JPRS ID: 10340 WORLDWIDE REPORT TELECOMMUNICATIONS POLICY, RESEARCH AND DEVELOPMENT

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• Document Number (FOIA) /ESDN (CREST): CIA-RDP82-00850R000500030049-0
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• Original Classification: U
• Document Page Count: 14
• Document Creation Date: November 1, 2016
• Sequence Number: 49
• Content Type: REPORTS

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I~OR Ow'FI('1�:. :ISE ONI.Y'
JPRS L/10340
19 February 1982
Worldwide Re ort
~
TELECOMMUNICATIONS POLICY,
RESEARCH AND DEVELOPMENT
cFOUO 3ia2~
Fg f$ FOREICaN BROADCAST INFORMATION SERVICE
FOR OFFICIAL USE ONLY
1
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~
NOTE
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other characteristics retained.
Headlines, editorial reports, and material enclosed in brackets
" [J are supplied by JPRS. Processing indicators such as [Text)
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mation was summarized or extracted.
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enclosed in parentheses. Words or names preceded by a ques-
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The contents of this publication in no way represent the poli-
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MATERIALS REPRODUCED HEREIN REQUIRE THAT DISSEMINATION
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JPRS L/1034�0
19 February 19E2
- WORLDV~ IDE REPORT
TELECOMMUNICATIONS POLICY, RESEARCH ANL~ DEVELOPMENT
(FOUO 3/82)
CONTENTS
WORLDWIDE AFFAIRS
Pan-European Sateiiit~ Broadcasting Planned
(Kenneth Gols ing; THE TIMES, 18 Jan 82) 1
L1SSR
Automatic Monitoring of SVPG-2PG Equipment
(I. G. Gasin, et al.; VESTNIK SVYAZI, Aug 81) 2
Briefs
Large-Scale I ntegrated Circuits 9
_ WEST EUROPE
INTERNATIONAL AFFAIRS
Briefs
. French Help Australians With Satellite 10
British Participate in German Satellite 10
French-German Satellite Delayed 11
_ a _ [III - WW - 140 FOUO]
~ r, nn nr. rr~r . r r ror, nwtr
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- F'UR OH'F'!C'IA1. IISE UN1.1'
WORLDWIDE AFFAIRS
PAN-EUROPEAN SATELLITE BROADCASTING PLANNID
PM181607 London THE TIMES in English 18 Jan 82 p 3
[Kenneth Golsing report: "European Satellite TV Trial To Start in Spring"]
[Text] The first Pan-Europeari experiment to prepare for direct broadcasting by
satellite is likely to begin this Spring, when Britain, Austria, West Germany and
Italy, will in turn present a week's programmes, the best of their. outout, on
closed-circuit television.
An assessment of the experiment will follow; but experts believe that there is an
extremely strong chance of success. Many difficulties have to be solved but a
' f ull service could be possible by the end of the decade.
Representatives of the four countries will meet in Geneva on Thursday and Friday
to make arrangements. The first week of the experiment will probably be in the
Spring, the second in the Summer and the others in the Autumn and Winter.
Five other countries are interested in providing programmes for the service:
Holland, the Irish Republic, Portugal, Swi~zerland and Belgium (Flemish). Those
interested in receiving the service are Malta, Tunisia, Spain, Algeria and Belgium
(French).
The first of many conferences on broadcasting by satellite was held in Dublin 5
years ago. In 1980 European Broadcasting Union representatives met in Venice to
discuss an offer from the European Space Agency of free use for television experi-
m~nts of the two broadcasting channels planned for their L-SAT (large satellite)
proj ect.
The meeting resulted in the formation of a group of experts from the broadcasting
organizations of Britain (Independent Broadcasting Authority/Independent Television
Companies Association), France (TF1), Germany (ARD), Italy, Austria, Holland, Por-
_ tugal and Sweden.
The L-SAT project is planned to begin in 1986. The British Government has announced
that it will subscribe one-third of the cost (77m pounds); the other big partner
is Italy, al~o one-third, and participants include Canada, Holland, Switzerland,
Austria, Belgium, Spain and Denmark.
This year's experiment will attempt to come to terms with such difficulties as copy-
right, and the provision of a multi-sound signal allowing vie*,aers in different
countries to tune to their own language.
CSO: 5500/2102 1
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r~rc urri~~AL u5~; UNLY
USSR
AUTOMATIC MOIVITORING OF SVPG-2YG EQUIPMENT
= Moscow VESTNIK SVYAZI in Russian No 8, Aug 81 pp 29-32
[Article by I. G. Gasin, G. B. Zlotnik, and S. F, Ivanitskiy, engineers of TTsUMS-7]
[Text] The progressive method of operating repeater stations (UP) with maintenance
by an emergency call which is being introduced widely in the network provides for
9 automatic monitoring of the equipment of repeater stations and line channels and
transmission of a fault signal when they are damaged to the resi.dence of a techni-
cian (or, if necessary, to other services). The article "How RepPater Stations Are
Serviced 'by Call"' ("Vestnik svyazi", 1974, No 11) examines the designs of circuits
for monitoring line channels of transmission systems via balanced and coaxial cables
and the delivery of a"Fault" signal when the line channel is damaged in the section
- served by the repeater station.
However, besides the line channel equipment, many UP also have group equipment whose
work must also be monitored. The Territorial Monitoring Center of Intercity Tele-
phone Communications and Television No 7(TTsUMS-7) developed and introduced a de- ,
vice which makes it possible to monitor the SVPG-2PG separation equipment used wide-
' ly in the network,
The SVPG-2PG bay separates two primary groups from the spectrum of the line channel
of tt~e transmission system K-60: instead of the two groups separated in the trans-
mission, two other primary groups are introduced in the same spectrum. The sepa-
rated four groups (two of one direction and two of the other) are monitored by al-
ternate connection to the pilot channel receiver PKK of 84.14 kHz with the aid of
the scanning circuit of the equipment; however, *he groups introduced.to transmis-
sion are not monitored, The device developed ~y TTsUMS-7 automatically monitors the
primary groups introduced into thetr~snission; if there is a fault, it determines
the section of the damage (in a monitored or in a nanmonitored equipment) and forms
"Damage" signal when there is a fault in the monitored equipment, This makes it pos-
sible, firsrly, to monitor the entire equipment of the SVPG-2PG bay, including its
transmitting part and, secondly, to prevent unjustified calls to the technical pre-
sonnel when another (transmitting) UP is damaged~
For monitoring the condition of the transmitting part of the SVPG-2PG equipment,
group KCh ar.e isolated from the line channel on transmission, When their level de-
viates beyond the ~riggering limits of the "emergency" relay, a signal about the
malfunctioning of the transmitting part of the equipment of the given UP forms in
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the PKK (�2.61 dB) (it is understood here and hereafter that the groups introduced
into transmission are formed at the given station, and are not transitory), Then,
in order to determine whether or not the receiving part of the separation equipment
is in good order, the KCh level of this group in the line channel is monit~red. If
this level is normal, it can be said that the monitored equipment is dainaged; if the
_ deviation from the norm at this point exceeds 2.61 dB, then the damage is beycnd the
limits of that UP.
Tl~us, instead of four monitoring points provided for by the SVPG-2PG equipment, 12
points are monitored (additionally, four points in the line channel in reception and
- four in transmission).
_ All points are ~nonitored i.n succession by the PKK 84.14 which is located in the
SVPG-2PG equipment (Figure 1). The interrogation cycle begins with the position in
which the scanning circuit is set hy pressing the button "Start" in the PU [control
panel] of the ARU [automatic level control]. The PKK 84,14 monitors the first group
being separated and delivers one of the three signals: "Normal", "Emergency", or
"Adjustment", If tlie KCh level is normal in the group, when the cadence pulse ar.-
rives, PKK is switched to contr~l of the same group on transmission in the line ct~an-
nel, If the "Adjustment" signal arrives, scanning stops and the amplification of
the PPR of the PG of the group is changed in the 3irection of the normal level of
KCh, When the norm is reached (or when a pulse arrives from the time relay RV), PKK
switches to monitoring this ~.roup on transmission in the line channel.
If PKK delivers the signal "Emergency", the device interrogates the memory cell
which stored information on whether or not the KCh level of the ~iven primary group
in the spectrum of the line channel is normal. At the time o� t}~e initial connec-
tion, there is no such information in the memory cell (state "0"), and PKK is switch-
e~i to monitoring the KCh level of the damaged group in the line channel, If the
_ KCh level is not within normal limits at that point tc~o, the scanning continues and
tt~e receiver is connected for monitoring the same group on transmission the dam-
age is not in the moni.tored equipment. If there is no emergency signal from PKK
during the interrogati~n of the damaged group in ~he line channel (this corresponds
to a damage in tne monitored equipment), the memory cell is switched to the state
"1" and PKK is connected a;ain to the damaged group, At that time (as a result of
- "1" state of the memory cell), the scanning stops; the pointer indicator of PKK
shows the KCh level of the damaged group; a signal is switched on which can he trans-
mitted to the residence of tl~e maintenance personnel and to other services.
When the group is monitored on transmission, and when there is no "Emergency" sig-
nal from PKK, the scanning continues, PKK is connected for monitoring the second
isolated group, However, if the KCh level in the group on eransmission is not with-
in normal limits and PKK delivered an "Emergency" signal, then tl~e scanning stops
and the emergency signaling is switched on: a damage in the transmitting part of
the monitored equipment; at that time, the pointer indicator of PKK shows the group
KCh level of the damaged group. The monitoring of the three remair~i.n~ groups is
done in tt~e same way.
The four separated PG are connected to PKK with the aid of diode relays J1P -1
,T~p -4 contained in the SVPG-2PG equipment which are controlled from the automatic
control unit (Figure 2). The primary groups monitored in the line channel are
3
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Ilepexod e xonmpon,r IY tpynmi ev ntptBavt ~ 1~
Na~amue ,rHOneu ,OytK"
' XoHmpom 1 tpynnu ~ 3 ~
Ha cp~enr
_ ~4)Napxa CocmdiMr~e Ascau~ ~6)
~1 KX
Pezyau~
Ka, ~ 9 )
Cocma.vHUt ,I'
PetunrtpoEna ,~veriKu
!'zpynmr ~8~ nanam
. Key: 1. Transition f.rom
10) 13 monitoring group IV
Hem E~m~ A'a~mpon~ A aprc~ I zpynnnt on transmis s ion
cutsa.~ ncepr~rBcNn~i NMdux~~cua ltpqanw. 2~ pressin "Start'~
1 c PB ? r~y^~~~ 4 OcmQnae o4tt�NU~?. $
~1 L A!!N~(%NOM C(/LNQp(!JQ((Yl~ button
a ~PaK~~ na Don
~ 2 3. Monitoring group I
- on reception
4. Norm
CacmaiMrre ~ S. PKK state
(15) nKr,
6. Emergency
IloEpexdenue B xcHmponu� 1h~~Jdp~~dtNUe ne d 7. Ad justment
pyeMaM o6apyBolcNUS. Kanmp~aupqe- 8. Ad justment of group I
BKSro~rnut M~r o~opydaOcMUrt
,rvesxa naM,m~ 9. State of inemory cell
10. No
~ 11, Is there a signal
from RV?
KONO1p0lIf trn;mmr na n:~eacv?. (17) 12. Yes
8wrrrorexr:r n4rriea noM..mu
~ Aeop~,? ( )
CocmaaNUC
nn�,r
- ~4~ Hapha , Adapu.~ 1 tpynnu~ 1$~
Pety
.r aoCK~ .~a n:,7eDavt.
K OCmpN00 9QCLQNUI.
� l ~7 Cur~�,+~t~QUU~ na dan
- j9~ Konmpp~~ B~Cynn~ .
Md nprunt
Figure 1, Algorithm of Automatic Monitoring of SVPG-
2PG
- 13. Monitoring of damaged group in the line channel
14. Emergency in group I. Indication of group I. Scanning stops. Signal
delivered to residence
_ 15. Damage in monitored equipment. Memory cell switched on
~ 16. Damage is not in the monitored equipment
17. Monitoring of group I on transmission. Memory cell switched off
~8. Emergency in group I on transmission. Scanning stops. Signal sent to
residence
19, Monitoring of group II on reception
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connected to PKK with the aid of diode relays I.~P -5 and ~p -6, Since group IV ~
~ in the line channel is in the spectrum of 60-108 kHz (group KCh 84,14 kHz), it is
not required to convert it for monitoring PKK 84.14, and it is only amplified in the
unit YC 60-108. Group V in the line channel is in the spectrum of 12-60 kHz (group
KCh 35,86 kHz), therefore, for monitoring its PKK 84,14, group V is subjected to
conversion with the aid of a carrier frequency oF 120 kHz, having first passed the
FNCh [low-pass filter] I( -60 which filters signa?s of other groups. The filtra-
- tion, conversion and ampYification are performed in the standard IITIp II P- S
unit.
(1 ~ p.e1 rr. nr....
.e,
2 e.~ o- ~-e ~n�r
~ ~utc/a+r R: ,~?-t YN
a~ (4) ~~e .t,�z
r~6 e~,evk~w m~a
~2~ ~r~ada.o R~ ,~o�! a0~w,,,w
_ ~ilnnu
aJ~~ 6 ~ 1/ J
7!I
r~�r D RQR ~
a! :Ir ACO 40-�
- o {;1 ~ / ~ 1 OI( ~
'7 ~ ' a~.u.r
:Y[n i(~ v
1927 >
~C-S
R9 ::d ~ ~ ~ iC
5! - ~Od. 60 - 'Of
nn +r-t
~r, r'-.~'.-�_�_,
r -fu,ra -J ~ ra oe dv�i
l'6O
L._. ____.J
~zo.r,~
Figure 2. Diagram of Connections of PKK 84.14 kHz to Primary
Groups and Line Channels
Key: l, Line channels 4, Separated primary groups
2, Trans~ission 5, Group
3. Reception 6, kHz
7. PKK
Diode relays ~IP -5 and ~ p -6 pass si~nals o~,~ly during the interrogation of the
line channels and work a~ternately: J1p -S switches on during the interrogarion of
~roup IV, and n p-fi during the interrogation of group V.
Connection to the line channels on a transmission is accomplished throug}~ line
diode relays ,~P-7, J~P -8 and high-resistance resistors R1-R4. Relay IIP -7
is switched on durin~ the mor~itoring of the groups ~ the direction F, -A; relay
JTF -8 during the monitoring of the group of the direcCion A- b, Since
the monitoring of ~he ~roup KCh in the line channel on reception is done rarely, in
order to increase tt~e cross talk attenuation fran transmission to reception,connection
to the line channel on reception is don~ wiCh the aid of electromagnetic relays of
the RES-9 type and high-resistance res~.sCOrs RS-R8. Relay P2 is switched on wl~en
it is necessary to monitor the groups of the A- F, direction; relay P3 ~-A
direction, Resistors R9 and R10 serve for matching the output resistances of the
diode relays j~p-7 and ~p -8 with the inpu~ resistances of units YC 60-108 and
- IIIIp IIP -5.
5
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r~~K ~~rr~t u~r. uIVLY
The number of monitored points is increased by using an additional shift register
consisting of three R-S triggers (Figure 3), The additional shift register together
with the main shift register consisting of four triggers which are in the scanning
- circuit of SVPG-2PG make it possible to obtain 12 states of the registers which cor-

~ respond to 12 required points of monitoring.
~
` 2~ Raeaaemn J-.2 Dtu r:(onneumt~~+~wu rfl~rolua pet~:+ny ~ ~
~1` ~71..7i ,7lA% ~ i
J ! 0: I T~~ p ft; ;~J
J 1 v I S Y J 7 5 r i
r..,~mu. .
7.:acnea ~ y R v R r a r
~ _ ~
�'y:'~~ _ � ~ -
~ T xay~r~~
~ ~G.~III/Y :d~: YI( D~L:.:'RD � ~ MydlAY�
i ,1u7pamap
r r r, a r, a
~ S~ Y 5 I . Y S Y ~
p ~ t i ~~1 t r ~ 1 i
L._._.-.-.-~ - -
Figure 3, Circuit Diagram of Shift Registers
Key: 1, Multivibrator
2. C~ntacts 21-22 of reLay P1...P4
of PU ARU
3. Additional shift register
4. Main shift regi.ster
5. Biased multivibrator
The outputs of the triggers, through the logic circuits (not shown in Figure 3),
control the switching of the diode relays ~P 1-J,~P 8. In each of the registers,
one trigger is always in the "1" position, and the remaining are in the "Zero" po-
sition. For example, when the "Start" button is pressed, triggers T 21 and T'z 2
are set to the "1" position. In the mode of normal functioning, i.e., when tliere
is no "Emergency" signal from PKK, Tf'2 is bypassed by the contacts of relay P1.
Moreover, there is an auxiliary trigger T Z 0 with a counting input (upper left in
Figure 3),
The monitoring of the groups in the mode of normal functioning progesses in the
- following manner, Tt~e auxiliary trigger T z 0 passes each second pulse from the
plate of the multivibrator in Che PU ARU unit to the input of the additional shift
register. Witi~ eac}i positive pulse passing to the input of the register, its trig-
- gers T~+-1 and T~- 3 change their states, the states of these triggers being oppo-
site to one another,
If T'L1 is in the "1" stare, then one of the separated groups is monitored; if T~.3
is in the "1" state, then one of the groups on transmission is monitored, When T-~3
changes from the "1" state to the "0" state, the diff.erentiated positive pulse from
its autput goes to the input of the main shifC register in the PU ARU unit, at which
time the next trigger of rhe main register changes to the "1" state.
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Depending on which of the triggers of the main register is in the "1" state, one of
' the four separated (introduced) groups is switched to PKK.
When there is a failure in a sepurated oroup, signals from PKK are delivered and at
that time the relay P1 is switched on, shunting with its contacts the contacts of
the group relays in PU ARU and restoring the passage circuit of cadence pulses,
Other contacts of P1 switch. the output of T~zl to tiie input of T'L2, preparing its
switching to the "1" state, which corresponds to the monitoring of the damaged group
on reception in the line channel. At that time one of the line relays P2 or P3 is
switched on,
During the switching of one control group to another, it is possible that the con-
tacts of the relay "Emergency" in PKK touch each other instantaneously, which could
lead to errors :.n the evaluation of the state of the channels. Therefore, the re-
ception of information about the state of the channels is done in the second half
of the time unit when the "Emergency" relay of PKK has already assumed the establish-
ed position, For this, with the aid of trigger T 2 0, each time unit (the time he-
tween two consecutive pulses at the input of the additional register) is divided
into two half cycles and interrogation of the "Emergency" relay of PKK is done dur-
ing the second half cycle, when T z 0 is in the "1" state.
Tlie location of the damaged section is determined during the monitor.ing of damaged
group in the spectrum of the line channel. If no damage signal is received in this
' case from PKK, then it is taken as a damage of the moni~ored equipment, the memory
cell switches to the "1" state, the biased multivibrator generates a single posirive
pulse which sets rhe additional shift register to the initial position, and PI~K re-
turns to monitoring the separated damaged group, A damage signal arrives again from
PKK, however, since the memory cell is now in the "1" state, the logic device pro-
duces a signal about a damage in the monitored equipment; at the same time, relay
P1 in the automatic control unit switches off;the cadence pulse circuit breaks, and
scanning stops. When the damage is corrected, the group relay in the PU ARU unit
is swirched off, the cadence pulse circuit is restored and scanning of the monitored
points starts again. Tf during the monitoring of the damaged group there is a dam-
age signal from PKK in the spectrum of the line channel (damage is not in the moni-
tored equipment), then, with the arrival of the next cadence pulse, trigger T i3 of
the additional register is set into the "1" position, which corresponds to the mon-
itoring of the damaged group on transmission; the contents of the memory cell are
erased.
If a damage signal arrives from PKK during the monitoring of a group on transmis-
- sion, tl~en, firstly, there for.ms a signal about a damage of the group in the trans-
mitting part oF the monitored equipment and, secondly, relay P4 switches on whose
contacts break the cadence pulse circuit and stop scanning. At a normal group KCh
level in the line channel on transmission, the arrival of the next cadence pulse
returns the additional register to the initial state, and the shift register T 2 II
in the main shift register assumes the "1" state, which corresponds to the monitor-
ing of the second group on recepti,~ The algorithms of the monitoring of all. four
separated groups is analogous, 91.gnaling about damages of a group are performed
with the aid of a special relay whose contacts deliver "ground" into the signaling
circuit,
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The device is designed in the form of three blocls arranged in free areas of the
SVPG-2PG bay, an automatic control unit, and two standarc! units YC 60-108 and ?Tr p
nj'-5. The circuit of the automatic control unit is arranged on three plates; it
has four plates of the diode relays AP 5-j~P 8,
An automatic control unit was installe~i and has beer. ~perating steadily at one of
the repeater stations maintained "on call", There were instances of damages in the
transmitting part of the monitored equipment which were determined by the device
described here and were effectively corrected,
The same nrinciple can be used to organize monitoring of other equipment of repea_*.er
stations, for example, the bay for separating secondary groups SWG and the group
- conversion bay SGP,
COPYRIGHT: Izdatel'stvo "Radio i svyat"', 1981
10,233
CSO: 5500~1009
8
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~
USSR
BRIEFS
LARGE-SCALE INTEGRATED CIRCUITS Microelectronics and optical electronics pro-
ducts of high level of integration which ensure high technical and economic indexes
are used wideiy in the latest communications equipment, particularly in the equip-
ment for local networks. Speciali~ed large-scale integrated circuits (BIS) are be-
ing developed at the Moscow Electrotechnical Institute of Communications (MEIS) in
collaboration with industrial organizations of other departments on the basis of ec-
onomic agreements. At the last meeting of the Scientific and Technical Council of
the USSR Ministry of Communications, MEIS presented a report on "Speciali~ed BIS as
the Basis of the Development of Digital Communication Systems" wnich dealt with the
basic directions in the development of BIS for electronic communication systems and
subscribers' digital optoelectronic data transmission systems and showed that the
majority of BIS for these systems can be produced on the basis of the series-produc-
tion technology which has been developed in the microelectronic industry. The Scien-
tific and Technical Council approved the direction of their work on the substantia-
_ tion of the nomenclature and functional characteristics of BIS and stressed the
necessity of extensive standardization of communications equipment. For this pur-
pose, GNTU [Main Scientific and Technical Administration] and sectorial main admin-
istrations of the USSR Ministry of Communications must, in an organized and system-
atic manner, ensure the principle of inte~rated development of systems and the ele-
ment base on the basis of a communications network model which has potentialities
for the development and expansion of communication services. [By I. P. Petrova]
[Text] [VESTNIK SVYAZI in Russian No 8, Aug 81 p 25] /~OPYRIGHT� Izdatel'stvo
. "Radio i svyaz"', 1981] 10,233 �
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FOR UFNICIAL IIS~ UNI.Y
INTERNATIONAL AFFAIRS
BRIEFS
FRENCH HELP AUSTRALIANS WITH SATE LLITE--The French company Matra has just signed
with the Australian National Univ ersity a protocol of agreement providing for the
- transfer of technology for carry i ng out the "Starlab" project, ir~ the eventuality
of selection of the French firm and its associate British Aerospace for construc-
tion of the future AUSSAT Austra lian telecommunications satellites. Starlab is a
joint project among Australia, th e United 5tates and Canada for building a large
space telescope to be put into o rbit by the American Space Shuttle in 1989. Aus-
- tralia is participating in this p roject with the supplying of a considerable part
of the future telescope's instrumentation--in particular, a photon-counter system.
The Australian participation in the Starlab project is reported to total about
$A 24 inillion. Prof Don Mathewso n, director of the Mt Stromlo-Siding Springs ob-
servatory, is responsible for Sta rlab's Australian instrumentation. The signing of
the agreement between Matra and the Australian university follows the information
- visits by Matra engineers to Australia and by representatives of the Mt Stromlo ob-
servatory to Matra in recent mon ths. This compensation agreement places the com-
pany Satcom International, in wh ich Matra and British Aerospace are associated, in
a good position in relation to ii:s competitors in the AUSSAT project. The Austra-
lian government desires to obtai n from the future contractors about one-fourth of
the amount of the AUSSAT program contract in the form of space-technology transfer.
This would be a means for Austra lia ~o train its industry in space techniques, with
a view to future projects. [Tex t~ [Paris AIR ET COSMOS in French 12 Dec 81 p 43)
11'L67
BRITISH PARTICIPATE IN GERMAN SAT ELLITE--Great Britain has decided to collaborate
in the FRG project for the ROSAT scientific satellite, which is to be launched at
- the beginning of 1987 for study of X-rays. The British Science and Engineering Re-
search Council (SERC) will parti cipate to the extent of 5 percent, or 8.75 million
pounds, in this project that totals nearly Fr 2 billion! The SERC will furnish an
0.5-m telescope making it possib le to detect X-rays of longer wavelength and uver a
wider field than the satellite's British 0.8-m satellite. ROSAT will seek in par-
ticular X-ray sources 100 ti~:es weaker than those discovered to date, notably by
the American HEAO, the British Ariel 6, and the Japanes Hakucho satellites. It is
- thought that it should thus disc over 100,000 new X-ray sources, of which it will
study ~~averal thousand in detail. The specialists are expecting a lot from ROSAT,
which will be three times more s ensitive than the American HEAO 2 satellite, alias
"Einstein Laboratory." ~ The ROSAT satellite will go into service after the European
EXOSAT satellite, which will be launched in 1982, and before the future AXAF satel-
lite of NASA, which should be launched in the mid-1990's. [Text] [Paris AIR ET
COSMOS in French 19 Dec 81 p 60) 11267
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FRENCH-GERMAN SATELLI~E DELAYED--Launching of the first two experimental di-
rect television satellites, TDF 1 for FrancA and TV SAT for Germany, has
been postponed for about 6 months due to delay in setting up industrial fa-
_ cilities for the program, official sources state. Delivery of the satel-
lites is now planned for 5 February 1985 ir_ the case of TV SAT, and 5 May
1985 for TDF 1, which will postpone launching until May 1985 for the German
satellite and September 1985 for the French. The firm Telediffusion de
France, which will use TDF 1, would have preferred its satellite to be orbi-
te3 in July 1985, but tha.t launching slot is now reserved on a priority ba-
sis for the ESA jEuropean Space Agenc~7 Giotto comet probe, whose launching
on 10 July 1985 is imperative so that it ma.y overfly Halley's Comet when
the latter next appears. The experimental satellites TDF 1 and TV SAT will
be built by the Franco-German group Eurosatellite GmbH, which includes the
French firms Aerospatiale and Thomson-CSF, arid the German firms MBB and AEG-
Telefunken. An initial contract for DM 100 million has already been signed
this year for the preliminary phase of the work. The builders are now await-
ing the major contract, which in principl.e is to be si ned in March '1982.
rText7 ~Paris AIR ET COSMOS in French 2 Jan 82 p 4~ ~rticle by Pierre
_ Lan~ereux~ ~OPYRIGHT: A. & C. ~98~ 6145
CSO: 5500/2081 END
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