to the technological capabilities of the constructors (except the nanoresonators, that permit Kolchuga to achieve -145dB sensitivity and better).

By the words.., I don't understand what means in English from technical POV: "antennas, which provide for high radio sensitivity within a 110dBW - 155 dBW swath". Kolchuga's antennas gain, I think, is "only" about ~35dB. What you think?

I don't think that all that technical mater is suitable for the article that must remain the general purpose encyclopedic review and not technical topic. If you want to help put few ideas into a better English and very short form suitable for the article, you are welcome to do that.

Thanks!

--feelfree feel 13:41, 6 October 2006 (UTC)

Many thanks for your clarification. See Talk page of the Kolchuga article for me details from me - I've tried to incorporate your comments into the main article. --Paul 15:03, 6 October 2006 (UTC)