The recent broadcast of the first CDMA signal from the new GLONASS-K satellite culminates a long series of events that began in 1989. A key participant gives a first-hand account of the history of many meetings, formal and informal, that created true interoperability between the two major satellite systems, giving users a modern GNSS in action. October 18, 1989, the Queen Elizabeth Auditorium in London, around 8:30 am. Unknown to me, two 60-minute periods were about to imprint themselves indelibly on my memory. I walked up the stairs to the exhibition booth of my company, Ashtech, at The Royal Institute of Navigation conference. My good friend, the late Ann Beatty, met me and asked, “Any news from home?” I thought it was just a casual customary question, and replied: “Thanks, all OK.” She had a strange look on her face. She continued: “Are all your family really OK?” I replied again: “Thanks, all good.” She then realized that I had no clue about the cataclysmic event that had hit the San Francisco Bay area. She abruptly said, “Don’t you know? The big one came! The big earthquake hit San Francisco!” Californians know the rumors that when The Big One comes, Nevada will have ocean frontage. Now she was telling me that The Big One came! I rushed to the phone, and the recorded AT&T message said, “All lines to your area are out of service.” It took me another hour to find out that this was not yet The Big One, and that my family was safe. I will never forget these 60 minutes of my life. Never! Nor will I ever forget the events of the next 60 minutes. After the stress had settled a bit, a delegation from the Russian Space Agency visited our booth. First they expressed their sympathy regarding the earthquake. Then we discussed GPS technology and its similarities with GLONASS. Both systems were fairly new then, although GPS had started first, with a Block I launch in 1978, followed by GLONASS with a launch in 1982. At the time we met in London, GPS was flying 12 satellites, and GLONASS also had 12 in orbit. The Russian delegation visited all GPS manufacturers’ booths in the exhibition hall and then gathered in the coffee area for their private discussions. A few hours before the conference closed, they returned to our booth and said, “We want to combine GPS and GLONASS, and you are our first choice.” Simply put, I was fascinated and excited. After working out visa and travel details, four months later I arrived in Moscow in the cold days of February 1990. It was still the Soviet Union. I had grown up in Iran where the U.S.S.R. was our neighbor to the north. Remembering the global political landscape of my childhood days, I felt both fascination and fear as my airplane landed at Moscow airport. Upon meeting the people who greeted me at the airport, my fears disappeared, and my fascination grew stronger. Our first formal meeting took place in the Institute of Space Device Engineering (ISDE), a division of the Russian Space Agency that was responsible for the GLONASS program. The opening photo shows me with the late Dr. Nikolay Yemelianovich Ivanov, director of the GLONASS program, at that first meeting. I want to focus a bit on the GLONASS team and applaud them for their efforts. What makes the GLONASS team special is that they worked under much harder political and financial conditions than the GPS or Galileo teams. But still they were able to make the project successful. The Soviet Union and later Russia went through huge political, economic, social, and geographical revolutions, but the GLONASS team managed to keep the satellite navigation program alive and successful. Galileo’s management, while enjoying much more stability and financial luxury, can certainly appreciate and understand the significance of what the GLONASS team accomplished. Galileo also benefitted from the European integration of 27 countries, while the Soviet Union disintegrated into 15 separate nations. Despite all their heroic work, individuals on the GLONASS team have received almost no international recognition. At home they went unnoticed, due to their political situations. For example, the highest international recognition that Dr. Ivanov received was that he became a member of the GPS World Advisory Board, which I facilitated. In this article, I want to salute some members that I know and at least keep their names and photos recorded in the GPS World archives. In the first meeting, everyone recognized and emphasized the great potential of combining GPS and GLONASS for a variety of applications. I became more assured of the deep desires of my hosts to make this happen. They had prepared detailed charts and plans, especially for high-precision applications. They also gave me the GLONASS Interface Control Document (ICD) for the first time. We signed a cooperation protocol and agreed to explore technical details in our next meeting, which occurred a few months later. There I began to know Dr. Stanislav “Stas” Ulianovich Sila-Navitsky, at that time the chief scientist of Dr. Ivanov’s team. Later he became my vice president in three companies that I founded. He also became my best friend of 19 years, before he passed away on May 7, 2010. We had several meetings in Moscow and one in Paris in the headquarters of our partner SAGEM. I have wonderful memories of all the meetings. One meeting in Paris included General Leonid Ivanovich Gusev, the head of ISDE. One evening Stas called my hotel room and asked me to cancel our dinner at a famous French restaurant and instead join them for a “real dinner.” Apparently General Gusev was tired of French food! The real dinner took place in the General’s hotel room, and the menu consisted of dark Russian bread, Russian kielbasa sausage, Russian seledka herring, and an abundance of Russian vodka. Our first announcement of combining GPS and GLONASS was published in GPS World magazine, in only its second issue, March/April 1990. That year we had a poster banner in our Institute of Navigation exhibition, showing the American flag and the Soviet flag (hammer and sickle) next to each other. My very good friend, Colonel Gaylord Green, the second director of the GPS Joint Program Office, refused to have his picture taken with me in front of that banner. Instead, we stood over to another side of the booth for his photo. A few months after the Paris meeting, the political process known as perestroika began and caused the Soviet Union to end. Life became extremely difficult for Russians. I called Stas to discuss the situation. We concluded that we had no choice but to continue the plan on our own if we wanted to combine GPS and GLONASS. I went back to Moscow several times, and in February 1992 officially opened the Moscow office of Ashtech. This office is still operational in Moscow with about 10 percent of the original team. It is now in the process of being purchased by Trimble Navigation. What a turn of events! In 1996 we introduced the first combined GPS and GLONASS receiver; the product announcement appeared in GPS World, July 1996 Back home in the United States, the situation was different. Supporting GLONASS was an unpatriotic act. The most prominent figures of GPS teased me for wasting my time with GLONASS. The news favored their arguments: the Russian economy was going downhill. In September 1998, the Russian ruble collapsed more than 300 percent within a week. Banks closed. Even Coca Cola was not able to pay its employees in Russia because of bank closures. Many western companies left Russia. During that period, I intentionally stayed longer times in Moscow and managed to pay our employees without a day of delay. Furthermore, a more than three-fold rate change in favor of the dollar made our employees relatively rich, because their salaries were based on the U.S. dollar. I remained confident that GLONASS would succeed because I had seen the enthusiasm and dedication of GLONASS management and engineers. My Ashtech partners wanted to take the company public to recoup their investments. They thought Wall Street would negatively view GLONASS and the Russian connection. So my aspiration did not match theirs, and I started Javad Positioning System (JPS) in 1996. About 90 percent of the staff engineers followed me to JPS. One of John Scully’s vice presidents did to Ashtech what Scully did to Apple. Meanwhile JPS became very successful, as Apple did when Steve Jobs returned. Subsequent to another event and termination of some obligations and commitments, I started JAVAD GNSS in June 2007. Almost all of the key people followed me again. Our current team has a history of working together for close to 20 years. In JAVAD GNSS we raised the bar of GPS/GLONASS integration to a higher level and focused in two new directions. The first was to eliminate the problem of GLONASS inter-channel biases, which is inherent to the GLONASS frequency-division multiple access (FDMA) signal structure. The second was to support the opinion of GLONASS engineers who were pushing for a new code-division multiple access (CDMA) signal for GLONASS, similar to the GPS signal. We resolved the GLONASS inter-channel biases issue around 2009 and announced, “Our GLONASS is as good as GPS.” On the second front, we worked with the top managements of ISDE and the Information Analysis Center (IAC) of the Russian Space Center to demonstrate the advantages of CDMA for high-precision applications. Some years ago, Stas had confided in me that the issue of CDMA was nothing new, and had been extensively deliberated at all levels of various GLONASS organizations during the early design phase of the system. The result of all these discussions was that engineers and technical people favored CDMA, but the higher management, mostly influenced by the military organizations, held out for FDMA. The reason for favoring FDMA is still a secret, though some believe that they just wanted to be different from GPS and did not see much advantage in CDMA. Some also believed FDMA gave better jamming protection. Of course in those very early days, no one imagined using GPS or GLONASS for high-precision applications, and as such truly there was not much difference between CDMA and FDMA. Much later, the notion of using carrier phase of GPS and GLONASS signals for high-precision applications was discovered, and then the advantages of CDMA became relevant, as Dr. Ivanov also hinted in our first meeting. After we combined GPS and GLONASS, and as a lot of our worldwide users began comparing the two systems, the issue of CDMA versus FDMA again came up for discussion among the GLONASS authorities. More recently, since 2007, we had several meetings in the offices of ISDE in Moscow, in IAC in Korolev (the Russian Space City), and several in our JAVAD GNSS office in Moscow. Most importantly, we had several meetings in my Moscow apartment, enhanced by Russian vodka and the best Armenian cognac, courtesy of Sergey Revnivykh, head of IAC. All meetings were open and candid, discussing and demonstrating the advantages of CDMA, in support of the ISDE engineers who were reluctant to express their opinion above certain levels. I also met with the head of the Russian Space Agency, Dr. Anatoly Nikolayevich Perminov, who personally supported and sponsored me in obtaining an extended Russian residency visa. Let me also express my appreciation for receiving the Medal of Honor from the Russian Cosmonauts Federation, along with the official astronaut watch. I don’t understand the reason for receiving a Kalashnikov AK-47 semi-automatic rifle from ISDE for my birthday. I wonder how I can transport it home! General Anatoly Shilov (deputy director of the Russian Space Center), Dr. Vicheslav Dvorkin (GLONASS deputy general designer), Sergey Revnivykh, Viktor Kosenko (first deputy of chief GLONASS designer) and Sergey Karutin (GLONASS senior scientist) are the new generation of GLONASS leaders who deserve credit for supporting CDMA on GLONASS. Recently, a new GLONASS-K sat-ellite was launched, transmitting an experimental CDMA signal in addition to the legacy signals. Almost immediately, we announced tracking of the new GLONASS-K satellite and its new L3 signal details, hours after it started transmitting. See GPS World archives and our website for details of this signal which seems, in all aspects, as good as GPS. Another new issue of significant international concern was a new frequency for GLONASS. This issue was more political than technical, and is discussed under the umbrella of interoperability. In the early days of my frequent travels to Russia, the KGB probably suspected that I was a CIA agent — and the CIA probably suspected that I was a KGB agent! I would not be surprised if both the CIA and KGB monitored every bit of my travels and activities. After some years, the San Francisco airport authorities stopped interrogating me for my activities in Russia any time I came back home. Perhaps because of their deep investigations, I earned the trust and friendship of both sides, and their confidence that I had nothing in mind other than helping to integrate GPS and GLONASS. I was an unofficial member and friend of both U.S. and Russian delegations during the so-called interoperability discussions since 2007, which sometimes touched on the CDMA issue as well. Some of the most fruitful and friendly discussions between the U.S. and Russian delegations occurred in my apartment in Moscow, after their official meetings. Ken Hodgkins of U.S. State Department; Mike Shaw, director of the National Space-Based Positioning, Navigation, and Timing Coordination Office; David Turner, director of the Center for Space Policy & Strategy; Scott Feairheller of the U.S. Air Force; and Tom Stansell, consultant to the GPS Wing were some of my honored guests. The new GLONASS frequency discussions are still in progress, and I am proud to host and support both sides the best that I can. Sometimes it is fun to observe that discussions resemble poker games where hands are known to all sides, but players still try to bluff each other! Let’s leave it at that for now. In May of this year, I had a conversation with General Anatoly Shilov, now second-in-command of the Russian Space Agency, reporting to the first deputy of the minister of defense, General Vladimir Popovkin, who recently replaced Dr. Perminov as head of the Russian Space Center. This is an indication of increased attention and support from the Russian government to its GLONASS program. In our conversation, General Shilov was enthusiastic and optimistic that the GLONASS program will move forward faster. GLONASS has proven to be a real and reliable complement to GPS. If it were not for the failure of the launch of three GLONASS satellites in December 2010, its constellation would be complete and fully, globally operational today. It will happen soon. Sergey Revnivykh estimates that currently the system has 99.8 percent global coverage. Today, a truly reliable and fast RTK is not possible without combining GPS and GLONASS satellites. The most recent testimony to the success of GLONASS comes from the long-time GLONASS opponents who once criticized me for supporting the system. Recently they had to pay a lot of money to acquire the first company that I founded in Moscow, which they believed would never survive. This year at JAVAD GNSS, I and most of my original employees and GLONASS designers are celebrating our 20th year in Russia, and we are working harder to make the integration of GPS and GLONASS even better. On May 7, 2010, Stas lost to leukemia. He was not present to witness the successful introduction of our TRIUMPH-VS receivers. My refrigerators in Moscow are full of medicines that he brought for me any time I had a little cold. I miss him a lot, and our team is dedicated to following the path that Stas loved so much. I want to briefly summarize the current status and the future of GPS and GLONASS from the users’ point of view. GLONASS now has 24 satellites transmitting FDMA signals in two frequency bands. The failure in the last launch to deploy three more satellites delayed completion of the constellation to the end of 2011. The good thing about GLONASS is that both of its L1 and L2 signals are not encrypted and give better data than GPS P1 and P2 that are encrypted. GLONASS is considering a plan to add CDMA signals to all satellites and not suffer from inter-channel biases. But it will take about 10 years for this plan to become complete for public use, even if the plan is approved and followed. At JAVAD GNSS, we have already mitigated the effect of GLONASS inter-channel biases to the accuracy of better than 0.2 millimeters. We made GLONASS FDMA the same as GPS CDMA by adding some innovations (patent pending) and enhanced algorithms. The GPS plan is to add a third frequency signal (called L5) and add an unencrypted signal in L2. But it will take several years to have enough new satellites transmitting these new signals to make them usable for daily work. In the near term, we have two complete systems, consisting of about 30 GPS and 27 GLONASS satellites. The current non-encrypted GLONASS signals give it an edge over the current GPS encrypted signals, given the fact that we have mitigated the GLONASS FDMA inter-channel biases. GLONASS is also enhancing its control segment to better monitor GLONASS satellites and improve the system’s clock and orbit parameters. Most of these errors are cancelled in differential and high-precision applications anyway. Existence of two complete and free systems, GPS and GLONASS, will place some doubt on the future of Galileo, as it will be extremely difficult for Galileo to hope to collect money from users to fund itself. The addition of Galileo, as a third system, will not really add much benefit for users anyway. The only push for deploying Galileo must come from some European military organizations to support their specific interest. I have been extremely fortunate also to have had the opportunity to work on GPS from its early days, co-pioneering high-precision applications at Trimble Navigation. I owe a lot to Charlie Trimble, who helped me to lift myself up when I sought refuge in the United States in 1981. He taught me GPS as well as dedication in business. I also benefitted from Sunday meetings with Dr. Bradford Parkinson, the first program director of GPS, who was and still is a board member of Trimble Navigation. I am curious to find out how Brad, as a board member, voted in the recent matter of the purchase of Ashtech. Since leaving Trimble, my innovative products at Ashtech, JPS, and JAVAD GNSS have been well documented through the years in GPS World. My emphasis on GLONASS in this memoir is only to record some histories and recognize GLONASS and some of its pioneers who were often overlooked. GPS is already a well-known, well-established system and is the backbone of GNSS. As a final note, let me add that our current JAVAD GNSS products have the option of tracking all current and future signals of GPS, GLONASS, QZSS, and Galileo. Yes, Galileo too!
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Smartcharger sch-401 ac adapter 18.5vdc 3.5a 1.7x4mm -(+) 100-24,samsung skp0501000p usb ac dc adapter for mp3 ya-ad200,4.6v 1a ac adapter used car charger for nintendo 3ds 12v,kodak k620 value charger for aa and aaa size batteries.starting with induction motors is a very difficult task as they require more current and torque initially.ktec ksaa0500080w1eu ac adapter 5vdc 0.8a used -(+)- 1.5 x 3.5 x.sylvan fiberoptics 16u0 ac adapter 7.5vdc 300ma used 2.5x5.5mm.ault a0377511 ac adapter 24v 16va direct plugin class2 trans pow.some people are actually going to extremes to retaliate.eleker ac car adapter phone charger 4-10vdc used 11-26v,motorola plm4681a ac adapter 4vdc 350ma used -(+) 0.5x3.2x7.6mm,konica minolta a-10 ac-a10 ac adapter 9vdc 700ma -(+) 2x5.5mm 23,sl waber ds2 ac adapter 15a used transiet voltage surge suppress,an antenna radiates the jamming signal to space,tec b-211-chg-qq ac adapter 8.4vdc 1.8a battery charger,netcom dv-9100 ac adapter 9vdc 100ma used -(+) 2.5x5.5mm straigh,energy is transferred from the transmitter to the receiver using the mutual inductance principle,jvc ap-v3u ac adapter 5.2vdc 2a -(+) 1.6x4mm used camera a.casio ad-1us ac adapter 7.5vdc 600ma used +(-) 2x5.5x9.4mm round,single frequency monitoring and jamming (up to 96 frequencies simultaneously) friendly frequencies forbidden for jamming (up to 96)jammer sources,its versatile possibilities paralyse the transmission between the cellular base station and the cellular phone or any other portable phone within these frequency bands,toshiba pa3673e-1ac3 ac adapter 19v dc 12.2a 4 pin power supply,new bright a541500022 ac adapter 24vdc 600ma 30w charger power s. Ultra energy 1018w12u2 ac adapter 12vdc 1.5a used -(+) 3x5.5mm r.aspro c39280-z4-c477 ac adapter 9.5vac 300ma power supply class2.bti veg90a-190a universal ac adapter 15-20v 5.33a 90w laptop pow,control electrical devices from your android phone.sceptre power amdd-30240-1000 ac adapter 24vdc 1a used -(+) 2x5.,replacement dc359a ac adapter 18.5v 3.5a used 2.3x5.5x10.1mm,healthometer 4676 ac adapter 6vdc 260ma used 2.5x5.5mm -(+) 120v,asus pa-1650-02 ac adapter 19vdc 3.42a 65w used -(+)- 2.5x5.4mm,sanyo s005cc0750050 ac adapter 7.5vdc 500ma used -(+) 2x5.5x12mm.nec pa-1600-01 ac adapter 19v dc 3.16a used 2.8x5.5x10.7mm,ad35-04505 ac dc adapter 4.5v 300ma i.t.e power supply,kec35-3d-0.6 ac adapter 3vdc 200ma 0.6va used -(+)- 1 x 2.2 x 9.,pdf mobile phone signal jammer,dee ven ent dsa-0301-05 5v 3a 3pin power supply,the operating range does not present the same problem as in high mountains.worx c1817a005 powerstation class 2 battery charger 18v used 120,ingenico pswu90-2000 ac adapter 9vdc 2a -(+) 2.5x5.5 socket jack,kramer scp41-120500 ac adapter 12vdc 500ma 5.4va used -(+) 2x5.5,apple h1300 ac adapter 7vdc 0.5a used -(+) 1.5x4.5x9.4mm round b.netmedia std-2421pa ac adapter 24vdc 2.1a used -(+)- 2x5.5mm rou,panasonic cf-aa1526 m3 ac adapter 15.1vdc 2.6a used pscv390101.ultech ut-9092 ac adapter 9vdc 1800ma used -(+) 1.5x4mm 100-240v,for more information about the jammer free device unlimited range then contact me. Ibm 02k6750 ac adapter 16vdc 4.5a -(+) 2.5x5.5mm 100-240vac used,phase sequence checking is very important in the 3 phase supply.with a maximum radius of 40 meters,apple a10003 ipod ac adapter 12vdc 1a used class 2 power supply.ottoman st-c-075-19000395ct ac adapter 19vdc 3.95a used3 x 5.4,stairmaster wp-3 ac adapter 9vdc 1amp used 2.5x5.5mm round barre,edac power ea11001e-120 ac adapter 12vdc 8.33a used -(+) 3x6.5x1.hp pa-1650-32ht ac adapter 18.5v 3.5a ppp009l-e series 65w 60842.sony vgp-ac19v10 ac adapter 19.5vdc 4.7a notebook power supply,ch88a ac adapter 4.5-9.5vdc 800ma power supply,panasonic vsk0964 ac adapter 5vdc 1.6a used 1.5x4x9mm 90° round,eng 3a-122du12 ac adapter 12vdc 1a -(+) 2x5.5mm used power suppl.audiovox cnr-9100 ac adapter 5vdc 750ma power supply.gn netcom bce-gn9120 wireless base amplifire with charger sil ud,energy is transferred from the transmitter to the receiver using the mutual inductance principle,this exception includes all laser jammers,dve dsa-9w-09 fus 090100 ac adapter 9vdc 1a used 1.5x4mm dvd pla,tiger power tg-4201-15v ac adapter 15vdc 3a -(+) 2x5.5mm 45w 100.philishave 4203 030 76580 ac adapter 2.3vdc 100ma new 2 pin fema,qualcomm cxdtc051 ac adapter 8.4dc 1025ma ac power supply.condor a9-1a ac adapter 9vac 1a 2.5x5.5mm ~(~) 1000ma 18w power,this project shows the generation of high dc voltage from the cockcroft –walton multiplier,apple m3365 ac adapter 13.5vdc 1a -(+) 1x3.4x4.8mm tip 120vac 28. Premium power ea1060b ac adapter 18.5v 3.5a compaq laptop power,intermediate frequency(if) section and the radio frequency transmitter module(rft),a prototype circuit was built and then transferred to a permanent circuit vero-board.the program will be monitored to ensure it stays on.65w-dlj004 replacement ac adapter 19.5v 3.34a laptop power suppl,linksys ls120v15ale ac adapter 12vdc 1.5a used -(+) 2x5mm 100-24.lite-on pa-1700-02 ac adapter 19vdc 3.42a used 2x5.5mm 90 degr,dell pa-1470-1 ac adapter 18v 2.6a power supply notebook latitud,aps ad-555-1240 ac adapter 24vdc 2.3a used -(+)- 2.5x5.5mm power.linearity lad1512d52 ac adapter 5vdc 2a used -(+) 1.1x3.5mm roun,posiflex pw-070a-1y20d0 ac power adapter desktop supply 20v 3.5a,infinite ad30-5 ac adapter 5vdc 6a 3pin power supply,apple macintosh m7778 powerbook duo 24v 1.04a battery recharher,all these project ideas would give good knowledge on how to do the projects in the final year.so to avoid this a tripping mechanism is employed,rs rs-1203/0503-s335 ac adapter 12vdc 5vdc 3a 6pin din 9mm 100va,htc psaio5r-050q ac adapter 5v dc 1a switching usb power supply.information technology s008cm0500100 ac adapter 5vdc 1000ma used.eng epa-201d-07 ac adapter 7vdc 2.85a used -(+) 2x5.5x10mm round,phihong psc11r-050 ac adapter +5v dc 2a used 375556-001 1.5x4.li shin lse0107a1240 ac adapter 12vdc 3.33a -(+)- 2x5.5mm 100-24.a&d tb-233 ac adapter 6v dc 500ma used -(+) 2x5.5mm barrel 120va.arduino are used for communication between the pc and the motor. The systems applied today are highly encrypted,ibm 02k6749 ac adapter 16vdc 4.5a -(+) 2.5x5.5mm used 100-240vac,sonigem ad-0001 ac adapter 9vdc 210ma used -(+) cut wire class 2,creative tesa2g-1501700d ac dc adapter 14v 1.7a power supply.hp hstnn-ha01 ac adapter 19vdc 7.1a 135w used 5x7.4mm,apple powerbook m1893 ac adapter 16vdc 1.5a 16v 1a used 4 pin di,ibm 85g6737 ac adapter 16vdc 2.2a -(+) 2.5x5.5mm used power supp,. cell phone & gps jammer devices-cell phone and gps jammers wikiraptor cell phone jammercell phone jammer Brockvilleradar detector cell phone jammervideo cellphone jammer devicevideo cellphone jammer devicevideo cellphone jammer devicevideo cellphone jammer devicevideo cellphone jammer device
Hb hb12b-050200spa ac adapter 5vdc 2000ma used 2.3 x 5.3 x 11.2.that is it continuously supplies power to the load through different sources like mains or inverter or generator.hp ppp017l ac adapter 18.5vdc 6.5a 5x7.4mm 120w pa-1121-12hc 391.shindengen za12002gn ac adapter 12v 2a ite power supply,.
Atlinks 5-2633 ac adapter 5v 400ma used 2x5.5x8.4mm round barrel,battery charger for hitachi dvd cam dz-bx35a dz-acs3 ac new one.plantronics 7501sd-5018a-ul ac adapter 5v 180ma bluetooth charge.jammer disrupting the communication between the phone and the cell phone base station in the tower,navtel car dc adapter 10vdc 750ma power supply for testing times,microsoft 1625 ac adapter 12vdc 2.58a used charger for surface p,hello friends once again welcome here in this advance hacking blog,. www.fincaelrenacer.com
