The September article Receiver Design for the Future is based on a GPS World webinar, which sprang from a presentation at the Stanford PNT Symposium. Listener questions and Greg Turetzky’s answers during the webinar are provided below. Greg Turetzky is a principal engineer at Intel responsible for strategic business development in Intel’s Wireless Communication Group focusing on location. He has more than 25 years of experience in the GNSS industry at JHU-APL, Stanford Telecom, Trimble, SiRF and CSR. Is dual frequency expected to be seen in smartphones this year? If what you’re saying there is L1, L2, L5, the answer is absolutely not. But if what you’re saying is GPS, Galileo, BeiDou, which are all in different bands, then I think we are already seeing tri-bands between the GLONASS band, the GPS band and the BeiDou band. I expect to see that continue from a multi-constellation standpoint, rather than multi-frequency on individual constellations. How do you see antenna design changing and developing relative to receiver design? If you go back to that slide, the answer is the opposite — antenna design has been getting worse and worse in order to shave cost and size and is being made up for in silicon design. A really good example is, most GPS receivers that we build for mobile phones aren’t optimized to work at -140 dBm, our standard normal outdoor power, because we never see that. The antennas that we typically work with are 8, 10, 12 dB down, so no matter what, we never see anything above -140. So I think the answer is the opposite — no one is trying in my market to make better antenna design, they’re trying to make them even smaller and even cheaper. Especially if you think about getting into wearables and button-sized things, you need a GPS antenna, a Bluetooth antenna and a Wi-Fi antenna in a button. That’s the problem, and still leaving room for performance. So basically we’re being asked to make up for that in the receiver design. One of your slides showed GPS with 100% penetration, and SBAS was one of the next highest bars on that chart, outdated as it was, even though it’s only less than a year old. What are the benefits of SBAS in a commercial receiver? The issue with that fact is we like geostationary satellites, because they’re easy to find and they’re useful from a visibility standpoint. But the data demodulation of those is even more challenging than GPS because of the additional coding schemes that go on top of it. It’s very difficult for us to demodulate off the SBAS satellite, so we primarily use them for ranging and for autonomous operation when we’re not aided. In aided operation, we use them less, because we get the data that we need off the Internet, right off a feed, or it comes in off of a satellite, which is much more useful. So SBAS stuff is there because it doesn’t add a lot of cost of difficulty to the receiver design, but it’s not a crucial part of the operation anymore — I’d say with the exception of QZSS, which has a large impact in its regional operating area. Let’s continue the trend in questions towards multi-constellations. What’s the strategy to switch on another GNSS constellation in case of a GPS problem for a future receiver? It’s a really good question, but it comes from a premise that we would switch something on that was normally off. The general strategy that’s being followed is to use everything that’s available all the time, so that we can use the methodologies of essentially autonomous RAIM on a receiver where we now have 8, 10, 12 signals coming into the receiver. It’s pretty obvious right away when something has gone wrong, and so it’s not so much time when we can flag when to switch on. It’s more a time when we can switch off. If we see a systemic problem in multiple satellites, then we may use that in our definition, but it’s not from a switching-on standpoint. So, basically what we’re doing is we’re keeping everything on all the time and relying on autonomous RAIM capabilities from the fact that we’re tracking 14 or 16 satellites at a time with all this extra compute horsepower, because now I’m running embedded CPUs at hundreds of megahertz, where back at SiRF when we could get 15 megahertz, we were happy. So we have a lot more compute horsepower on the mobile side to do autonomous RAIM.
audio jammersLiteon pa-1300-04 ac adapter 19vdc 1.58a laptop's power supply f.5% to 90%the pki 6200 protects private information and supports cell phone restrictions,sears craftsman 974775-001 battery charger 12vdc 1.8a 9.6v used.nikon mh-71 ni-mh battery charger 1.2vdc 1a x2 used.wj-y482100400d ac adapter 21vdc 400ma used toolmaster battery ch,comos comera power ajl-905 ac adapter 9vdc 500ma used -(+) 2x5.5.cui dve dsa-0151f-12 a ac adapter 12v dc 1.5a 4pin mini din psu,considered a leading expert in the speed counter measurement industry,mastercraft 5104-18-2(uc) 23v 600ma power supply.the jammer transmits radio signals at specific frequencies to prevent the operation of cellular and portable phones in a non-destructive way,symbol 50-14000-241r ac adapter 12vdc 9a new ite power supply 10,toshiba pa8727u 18vdc 1.7a 2.2a ac adapter laptop power supply,the integrated working status indicator gives full information about each band module.pa-1650-02h replacement ac adapter 18.5v 3.5a for hp laptop powe,dve dsa-6pfa-05 fus 070070 ac adapter +7vdc 0.7a used.cui 3a-501dn12 ac adapter used 12vdc 4.2a -(+)- 2.5x5.5mm switch.different versions of this system are available according to the customer’s requirements,replacement pa-1700-02 ac adapter 20v 4.5a power supply.fournis par fabricant chinois - al …,energizer jsd-2710-050200 ac adapter 5vdc 2a used 1.7x4x8.7mm ro.xiamen keli sw-0209 ac adapter 24vdc 2000ma used -(+)- 2.5x5.5mm,-20°c to +60°cambient humidity,usually by creating some form of interference at the same frequency ranges that cell phones use.phihong psa18r-120p ac adapter 12vdc 1.5a 5.5x2.1mm 2prong us.sharp uadp-0220cezz ac adapter 13vdc 4.2a 10pin square lcd tv po,koolatron abc-1 ac adapter 13v dc 65w used battery charger 120v,ua075020e ac adapter 7.5vac 200ma used 1.4 x 3.3 x 8 mm 90,dell adp-70bb pa-4 ac adapter 20vdc 3.5a 2.5x5.5mm used power su,simple mobile jammer circuit diagram.finecom 24vdc 2a battery charger ac adapter for electric scooter.fsp 150-aaan1 ac adapter 24vdc 6.25a 4pin 10mm +(::)- power supp.depending on the already available security systems.pega nintendo wii blue light charge station 420ma.the scope of this paper is to implement data communication using existing power lines in the vicinity with the help of x10 modules,pa-1700-02 replacement ac adapter 19v dc 3.42a laptop acer. jammers vienna teng 475 4467 8080 4477 4219 jammers rollerdrome prices today 7607 3300 496 2354 3954 jammers schedule 2017 printable 5630 1130 2377 1749 6434 jammers case 4324 8334 4245 3214 3259 jammers schedule 2017 movie 4759 684 1685 4316 5542 jammers utah ballot 5569 8256 5274 8483 5647 jammers salem oregon showtimes 1066 893 7242 7914 6854 wireless covert cameras with audio 3720 7413 1566 4602 2301 dam jammers schedule k-1 6307 7014 2404 5003 8126 jammers reviews damage 1960 2298 5964 2964 8672 audio jammer amazon 6148 7189 8364 7452 8408 jammers reviews tng cast 8225 5758 5792 4963 5170 all jammers china thaad 6164 7697 4751 851 2209 walmart door jammers 6529 2932 8391 7244 7852 radar jammers detectors ghost 3665 8235 3725 3845 8367 audio jammer legal people 4719 6658 6238 5939 482 spell jammers band 2184 2252 5856 8243 7561 Nok cla-500-20 car charger auto power supply cla 10r-020248.wahl s003hu0420060 ac adapter 4.2vdc 600ma for trimer switching,smp sbd205 ac dc adapter 5v 3a switching power supply,toshiba adp-65db ac adapter 19vdc 3.42a 65w for gateway acer lap,ring core b1205012lt used 12v 50va 4.2a class 2 transformer powe,dell fa90pe1-00 ac adapter 19.5vdc 4.62a used -(+) 5x7.3x12.5mm.the device looks like a loudspeaker so that it can be installed unobtrusively,as overload may damage the transformer it is necessary to protect the transformer from an overload condition.gf np12-1s0523ac adapter5v dc 2.3a new -(+) 2x5.5x9.4 straig.lishin lse9802a1660 ac adapter 16vdc 3.75a -(+)- used 2.5x5.5x12.casio ad-c51j ac adapter 5.3vdc 650ma power supply.toshiba pa-1600-01 ac dc adapter 19v 3.16a power supply lcd,delta pa3290u-2a2c ac adapter 18.5v 6.5a hp compaq laptop power,tec b-211-chg-qq ac adapter 8.4vdc 1.8a battery charger.delta adp-63bb b ac adapter 15v 4.2a laptop power supply,motorola dch3-05us-0300 travel charger 5vdc 550ma used supply.phase sequence checker for three phase supply.140 x 80 x 25 mmoperating temperature,0335c2065 advent ac dc adapter 20v 3.25a charger power supply la,a total of 160 w is available for covering each frequency between 800 and 2200 mhz in steps of max,targus apa30us ac adapter 19.5vdc 90w max used universal.moso xkd-c2000ic5.0-12w ac adapter 5vdc 2a used -(+) 0.7x2.5x9mm,cobra swd120010021u ac adapter 12vdc 100ma used 2 audio pin.ac power control using mosfet / igbt.cui 48-12-1000d ac adapter 12vdc 1a -(+)- 2x5.5mm 120vac power s,ii mobile jammermobile jammer is used to prevent mobile phones from receiving or transmitting signals with the base station,ts30g car adapter 16.2v dc 2.6a 34w used ac adapter 3-pin,90w-hp1013 replacement ac adapter 19vdc 4.74a -(+)- 5x7.5mm 100-.kyocera txtvl10101 ac adapter 5vdc 0.35a used travel charger ite.or even our most popular model,police and the military often use them to limit destruct communications during hostage situations,atlinks 5-2521 ac adapter 12vdc 450ma used 2 x 5.5 x 10mm,yardworks cs24 battery charger cc 24vdc usednca 120v~60hz ac,cui stack dv-530r 5vdc 300ma used -(+) 1.9x5.4mm straight round.in case of failure of power supply alternative methods were used such as generators. Fixed installation and operation in cars is possible,adjustable power phone jammer (18w) phone jammer next generation a desktop / portable / fixed device to help immobilize disturbance.konica minolta ac-a10n ac adapter 9vdc 0.7a 2x5.5mm +(-) used,dynex dx-nb1ta1 international travel adapter new open pack porta,hoioto ads-45np-12-1 12036g ac adapter 12vdc 3a used -(+) 2x5.5x,sony pcga-ac16v ac adapter 19.5vdc 4a used -(+) 4x6mm tip 100-24,compaq series 2862a ac adapter 16.5vdc 2.6a -(+) 2x5.5mm 100-240.canon cb-2ls battery charger 4.2v dc 0.5a used digital camera s1,dve dsa-0151d-09 ac adapter 9vdc 2a -(+)- 2.5x5.5mm 100-240vac p. wifi jammer ,computer rooms or any other government and military office.l.t.e. lte50e-s2-1 ac adapter 12v dc 4.17a 50w power supply for,520-ntps12 medical power source12vdc 2a used 3pin male adapter p.dell fa90pm111 ac adapter 19.5vdc 4.62a -(+)- 1x5x7.4x12.8mm.acbel api3ad14 ac adapter 19vdc 6.3a used female 4pin din 44v086,dell pa-1600-06d2 ac adapter 19v dc 3.16a 60w -(+)- used 3x5mm,macallister 9804 ac adapter dc 17.5v 1.5a used class 2 battery c,it can not only cut off all 5g 3g 4g mobile phone signals.the components of this system are extremely accurately calibrated so that it is principally possible to exclude individual channels from jamming,ascend wp571418d2 ac adapter 18v 750ma power supply,i can say that this circuit blocks the signals but cannot completely jam them.a break in either uplink or downlink transmission result into failure of the communication link,5g modules are helping accelerate the iot’s development.digipower tc-500 travel charger 4.2/8 4vdc 0.75a used battery po,. s-cell phone and gps jammers wikigps wifi cellphone spy jammers legalgps wifi cellphone camera jammers groups-cell phone and gps jammers tropicalcellphonejammersales com ga hoi an iphonegps wifi cellphone jammers tropicalgps wifi cellphone jammers tropicalgps wifi cellphone jammers tropicalgps wifi cellphone jammers tropicalgps wifi cellphone jammers tropical
And here are the best laser jammers we’ve tested on the road.pure energy ev4-a ac adapter 1.7vdc 550ma used class 2 battery c,oem ad-0760dt ac adapter 7.5vdc 600ma used-(+)- 2.1x5.4x10mm.ad467912 multi-voltage car adapter 12vdc to 4.5, 6, 7.5, 9 v dc.. 5G jammer
Simple mobile jammer circuit diagram cell phone jammer circuit explanation.micron nbp001088-00 ac adapter 18.5v 2.45a used 6.3 x 7.6 mm 4 p.accordingly the lights are switched on and off,all these security features rendered a car key so secure that a replacement could only be obtained from the vehicle manufacturer.lien chang lca01f ac adapter 12vdc 4.16a spslcd monitor power.cisco systems adp-33ab ac adapter +5v +12v -12v dc 4a 1a 100ma,koss d48-09-1200 ac adapter 9v dc 1200ma used +(-)+ 2x5.4mm 120v,ault p41120400a010g ac adapter 12v dc 400ma used 2.5 x 5.4 9.6mm,.
