signals-analysis.blogspot.com
Signals Analysis: 01/10/12
http://signals-analysis.blogspot.com/2012_01_10_archive.html
Вторник, 10 января 2012 г. FSK:PakNet - communication of data system (VHF). PakNet - communication of data system (VHF). Mode FM/GFSK, Br 8000. 108 and 27 ms. The example of PakNet signal. sent by geka. Pic1 General view (two radiochanneles). Pic4 108 ms Period in VMW. Pic5 27 ms Period in VMW. Pic6 the signal's ACF. One of the oldest systems of documentary communication. It was founded in 1985-86 years. In general PakNet, is not so much name of the protocol or a signal kind, but the name. Описание работ...
signals-analysis.blogspot.com
Signals Analysis: SA Update to version v 6.2.6.7: two monitors
http://signals-analysis.blogspot.com/2012/03/sa-update-to-version-v-6267-two.html
Понедельник, 5 марта 2012 г. SA Update to version v 6.2.6.7: two monitors. SA Update to version v 6.2.6.7. This is planned update. Correct work of SA in the systems with two and more monitors is realized In this update. Minor errors has been eliminated. English Version of our official site. Demo version, updates, online help and FAQ's, articles, features - all about Signals Analyzer software(SA) on English language. Versión en español en nuestro sitio oficial. SA demo files section. Varios artículos sobr...
signals-analysis.blogspot.com
Signals Analysis: SA update to version v 6.2.6.5
http://signals-analysis.blogspot.com/2012/01/sa-update-to-version-v-6265.html
Среда, 25 января 2012 г. SA update to version v 6.2.6.5. SA update to version v 6.2.6.5. In this update, possibility of resample and shift of the signals on fractional values of frequencies is added. Perhaps more important part of current updating, is the first stage of integration in SA calculator K. Nevertheless, even in such, very strongly simplified kind, it is already possible to receive authentic enough values K on some signals. English Version of our official site. Demo version, updates, online he...
signals-analysis.blogspot.com
Signals Analysis: New article: "GMSK and OQPSK"
http://signals-analysis.blogspot.com/2011/11/new-article-gmsk-and-oqpsk_707.html
Суббота, 19 ноября 2011 г. New article: "GMSK and OQPSK". It's a small article. Which dealt with the problem of identifying GMSK and OQPSK. We hope this will be useful. It's a small fragment. OQPSK and GMSK are tightly connected, as well as SDPSK and CPFSK, as well as pi/4 DQPSK and C4FM. Such "dualism" is spread enough, and connected/linked by the fact that often some modes of frequency shift keying at some conditions, smoothly flowing and/or aspire to acquire the shape of phase manipulation. Then the s...
signals-analysis.blogspot.com
Signals Analysis: 09/24/11
http://signals-analysis.blogspot.com/2011_09_24_archive.html
Суббота, 24 сентября 2011 г. Scrambler: Hagelin HC-256, HF. Hagelin HC-256, HF. Analogue dynamical synchronized scrambler. The signal is here. Send by Angstrem. HAGELIN HC-256, HF. The analogue dynamical synchronized scramler. It sounds like "Pinocchio" :-). The features of this signal: the preamble is the same as two-channeles FSK-2 with the parameters ( look pic.1). There are short synchro-bursts also every 400 ms (look pic.1). Ссылки на это сообщение. Подписаться на: Сообщения (Atom). FSK, GFSK, MSK, ...
signals-analysis.blogspot.com
Signals Analysis: 02/13/12
http://signals-analysis.blogspot.com/2012_02_13_archive.html
Понедельник, 13 февраля 2012 г. PSK: VDL-2 (VHF) - AirSystem, PSK-8, Br - 10500. AirSystem, PSK-8, Br - 10500. Here is example of VDL-2. Sent by foregin collegues. The throughput of channel ATN in VDL-2. Is essentialy increased from 2400 bps (ACARS) to 31500 bps. As a whole, at appropriate quality, the signal is confidently enough analyzed and identified, there are no obvious features detected. Ссылки на это сообщение. Подписаться на: Сообщения (Atom). English Version of our official site. Parameteres of...
signals-analysis.blogspot.com
Signals Analysis: 03/05/12
http://signals-analysis.blogspot.com/2012_03_05_archive.html
Понедельник, 5 марта 2012 г. SA Update to version v 6.2.6.7: two monitors. SA Update to version v 6.2.6.7. This is planned update. Correct work of SA in the systems with two and more monitors is realized In this update. Minor errors has been eliminated. Ссылки на это сообщение. Подписаться на: Сообщения (Atom). English Version of our official site. Demo version, updates, online help and FAQ's, articles, features - all about Signals Analyzer software(SA) on English language. SA demo files section. Varios ...
signals-analysis.blogspot.com
Signals Analysis: PSK: TETRAPOL
http://signals-analysis.blogspot.com/2011/11/psk-tetrapol.html
Суббота, 5 ноября 2011 г. The trunking system for VHF, Br - 8000, mode GMSK. Perfect by the quality example of TETRAPOL. Sent by foregin collegues. An example of TETRAPOL (two channeles). Sent by foregin collegues. Pic3 The graphical spectrum. Pic4 Allocation of the channeles. Pic 5 Phase constellation. Pic6 Transitions in the constellation. Pic7 The signal's ACF. 025 is very interesting. I Will remind, GSM uses the filter of the Gauss with. Nevertheless, in TETRAPOL standard it is marked, that it is pos...
signals-analysis.blogspot.com
Signals Analysis: 10/07/11
http://signals-analysis.blogspot.com/2011_10_07_archive.html
Пятница, 7 октября 2011 г. OFDM, COFDM: DRM (DRM-E). Ch - 213, PSK-4, Br - 400 Hz, Sh - 444.4(4) Hz, k = 1/9. The excellent example of DRM . Thanks to IK1YDE. Pic2 The main signal's parameters. Pic3 The constellation in the channel. Pic5 ACF of the signal. As far as i know, the prespective of this standard in Russia are *foggy* enough, this record sent by collegues from Europe. Ссылки на это сообщение. Подписаться на: Сообщения (Atom). English Version of our official site. Описание работы с SA, полезные ...
signals-analysis.blogspot.com
Signals Analysis: 11/05/11
http://signals-analysis.blogspot.com/2011_11_05_archive.html
Суббота, 5 ноября 2011 г. The trunking system for VHF, Br - 8000, mode GMSK. Perfect by the quality example of TETRAPOL. Sent by foregin collegues. An example of TETRAPOL (two channeles). Sent by foregin collegues. Pic3 The graphical spectrum. Pic4 Allocation of the channeles. Pic 5 Phase constellation. Pic6 Transitions in the constellation. Pic7 The signal's ACF. 025 is very interesting. I Will remind, GSM uses the filter of the Gauss with. Nevertheless, in TETRAPOL standard it is marked, that it is pos...