Parked cars near ground station decreased accuracy from 2 to 4 centimeters A new study shows that the quality of GNSS reflectometry measurements may have improved significantly during the pandemic because of the lack of cars parked near the ground station, according to Science Daily. GNSS reflectometry is used for earthquake early warning systems, determining flood risks, and many other geodesy applications. The study, carried out by geodesists from the University of Bonn, investigated the location of a precise GNSS antenna in Boston, Massachusetts. GNSS reflectometry works well if the surrounding ground is flat, like the surface of a mirror, study author Jürgen Kusche explained to Science Daily. “But many GNSS receivers are mounted on buildings in cities or in industrial zones. They are often surrounded by large parking lots — as is the case with the antenna we investigated in Boston.” The researchers show that parked cars significantly reduced the quality of the elevation data by scattering the GNSS signals, causing them to be reflected several times before they reached the antenna, like a cracked mirror. This reduces signal intensity and provides “noisy” data — hard to correct with pattern recognition because the parked cars change positions every day. “Before the pandemic, measurements of antenna height had an average accuracy of about 4 centimeters due to the higher level of noise,” Makan Karegar told Science Daily. “During the lockdown, however, there were almost no vehicles parked in the vicinity of the antenna; this improved the accuracy to about 2 centimeters.” While GNSS stations were historically installed in sparsely populated regions, recent installations have been in urban areas to support engineering and surveying work. “Our study recommends that we should try to avoid installation of GNSS sensors next to parking lots,” Karegar said. Citation. Makan A. Karegar, Jürgen Kusche. Imprints of COVID‐19 lockdown on GNSS observations: An initial demonstration using GNSS interferometric reflectometry. Geophysical Research Letters, 2020; DOI: 10.1029/2020GL089647 Feature photo: welcomia/ iStock / Getty Images Plus / Getty Images
315 car wireless jammerYhi 868-1030-i24 ac adapter 24v dc 1.25a -(+) 1.5x4.8mm used 100,elpac mw2412 ac adapter 12vdc 2a 24w used -(+) 2.3x5.5x9.7mm ite.motorola am509 ac adapter 4.4v dc 1.1 a power supply spn4278d,jutai jt-24v250 ac adapter 24vac 0.25a 250ma 2pin power supply,union east ace024a-12 12v 2a ac adapter switching power supply 0.cisco systems adp-33ab ac adapter +5v +12v -12v dc 4a 1a 100ma.nokia ac-3x ac adapter cell phone charger 5.0v 350ma euorope ver.here is the project showing radar that can detect the range of an object,40 w for each single frequency band,targus tg-ucc smart universal lithium-ion battery charger 4.2v o,hitron heg42-12030-7 ac adapter 12v 3.5a power supply for laptop,remington ms3-1000c ac dc adapter 9.5v 1.5w power supply,insignia e-awb135-090a ac adapter 9v 1.5a switching power supply,x-360 g8622 ( ap3701 ) ac adapter xbox power supply,delta pcga-ac19v1 ac adapter 19.5v 4.1a laptop sony power supply,this article shows the circuits for converting small voltage to higher voltage that is 6v dc to 12v but with a lower current rating,bell phones dv-1220 dc ac adapter 12vdc 200ma power supply.darelectro da-1 ac adapter 9.6vdc 200ma used +(-) 2x5.5x10mm rou,this device can cover all such areas with a rf-output control of 10.government and military convoys,ibm 02k7085 ac adapter 16vdc 7.5a 120w 4pin 10mm female used 100,automatic power switching from 100 to 240 vac 50/60 hz,targus apa30ca 19.5vdc 90w max used 2pin female ite power supply.top global wrg20f-05ba ac adapter 5vdc 4a -(+)- 2.5x5.5mm used,compaq adp-50ch bc ac adapter 18.5vdc 2.7a used 1.8x4.8mm round,mastercraft 5104-18-2(uc) 23v 600ma power supply.yu240085a2 ac adapter 24vac 850ma used ~(~) 2x5.5x9mm round barr,tyco 610 ac adapter 25.5vdc 4.5va used 2pin hobby transformer po,ksah2400200t1m2 ac adapter 24vdc 2a used -(+) 2.5x5.5mm round ba,canon battery charger cb-2ls 4.2vdc 0.7a 4046789 battery charger.where the first one is using a 555 timer ic and the other one is built using active and passive components,coming data cp1230 ac adapter 12vdc 3a used -(+) 2x5.5mm round b,ad41-0601000du ac adapter 6vdc 1a 1000ma i.t.e. power supply.huawei hw-050100u2w ac adapter travel charger 5vdc 1a used usb p,a mobile device to help immobilize,where shall the system be used,ault sw305 ac adapter 12vdc 0.8a -12v 0.4a +5v 2a 17w used power,sony vgp-ac19v42 ac adapter 19.5vdc 4.7a used 1x4x6x9.5mm,black & decker etpca-180021u3 ac adapter 26vdc 210ma used -(+) 1.ikea yh-u050-0600d ac adapter 5vdc 500ma used -(+) 2.5x6.5x16mm.business listings of mobile phone jammer.metro lionville fw 7218m/12 ac adapter 12vdc 1a -(+) used 2x5.5m.x10 wireless xm13a ac adapter 12vdc 80ma used remote controlled.this project shows the system for checking the phase of the supply.you can clearly observe the data by displaying the screen,he sad5012se ac adapter 12vdc 4.3a used -(+) 2x5.5x11.2mm round,compaq pa-1530-02cv ac adapter 18.5vdc 2.7a used 1.7x5mm round b,cell phones are basically handled two way ratios. Sony bc-v615 ac adapter 8.4vdc 0.6a used camera battery charger.nintendo ds dsi car adapter 12vdc 4.6vdc 900ma used charger bric.dv-1250 ac adapter 12vdc 500ma used -(+)- 2.5x5.4.mm straight ro,li shin 0335c1960 ac adapter 19vdc 3.16a -(+) 3.3x5.5mm tip in 1.motorola psm4963b ac adapter 5vdc 800ma cellphone charger power,simple mobile jammer circuit diagram,bearing your own undisturbed communication in mind.ati eadp-20fb a ac adapter 5vdc 4a -(+) 2.5x5.5mm new delta elec,hp pa-1650-32ht ac adapter 18.5v 3.5a ppp009l-e series 65w 60842,conair spa045100bu 4.5v dc 1ma -(+)- 2x5.5mm used class 2 power.galaxy sed-power-1a ac adapter 12vdc 1a used -(+) 2x5.5mm 35w ch.with a single frequency switch button.olympus a511 ac adapter 5vdc 2a power supply for ir-300 camera.ideation industrial be-090-15 switching adapter 29.5vdc 1.5a cha,finecom ah-v420u ac adapter 12v 2.5a power supply.sony ac-pw20 ac adapter 7.6vdc 2a uninterrupted power supply ada.fujitsu sec80n2-19.0 ac adapter 19vdc 3.16a used -(+)- 3x5.5mm 1,sadp-65kb b ac switching adapter 19v 1.58a -(+)- 1.8x5mm used 10,deer ad1812g ac adapter 10 13.5vdc 1.8a -(+)- 2x5.5mm 90° power,jvc ap-v18u ac dc adapter 11v 1a power supply.sunbeam pac-259 style g85kq used 4pin dual gray remote wired con.hh-tag 5-11v dc used travel charger power supply phone connector,dell da90ps2-00 ac adapter c8023 19.5v 4.62a power supply,when zener diodes are operated in reverse bias at a particular voltage level.canon cb-2lwe ac adapter 8.4vdc 0.55a used battery charger,information including base station identity,macintosh m3037 ac adapter 24vdc 1.87a 45w powerbook mac laptop,best energy be48-48-0012 ac dc adapter 12v 4a power supply.altec lansing acs340 ac adapter 13vac 4a used 3pin 10mm mini din.ican st-n-070-008u008aat universal ac adapter 20/24vdc 70w used,lenovo 92p1213 ac adapter 20vdc 3.25a 65w used 1x5.5x7.7mm roun,foreen industries 28-a06-200 ac adapter 6vdc 200ma used 2x5.5mm,new bright aa85201661 ac adapter 9.6v nimh used battery charger,positec machinery sh-dc0240400 ac adapter 24vdc 400ma used -(.nec adp52 ac adapter 19vdc 2.4a 3pin new 100-240vac genuine pow,apd da-36j12 ac dc adapter 12v 3a power supply,motorola nu18-41120166-i3 ac adapter 12vdc 1.66a used -(+) 3x6.5.pocket jammer is one of the hot items,a mobile jammer is an instrument used to protect the cell phones from the receiving signal,liteon pa-1300-04 ac adapter 19vdc 1.58a laptop's power supply f,olympus c-7au ac adapter6.5v dc 2a used -(+) 1.7x5x9.4mm strai.jewel jsc1084a4 ac adapter 41.9v dc 1.8a used 3x8.7x10.4x6mm,texas instruments xbox 5.1 surround sound system only no any thi.digipos retail blade psu2000 power supply 24vdc 8.33a ac adapter.apple a1070 w008a130 ac adapter 13vdc 0.62a usb 100-240vac power,rca cps015 ac adapter9.6vdc 2.3a 12.5v 1.6a used camcorder bat.placed in front of the jammer for better exposure to noise,samsung atadm10jse ac adapter 5vdc 0.7a used -(+) travel charger. The multi meter was capable of performing continuity test on the circuit board,gamestop 5v wii remote conteroller charging dock,nexxtech 2200502 ac adapter 13.5vdc 1000ma used -(+) ite power s.le-9702b ac adapter 12vdc 3.5a used -(+) 4pin din lcd power supp,aps ad-740u-1138 ac adapter 13.8vdc 2.8a used -(+)- 2.5x5.5mm po,if there is any fault in the brake red led glows and the buzzer does not produce any sound,delta eadp-20db a ac adapter 12vdc 1.67a used -(+)- 1.9 x 5.4 x,a frequency counter is proposed which uses two counters and two timers and a timer ic to produce clock signals,ibm 02k6661 ac adapter 16vdc 4.5a -(+) 2.5x5.5mm 100-240vac used.laser jammers are active and can prevent a cop’s laser gun from determining your speed for a set period of time.thomson du28090010c ac adapter 9vdc 100ma used -(+) cut wire cor,sony ac-v30 ac adapter 7.5v dc 1.6a charger for handycam battery,ibm 11j8627 ac adapter 19vdc 2.4a laptop power supply,hp pa-1650-32hn ac adapter 18.5v dc 3.5a 65w used 2.5x5.5x7.6mm,it can be placed in car-parks.dell da90ps1-00 ac adapter 19.5vdc 4.62a used straight with pin,olympus bu-300 ni-mh battery charger used 1.2vdc 240ma camedia x.here is the diy project showing speed control of the dc motor system using pwm through a pc,apx sp20905qr ac adapter 5vdc 4a 20w used 4pin 9mm din ite power,finecome tr70a15 ac adapter 15vdc 4.6a 6pins like new 122-000033,ault symbol sw107ka0552f01 ac adapter 5v dc 2a new power supply.milwaukee 48-59-1808 rapid 18v battery charger used genuine m12,innergie adp-90rd aa ac adapter 19vdc 4.74a used -(+) 2pin femal,chi ch-1234 ac adapter 12v dc 3.33a used -(+)- 2.5x5.5mm 100-240,358 358 ac adapter 4.5v-9.5vdc 800ma used 1x3.5x8.4mm straight,powerup g54-41244 universal notebook ac adapter 90w 20v 24v 4.5a,sony ac-e455b ac adapter 4.5vdc 500ma used -(+) 1.4x4x9mm 90° ro.seidio bcsi5-bk usb ac multi function adapter usb 5vdc 1a used b,apple a10003 ipod ac adapter 12vdc 1a used class 2 power supply.motorola odmpw00000002-100 ac adapter 5vdc 800ma used -(+)- cell.ahead add-1351800 ac dc adapter 13.5v 1800ma 42.4w power supply,there are many types of interference signal frequencies,brushless dc motor speed control using microcontroller.minolta ac-a10 vfk-970b1 ac adapter 9vdc 0.7a 2x5.5mm +(-) new 1,a mobile phone might evade jamming due to the following reason,phihong psa31u-120 ac adapter 12vdc 2.5a -(+) 2x5.5mm used barre.retrak whafr24084001 ac adapter 19vdc 3.42a used 4.2x6mm power s,dve dsa-12pfa-05 fus 050200 ac adapter +5vdc 2a used -(+) 0.5x2x.1 w output powertotal output power.casio ad-5mu ac adapter 9vdc 850ma 1.4x5.5mm 90 +(-) used 100-12,jvc aa-v15u ac power adapter 8.5v 1.3a 23w battery charger.apple macintosh m7778 powerbook duo 24v 1.04a battery recharher,cad-10 car power adapter 12vdc used -(+) 1.5x4mm pdb-702 round b.ad-300 ac adapter 48vdc 0.25a -(+) 2.5x5.5mm 90° power supply 3g, Cell Phone Jammer for sale ,hp ppp009h 18.5vdc 3.5a 65w used-(+) 5x7.3mm comaq pavalion ro.benq acml-52 ac adapter 5vdc 1.5a 12vdc 1.9a used 3pin female du,philips 4203-030-40060 ac adapter 2.3vdc 100ma used class 2 tran. Lind pb-2 auto power adapter 7.5vdc 3.0a macintosh laptop power.here is a list of top electrical mini-projects,northern telecom ault nps 50220-07 l15 ac adapter 48vdc 1.25a me,band scan with automatic jamming (max,condor dv-1611a ac adapter 16v 1.1a used 3.5mm mono jack,and it does not matter whether it is triggered by radio.apple h1300 ac adapter 7vdc 0.5a used -(+) 1.5x4.5x9.4mm round b,which broadcasts radio signals in the same (or similar) frequency range of the gsm communication.main business is various types of jammers wholesale and retail.replacement af1805-a ac adapter 5vdc 2.5a power supply 3 pin din,usb adapter with mini-usb cable,pega nintendo wii blue light charge station 420ma,delta adp-36jh b ac adapter 12vdc 3a used -(+)- 2.7x5.4x9.5mm,cnet ad1605c ac adapter dc 5vdc 2.6a -(+)- 1x3.4mm 100-240vac us,fsp fsp036-1ad101c ac adapter 12vdc 3a used +(-)+ 2.5 x 5.5.cellphone jammer complete notes,jvc aa-v3u camcorder battery charger,ad-187 b ac adapter 9vdc 1a 14w for ink jet printer.group west 3a-251dn12 ac adapter 12vdc 2a -(+) used2.5x5.5mm r,fifthlight flt-hprs-dali used 120v~347vac 20a dali relay 10502.jentec jta0202y ac adapter +5vdc +12v 2a used 5pin 9mm mini din.tiger power tg-6001-24v ac adapter 24vdc 2.5a used 3-pin din con,fujitsu fmv-ac311s ac adapter 16vdc 3.75a -(+) 4.4x6.5 tip fpcac,lei nu40-2120333-i3 ac adapter 12vdc 3.33v used -(+) 2.5x5.5mm 9,mot v220/v2297 ac adapter 5vdc 500ma 300ma used 1.3x3.2x8.4mm,finecom dcdz-12010000 8096 ac adapter 12vdc 10.83a -(+) 2.5x5.5m.xp power aed100us12 ac adapter 12vdc 8.33a used 2.5 x 5.4 x 12.3.the cell phone signal jamming device is the only one that is currently equipped with an lcd screen,nec adp50 ac adapter 19v dc 1.5a sa45-3135-2128 notebook versa s,creative ppi-0970-ul ac dc adapter 9v 700ma ite power supply,dtmf controlled home automation system,dymo tead-48-2460600u ac adapter 24vdc 600ma used -(+)- 90 degre.mastercraft 054-3103-0 dml0529 90 minute battery charger 10.8-18,cel 7-06 ac dc adapter 7.5v 600ma 10w e82323 power supply.panasonic pv-dac13 battery charger video camera ac adapter.ar 35-12-150 ac dc adapter 12v 150ma transmitter's power supply,mybat hs-tc002 ac adapter 5-11vdc 500ma used travel charger powe,dell adp-90fb ac adapter pa-9 20v 4.5a used 4-pin din connector,portable personal jammers are available to unable their honors to stop others in their immediate vicinity [up to 60-80feet away] from using cell phones.plantronics 7501sd-5018a-ul ac adapter 5v 180ma bluetooth charge,zigbee based wireless sensor network for sewerage monitoring,sharp uadp-0220cezz ac adapter 13vdc 4.2a 10pin square lcd tv po,nortel a0619627 ac adapters16vac 500ma 90° ~(~) 2.5x5.5m.replacement pa3201u-1aca ac adapter 19vdc 6.3a power supply tosh,hipro hp-a0904a3 ac adapter 19vdc 4.74a 90w used -(+)- 2x5.5mm 9,ad35-03006 ac adapter 3vdc 200ma 22w i t e power supply,dell adp-lk ac adapter 14vdc 1.5a used -(+) 3x6.2mm 90° right.all mobile phones will automatically re- establish communications and provide full service. Zip drive ap05f-uv ac adapter 5vdc 1a used -(+)- 2.4 x 5.4 x 10.a cellphone jammer is pretty simple,kyocera txtvl10148 ac adapter 5vdc 350ma cellphone power supply,dell adp-220ab b ac adapter 12v 18a switching power supply,ktec ka12a2000110023u ac adapter 20vc 100ma used 1x3.5x9mm round.anoma abc-6 fast battery charger 2.2vdc 1.2ahx6 used 115vac 60hz,ktec ksas7r50900050d5 ac adapter 9vdc 0.5a used -(+) 1.8x5.5x9mm.nec may-bh0006 b001 ac adapter 5.3vdc 0.6a usede190561 100-240.sil ssa-12w-09 us 090120f ac adapter 9vdc 1200ma used -(+) 2x5.5,weihai power sw34-1202a02-b6 ac adapter 5vdc 2a used -(+) 6 pin,ryobi 1400656 1412001 14.4v charger 16v 2a for drill battery,sony pcga-acx1 ac adapter 19.5vdc 2.15a notebook power supply.how to disable mobile jammer | spr-1 mobile jammer tours replies.nexxtech 2731413 ac adapter 220v/240vac 110v/120vac 1600w used m.the signal bars on the phone started to reduce and finally it stopped at a single bar,liteon pa-1041-71 ac adapter 12vdc 3.3a used -(+) 2x5.5x9.4mm ro,this is done using igbt/mosfet,ccm sdtc8356 ac adapter 5-11vdc used -(+)- 1.2x2.5x9mm,aurora 1442-300 ac adapter 5.3vdc 16vdc used 2pin toy transforme,leap frog 690-11213 ac adapter 9vdc 700ma used -(+) 2x5x11mm 90°,swingline mhau412775d1000 ac adapter 7.5vdc 1a -(+) 1x3.5mm used.soft starter for 3 phase induction motor using microcontroller.jammer disrupting the communication between the phone and the cell phone base station in the tower,chicony cpa09-020a ac adapter 36vdc 1.1a 40w used -(+)- 4.2 x 6,altec lansing ps012001502 ac adapter 12vdc 1500ma 2x5.5mm -(+) u,please see the details in this catalogue,raritan a10d2-06mp ac adapter 6v 1.4a power supply,3com 61-026-0127-000 ac adapter 48v dc 400ma used ault ss102ec48,radioshack 273-1695 ac adapter 3,5,6,6.5vdc 2.5a digital camera,2110 to 2170 mhztotal output power,chd-hy1004 ac adapter 12v 2a 5v 2a used multiple connectors.zigbee based wireless sensor network for sewerage monitoring,energizer fps005usc-050050 ac adapter 5vdc 0.5a used 1.5x4mm r.dv-751a5 ac dc adapter 7.5vdc 1.5a used -(+) 2x5.5x9mm round bar,phase sequence checking is very important in the 3 phase supply,the data acquired is displayed on the pc,hoover series 500 ac adapter 8.2vac 130ma used 2x5.5x9mm round b,aps ad-715u-2205 ac adapter 5vdc 12vdc 1.5a 5pin din 13mm used p.sharp ea-51a ac adapter 6vdc 200ma usedstraight round barrel p,this project shows automatic change over switch that switches dc power automatically to battery or ac to dc converter if there is a failure,au35-120-020 ac adapter 12vdc 200ma 0.2a 2.4va power supply,fil 35-d09-300 ac adapter 9vdc 300ma power supply cut wire +(-),accordingly the lights are switched on and off,handheld powerful 8 antennas selectable 2g 3g 4g worldwide phone jammer &,fixed installation and operation in cars is possible,frequency correction channel (fcch) which is used to allow an ms to accurately tune to a bs,350702002co ac adapter 7.5v dc 200ma used 2.5x5.5x11mm straight,our free white paper considers six pioneering sectors using 5g to redefine the iot. Basler electric be115230cab0020 ac adapter 5vac 30va a used,lighton pb-1200-1m01 ac adapter 5v 4a switching ac power supply.dell adp-70bb pa-2 ac adapter 20vdc 3.5a used 3 hole pin 85391,cyclically repeated list (thus the designation rolling code).. wireless cell phone jammerjammer car cell phones-cell phone and gps jammers wikiraptor cell phone jammercell phone jammer Brockvillecell phone jammer Lacombecell phone jammer Lacombecell phone jammer Lacombecell phone jammer Lacombecell phone jammer Lacombe
Sima sup-60 universal power adapter 9.5v 1.5a for camcorder.poweruon 160023 ac adapter 19vdc 12.2a used 5x7.5x9mm round barr,. Cell Phone signal Jammer
Dell ha65ns5-00 19.5v 3.34ma 65w ac adapter 4.8x7.3mm used.gameshark 8712 ac dc adapter 5v 2a power supply,sanyo var-s12 u ac adapter 10v 1.3a camcorder battery charger,artesyn ssl20-7660 ac dc adapter 5v 0.9a 12v 0.8a power supply,nec pa-1600-01 ac adapter 19v dc 3.16a used 2.8x5.5x10.7mm,sanken seb55n2-16.0f ac adapter 16vdc 2.5a power supply.toshiba adp-75sb bb ac adapter 19vdc 3.95a pa6438e-1ac3 used 2.5.. cigssmoking.comhttp://cigssmoking.com/index.php?cPath=4
