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Thread: Pakistan's long range air defence radars

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    Pakistan's long range air defence radars

    The AN/TPS-77, formerly known as the TPS-117, is a mobile, active phased array, long
    range, L-band, 3D solid-state radar designed to perform airspace surveillance missions. It
    shares about 80-90% Line Replaceable Units (LRUs) and maintenance activity with
    the AN/FPS-117 fixed position radar system, and similar performance than the FPS-117
    and the TPS-59 radars. The TPS-77 incorporates COTS technology. In early November 2005 the US Air Force awarded Lockheed Martin an $89 million
    contract for the production and delivery of six long range AN/TPS-77 transportable
    radar systems to Pakistan. The TPS-77 military items were provided to Pakistan under
    the Foreign Military Sales (FMS) program. TPS-77s were ordered in support of Pakistan's
    air defense operations. The AN/TPS-77 is the latest configuration of the world's most successful 3D, solid-state
    radar design. This L-band, tactical transportable radar provides continuous high-quality
    3-D surveillance on aircraft targets out to 250 nautical miles and shares commonality
    with the AN/FPS-117 radar with regard to maintenance activity and Line Replaceable
    Units (LRUs). There are 127 AN/FPS-117 systems operational in 14 countries and many
    have operated for years completely unmanned in remote areas and in a wide range of operational environments. Easy to transport and deploy. Pakistani armed forces has a logistical advantage over its
    adversery by moving this radar to remote locations via its C-130 air crafts. the Lockheed
    Martin AN/TPS-77 all-solid-state, 3-D long-range surveillance radar meets today’s
    expeditionary forces’ needs for performance and reliability. It provides superior long-
    range detection, especially in weather and clutter, and 360-degree azimuth coverage. Radar has the flexibility to meet the evolving theater ballistic missile (TBM) threat. Field
    commanders can count on accurate target data at ranges up to 250 nautical miles and
    elevations up to 100,000 feet from a radar that can operate 24 hours a day, even with
    no on-site personnel. Simplified logistics and remote maintenance-monitoring
    capabilities reduce contribute to low cost of ownership. The system’s sophisticated
    performance monitoring and fault location system automatically recalibrates the radar to adjust for changes in the environment and component failures. The AN/TPS-77 offers the proven features such as * Solid-state, active phased array
    * Superior performing L-band operation
    * Modular, commercial-off-the-shelf components
    * Advanced pencil-beam architecture
    * Simplified maintenance
    * 99.7% operational availability * No onsite technicians required


    21st century Expeditionary Aerospace Forces need high performance, reliable radar systems that are easy to
    transport, easy to deploy and ready to operate immediately. To meet these demanding requirements, Lockheed
    Martin is now producing the AN/TPS-77 (formerly TPS-117), 3-D, long range air surveillance radar -
    the latest offering in the company’s proven line of all solid-state radars.
    The AN/TPS-77 leverages 15 years of Lockheed Martin investment in the continuous improvement of
    radar technology and combines it with the company’s experience in designing transportable radars for
    customers worldwide. The result is a new radar that places the best of the FPS-117’s performance,
    reliability and low cost of ownership in a package that is now tactically transportable by C-130 aircraft.
    Field commanders can count on accurate data on all targets at ranges up to 250
    nautical miles and elevations up to 100,000 feet from a radar that can operate 24
    hours a day - even with no on-site personnel. The AN/TPS-77 is in production and
    ready now for deployment around the globe.

    The AN/TPS-77 is an L-Band, phased array, all solid-state radar. The radar’s planar array
    antenna rotates to provide 360 degree azimuth coverage. As the antenna rotates, the radar
    transmits pencil beams that are electronically phase scanned to provide complete elevation
    coverage.
    Instead of a single transmitter, the AN/TPS-77 utilizes 34 all solid-state transmitters and
    receivers that are located on the antenna array - directly coupled to their antenna elements.
    This architecture eliminates high power rotary joints and central transmitters - two
    common single points of failure in most long-range radars. Only low-level IF signals pass
    across slip rings to off-array signal and data processing equipment. The processing
    equipment, along with customized operator interface and communications equipment, is
    located in a single ISO shelter.
    According to Skolnik’s Radar Handbook, "L-Band is the preferred frequency band for
    land-based long-range air surveillance radars." The AN/TPS-77 provides all the natural
    benefits of L-band, including superior long-range detection performance, especially in weather and clutter. In
    addition, full monopulse processing in both azimuth and elevation allows accurate position determination with
    every "hit" on a target.
    The all solid-state design of the AN/TPS-77 has proven its reliability. Comparable FPS-117 radars have
    consistently demonstrated mean-time-between-critical-failures (MTBCF) of more than 2000 hours. The
    AN/TPS-77’s fault tolerent architecture also allows it to perform within its specifications even if component
    failures occur. To eliminate the need for on site technicians, a sophisticated performance monitoring and fault
    location (PMFL) system automatically recalibrates the radar to adjust for changes in the environment and
    component failures. The output of the PMFL can be remotely accessed to monitor the radar’s performance

    High Reliability and Remote
    Maintenance Monitoring Enable a
    Smaller Deployment Footprint:
    • Simplified maintenance means
    fewer skilled technicians
    • No on-site technicians are required
    • A single technician can remotely
    monitor several radars from
    virtually anywhere
    • Requirements for on-site and
    theater spares are reduced
    • 99.7% operational availability
    ensures mission performance with
    fewer radars
    Benefits of Common FPS-117 and
    AN/TPS-77 Support Infrastructure
    • Reduced inventory of Line
    Replaceable Units (LRUs) and
    repair parts
    • Common test and support
    equipment can be used
    • Common training and technical
    manuals reduce logistics cost
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    Last edited by Jagga; 31st October 2013 at 03:33.

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    Re: Pakistan's long range air defence radars

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    Re: Pakistan's long range air defence radars

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    Re: Pakistan's long range air defence radars

    Pakistan has 6 of these solid state AESA radars.
    Each of 400 KM detection range. Thats the whole of the country covered.
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    Senior Member Express's Avatar
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    Re: Pakistan's long range air defence radars

    Quote Originally Posted by safriz View Post
    Pakistan has 6 of these solid state AESA radars.
    Each of 400 KM detection range. Thats the whole of the country covered.
    Awesome info. Thanks safriz bhai

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    Member Irfan Baloch's Avatar
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    Re: Pakistan's long range air defence radars

    we had a setback when our purchase of passive radars from Czech republic was blocked by the Americans. they also pressurized Sweden a lot to give us a watered down version of the AWACs systems.

    we are for sure the next Iran so they have started the process of degrading our military already for any potential future conflict.

    Silence and secrecy is the new norm of the modern times, keep the enemy guessing but this policy doest work if we have a western supplier. they leak information to not only all other Western countries but also the Indians.

    the army airdefence comes bottom of the food chain when it comes to resource allocation. only in early 90s they were made an independent corps in the past they used to be part of the artillery and called light AAK AAK.

    the Indians have constantly teased us until late 90s when their foxbat (Mig 27)reconnaissance jet broke the sound barrier over Islamabad, and we had nothing to intercept them in terms of our jets or SAMs foxbat ceiling was 80k feet and even our F-16s couldnt reach there.

    our true interception capability is unknown at the moment and is classified. the Indian air violations are not just trolling and tease but they are meant to suss out our capability and expose our reach , so sometimes they are allowed to escape if its seen that they are not threatening anything strategic and are just out to check our response time and type of response for a real attack.

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    Re: Pakistan's long range air defence radars

    It's actually very easy to understand -- Pakistan does not have much of a capability to defend itself because Pakistan does not have much of an economy

    Again, boys and girls, ECONOMY -- not the Awaami bullshiit you guys are to, where management makes money for themselves and their political bosses, but real ECONOMY, where property rights and ownership (private) is promoted, over idiot notions of sovereignty and nationalism
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    Re: Pakistan's long range air defence radars

    Quote Originally Posted by Muse View Post
    It's actually very easy to understand -- Pakistan does not have much of a capability to defend itself because Pakistan does not have much of an economy

    Again, boys and girls, ECONOMY -- not the Awaami bullshiit you guys are to, where management makes money for themselves and their political bosses, but real ECONOMY, where property rights and ownership (private) is promoted, over idiot notions of sovereignty and nationalism
    sovereignty and nationalism are good selling points when there is enough flesh to the bone e.g. replace sovereignty with "freedom" and you know what country I am talking about whose military budget is more than 28 countries combined that are trailing behind it in the spend,


    by the way, would privatizing national defence not help? look at Tony Stark of Stark industries for example he is not doing that bad is he? I think thats what you are pointing at.

    for me ends justify the means. here ends being "real" economy as you put it. the stranglehold of the public sector by my fellow chaps in Khakis has a very inefficient model a lot of good talent can be attracted and retained and a lot of in-house war toys can start coming out that can offer sovereignty and nationalism as an extra.

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    Re: Pakistan's long range air defence radars

    Quote Originally Posted by Irfan Baloch View Post
    sovereignty and nationalism are good selling points when there is enough flesh to the bone e.g. replace sovereignty with "freedom" and you know what country I am talking about whose military budget is more than 28 countries combined that are trailing behind it in the spend,


    by the way, would privatizing national defence not help? look at Tony Stark of Stark industries for example he is not doing that bad is he? I think thats what you are pointing at.

    for me ends justify the means. here ends being "real" economy as you put it. the stranglehold of the public sector by my fellow chaps in Khakis has a very inefficient model a lot of good talent can be attracted and retained and a lot of in-house war toys can start coming out that can offer sovereignty and nationalism as an extra.

    Precisely - see, that Sovereignty and nationalism, must not be EMPTY - you must actually produce, generate Wealth and well being for large majorities to then be able to speak of PROTECTING sovereignty in the name of nationalism --- but if your model is begging with a chip on your shoulder, well, like you said, it's very inefficient

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    Senior Member Wajid47's Avatar
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    Re: Pakistan's long range air defence radars

    Didn't realise we had any air defence
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    Re: Pakistan's long range air defence radars

    Quote Originally Posted by Wajid47 View Post
    Didn't realise we had any air defence
    funny but I see where you coming from

    someone I know is an old army veteran and during the time of Inra Gandhi he was commanding an Air Defence battery in Kahuta.
    he says they were all on the edge and there were combat air patrols, the low altitude area denial balloons were in the air and all the air defence batteries in the area were on full alert and the air raid sirens were constantly buzzing repeatedly whenever an Indian squadron took off from Sri Nagar / Pathankot or other forward area airports. they were all cleared to fire on the word notice

    the AAK AAK guns start firing in the designated area before even the aircrafts come in they divide the airspace in sectors for easy referene and all gunners have given names where they are told to open fire. army air defence has its own radars and our ground based PAF colleagues have theirs and they are linked with their airports as well. they were manning the SAMs in the area.

    according to him that night was one of the longest wait and at one point they started the fire and in the morning it was learnt that Indra was gunned down by the Sikh body guard for her brutal assault on the Golden Temple.

    oh by the way. its not a secret so I can share with you
    our reaction time for air raid is only 7 minutes. and with the small / concealed airstrips along the border containing Harrier jump jets by the Indians that reaction time is reduced to about 2 to 3 minutes.
    how about that eh? in air defence service there is hardly a dull moment. it cant claim to be at the same level of alert as PAF is which is always on war footing due to its proximity with India but its not that far either. now with the integration of air defence command and control it shares and sees what PAF sees.
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    Re: Pakistan's long range air defence radars

    Perhaps we should also look at how any potential adversary will disrupt our communications -- and if our reaction time is 7 minutes, with an adversary disrupting communication and effectively blinding us, how do we respond?

    You realize it's essential for any adversary to first blind us, make us deaf and dumb --

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    Senior Member Wajid47's Avatar
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    Re: Pakistan's long range air defence radars

    The excuses given are that our equipment and standing is to repel India but to me it is a dereliction of duty that our western border seems practically naked
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    Re: Pakistan's long range air defence radars

    Quote Originally Posted by Irfan Baloch View Post
    funny but I see where you coming from

    someone I know is an old army veteran and during the time of Inra Gandhi he was commanding an Air Defence battery in Kahuta.
    he says they were all on the edge and there were combat air patrols, the low altitude area denial balloons were in the air and all the air defence batteries in the area were on full alert and the air raid sirens were constantly buzzing repeatedly whenever an Indian squadron took off from Sri Nagar / Pathankot or other forward area airports. they were all cleared to fire on the word notice

    the AAK AAK guns start firing in the designated area before even the aircrafts come in they divide the airspace in sectors for easy referene and all gunners have given names where they are told to open fire. army air defence has its own radars and our ground based PAF colleagues have theirs and they are linked with their airports as well. they were manning the SAMs in the area.

    according to him that night was one of the longest wait and at one point they started the fire and in the morning it was learnt that Indra was gunned down by the Sikh body guard for her brutal assault on the Golden Temple.

    oh by the way. its not a secret so I can share with you
    our reaction time for air raid is only 7 minutes. and with the small / concealed airstrips along the border containing Harrier jump jets by the Indians that reaction time is reduced to about 2 to 3 minutes.
    how about that eh? in air defence service there is hardly a dull moment. it cant claim to be at the same level of alert as PAF is which is always on war footing due to its proximity with India but its not that far either. now with the integration of air defence command and control it shares and sees what PAF sees.
    yes...i remember the baloons at kahuta.I was there in 1994 as a visitor.

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    Re: Pakistan's long range air defence radars

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    Re: Pakistan's long range air defence radars

    How about SPADA 2000?
    Pakistan has plenty of them..

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    Re: Pakistan's long range air defence radars

    Quote Originally Posted by Muse View Post
    Perhaps we should also look at how any potential adversary will disrupt our communications -- and if our reaction time is 7 minutes, with an adversary disrupting communication and effectively blinding us, how do we respond?

    You realize it's essential for any adversary to first blind us, make us deaf and dumb --
    thats where passive sensors and radars come in that dont send radio waves to detect an aircraft but actually relay on whatver electromagnetic or radio emission is made by the target aircraft or the air turbulence made by it. and since such equipment is only looking for the origin of the source of those occurrences, they are impossible to Jamming.

    this is the Russian concept where it aims to down the American stealth by looking around the environment and notice the anomalies in the air which cant be subdued no matter what a stealth aircraft does. it can mute its signature but it cant do anything to the environment that is affected by its fast movement.

    after getting divorced by Americans in the 80s Pakistanis tried every back channel and quieter deals in the west to get hold of good technologies and in many cases they were disrupted by Americans who bullied the Europeans to pull out of the deals.
    creating an in house system and working with Chinese seems to be an only option although West (western Europe and America) is light years away from the Chinese in terms of technology.

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    Re: Pakistan's long range air defence radars

    Quote Originally Posted by Irfan Baloch View Post
    thats where passive sensors and radars come in that dont send radio waves to detect an aircraft but actually relay on whatver electromagnetic or radio emission is made by the target aircraft or the air turbulence made by it. and since such equipment is only looking for the origin of the source of those occurrences, they are impossible to Jamming.

    this is the Russian concept where it aims to down the American stealth by looking around the environment and notice the anomalies in the air which cant be subdued no matter what a stealth aircraft does. it can mute its signature but it cant do anything to the environment that is affected by its fast movement.

    after getting divorced by Americans in the 80s Pakistanis tried every back channel and quieter deals in the west to get hold of good technologies and in many cases they were disrupted by Americans who bullied the Europeans to pull out of the deals.
    creating an in house system and working with Chinese seems to be an only option although West (western Europe and America) is light years away from the Chinese in terms of technology.
    May be that's why PAF has spent many years on "Force multiplier" doctrine?
    Networking started in 1977 and currently is a t a very advanced stage.All radars,new and old are interconnected....
    There was an incident 2-3 years ago where Lahore airspace was closed for a few hours and no reasons given..I cannot find the news.But it was a small Indian drone which crossed border all the way into Lahore airspace.
    PAF could track the drone,but due to its small size and material,it couldn't lock on to it. The airspace was closed for civilian planes until our fighter jets could find the drone visually...
    Whatever happened of the Indian drone is unknown. But point being that even small drones with little radar cross section are currently detectable and can be vaguely tracked if not accurately.
    The software has been improved massively over the years.
    the same target is tracked by more than one radars from different angles,and the software decides if a blip on the screen is a target or clutter...
    If the same blip appears on two different radars at the same time,it is taken as target and tracked.. So that way without a powerful ultra modern radar..similar result is archived by Networking.Because most of PAF radars are relics from cold war era...But networked together,they work as a single giant radar... AKA force multiplier?

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    Re: Pakistan's long range air defence radars

    Quote Originally Posted by Wajid47 View Post
    The excuses given are that our equipment and standing is to repel India but to me it is a dereliction of duty that our western border seems practically naked
    i dont know how accurate is this diagram...

    but radar coverage looks good


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    Re: Pakistan's long range air defence radars

    OK a couple of point for [MENTION=784]Irfan Baloch[/MENTION] and [MENTION=43]safriz[/MENTION]

    The radar coverage is obviously insufficient -- we should know about potential threats approaching us, hundreds and thousands of miles away, not when they are overhead --- secondly knowing of the threat is not enough, we need to protect both the infrastructure and content of the communication, I don't think we have the where with all to do this -- Our adversary is not going to be India, but rather "coalitions" that will threaten us with or without India - that is to say our planning and capability should be of a design that is informed by that reality.

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