Author Topic: CIS Cosmos sat  (Read 1326 times)

Offline Josh

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CIS Cosmos sat
« on: August 08, 2017, 0324 UTC »
149.375MHz fm fsk 0313Z 08Aug17


COSMOS 2454 in a secret Russian military spacecraft believed to be Parus navigation satellite for the Russian Defense Ministry. Parus satellites circle Earth in 620-mile-high (1,000-km-high) orbits over the poles. The new Parus spacecraft will likely be renamed Kosmos 2454 when it joins Russia's military satellite fleet.
https://www.n2yo.com/satellite/?s=35635

Description: A chain of five satellite receivers observes signals from the Russian Low Earth Orbit (LEO) satellites. Two signals transmitted coherently at frequencies 150 MHz and 400 MHz are received and their phase difference is used to calculate the ionospheric electron density by means of statistical inversion. The results are shown in terms of electron density plots in a vertical plane above the receiver chain. In an ideal case the satellite flies along the chain. If this is not the case, the plot is a projection from regions outside the vertical plane. In order to estimate the validity of the results, check the satellite path in each case. 
http://www.sgo.fi/Data/Tomography/tomoDescr.php

Offline sat_dxer

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Re: CIS Cosmos sat
« Reply #1 on: August 08, 2017, 1440 UTC »
Kosmos 2454 was launched on 21 July 2009
Orbit: 915 x 944 km 82.6° inclination
(typical 950 km × 1005 km, 82.9°)
The next in this series Kosmos 2463 was launched on 27 April 2010.

The Parus (Russian word for Sail) program began in 1974 with the launch of Kosmos 700

They are reported by various sources it acts as data relays for the US-P (EORSAT) ocean surveillance satellites.
« Last Edit: August 12, 2017, 1832 UTC by sat_dxer »
Most times & frequencies posted are only an approximation.
Due to the insubstantiality of any “control list” its best avoided and never used.
-30-

Offline Josh

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Re: CIS Cosmos sat
« Reply #2 on: August 08, 2017, 1745 UTC »
It musta passed right overhead, it came in, built strength, faded abruptly, and came back in for a bit. Haven't heard a russkii satskii in ages, last time was in the late 80s on 150.0MHz. Need to get the v/uhf sdr going on these sigs and see if any decoders will reveal anything.
Apparently the actual qrg is 149.940.
« Last Edit: August 08, 2017, 1806 UTC by Josh »

Offline Josh

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Re: CIS Cosmos sat
« Reply #3 on: August 11, 2017, 0306 UTC »
149.940MHz fm fsk 0300Z 10Aug17

Offline Josh

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Re: CIS Cosmos sat
« Reply #4 on: August 12, 2017, 1530 UTC »
149.940MHz fm fsk 1516Z 12Aug17
Long pass this time, musta been right over head.
« Last Edit: August 12, 2017, 1532 UTC by Josh »

Offline sat_dxer

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Re: CIS Cosmos sat
« Reply #5 on: August 12, 2017, 1846 UTC »
A useful link:
http://web.archive.org/web/20130626213107/http:/www.alancordwell.co.uk/satellite/russian/index.php

Consider using some current Two Line Elements in a tracking software program to see which one was "right over head"
Most times & frequencies posted are only an approximation.
Due to the insubstantiality of any “control list” its best avoided and never used.
-30-

Offline Josh

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Re: CIS Cosmos sat
« Reply #6 on: August 12, 2017, 1901 UTC »
Thanks for the link. Was wondering where I could go to see what bird was singing.

Offline Josh

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Re: CIS Cosmos sat
« Reply #7 on: August 13, 2017, 1726 UTC »
Kosmos2454 was overhead around noontime here. The track was pretty much right overhead.
https://www.n2yo.com/satellite/?s=35635

Offline Josh

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Re: CIS Cosmos sat
« Reply #8 on: May 26, 2018, 1805 UTC »

Offline sat_dxer

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Re: CIS Cosmos sat
« Reply #9 on: May 28, 2018, 0208 UTC »
The 1980 paper referred to in the rtl-sdr article is entitled:
The Russian Satellite Navigation System
Philosophical Transactions of the Royal Society of London, Vol. 294 pp. 297-315.

Other Kettering Group papers worth finding on the subject can be seen in:
Journal of the British Interplanetary Society Vol. 29 pp. 307-316 (1976)
Soviet Space Programs:1976-80 Part 3 US Senate committee Print (May 1985) pp. 782-783, 979-987
Space Communication and Broadcasting 4 (1986) pp. 51-61

The youtube video is interesting by not very informative. 
Most times & frequencies posted are only an approximation.
Due to the insubstantiality of any “control list” its best avoided and never used.
-30-

Offline Josh

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Re: CIS Cosmos sat
« Reply #10 on: June 03, 2018, 1652 UTC »
There goes the Ruskii bird at 1649Z, strong sig.

(149.940MHz Kosmos2454 fm fsk)

Offline sat_dxer

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Re: CIS Cosmos sat
« Reply #11 on: June 12, 2018, 2330 UTC »
One aspect of the Tsiklon-B navigation system is that satellites in planes 1 and 4 transit on 149.97MHz; ones in plane 2 on 149.91MHz; ones in plane 3 and 6 on 149.94MHz;and satellites in plane 5 on 150.03MHz.
The Parus constellation is made up of six orbital planes, spaced at 30° intervals.
Most times & frequencies posted are only an approximation.
Due to the insubstantiality of any “control list” its best avoided and never used.
-30-

Offline ChrisSmolinski

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Re: CIS Cosmos sat
« Reply #12 on: June 13, 2018, 1115 UTC »
I am just getting back into satellite monitoring, so this thread is very interesting. Are there any up to date lists of the frequencies of the various Russian birds that transmit around 150 MHz?
Chris Smolinski
Westminster, MD
eQSLs appreciated! Send to: csmolinski@blackcatsystems.com
NRD 545 / netSDR / AFE822x / AirSpy HF+ / 670 ft horizontal loop / 500 ft northeast beverage / 250 ft west-south-west beverage / 250 ft south beverage / 43mb sloping folded dipole / Crossed Parallel Loop

Offline Josh

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