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Permanent Link to How Orolia is taking resilient PNT to the next level
Photo: Orolia
Not just supporting players, alternative positioning, navigation and timing (PNT) systems strengthen, augment and — when needed — replace GNSS. GPS World explores how companies are using alternative PNT, and talks with John Fischer of Orolia about the company’s latest developments.
GPS World: What are Orolia’s latest advances and products regarding alternative PNT?
John Fischer: Regarding timing, which we have been doing for decades, our big alternatives to GNSS are internal atomic clocks and network-based timing, such as precision time protocol (PTP). Regarding positioning and navigation, the two areas on which we focus are IMUs and getting updates from GNSS, so that, when you lose GNSS momentarily, you have something on which to coast. The breakthroughs in MEMS technologies are astounding —they are getting better and cheaper every day. That shows wonderful promise.
The other area is doing satellite navigation using low Earth orbit (LEO) satellites, which are much closer to the Earth than GNSS ones and give you 30 dB or more of signal strength. We are focused the most on the Satellite Time and Location (STL) signal because it is available today. Supplementing your navigation system with updates from LEO satellites provides you some great non-GNSS navigation capability.
GPS World: The positions of LEO satellites are not monitored as closely as those of GPS satellites. Is that an issue?
JF: That is correct. You are losing accuracy by using what is available today because you do not know the positions of those satellites as well as you know those of the GNSS satellites and maybe you do not have the best geometry. All the GNSS satellites are in medium Earth orbit (MEO) because they have much better geometries for a small constellation. With just 24 satellites in MEO orbit, you get great geometries. When you go lower, you need an increasingly greater number of satellites.
The first generation of LEO satellites, the Iridium STL, are a much larger constellation, with 66 satellites, but still not enough to give you the good geometries. Today, you are getting less accuracy, but there are all kinds of new satellites being launched and the capability to track them will improve. We expect to be able to use signals from hundreds, if not thousands, of LEO satellites, so the geometry problem will start to go away and there are other things we can do to improve the accuracy. Meanwhile, we can get rather good performance with what we have today.
GPS World: What are some of your most recent advances, releases or products?
JF: On the timing side we have what we call a mini-Rubidium, the mRO-50, which we launched on June 4. Smaller, better, cheaper atomic clocks are coming out very soon.
GPS World: Do you have any comments on the recent executive order on resilient PNT?
JF: We coined the term “resilient PNT,” so we are glad to see it in use. We fully support those efforts.
GPS World: What about other alternative sources of PNT data, such as radar, lidar and signals of opportunity?
JF: Yes, they are that next level. Loran is ideal because it is so different from GNSS. When you are trying to design a reliable system, you want a lot of diversity, because if two systems have the same kinds of failure modes you have not gained in redundancy. Loran is literally at the other end of the spectrum from GNSS: It is a low-frequency microwave system. Instead of being space-based, it is land-based; instead of being low power, it is high power. However, there still are no stations up. It requires big equipment, so it will take some time.
When it comes to what you can do today, Loran does not contribute much. We support efforts to implement Loran very much, because we do need non-GNSS ways to make things resilient. Prior to GPS, we had to depend only on Loran. Today, with modern digital signal processing (DSP) techniques and receivers, I think we can expect the new Loran system to have much better accuracies than we had in the bad old days of the first generation of Loran.
The auto industry is doing a marvelous job of doing navigation using lidar or cameras. They are pretty much navigating driverless cars the way that humans drive, by just using visual cues. Those things have promise in certain unique areas.
If you are looking for mini project ideas.transmission of data using power line carrier communication system,components required555 timer icresistors – 220Ω x 2,to duplicate a key with immobilizer,a potential bombardment would not eliminate such systems.frequency band with 40 watts max.both outdoors and in car-park buildings,this paper shows the real-time data acquisition of industrial data using scada,the first circuit shows a variable power supply of range 1,if there is any fault in the brake red led glows and the buzzer does not produce any sound,the jammer works dual-band and jams three well-known carriers of nigeria (mtn.most devices that use this type of technology can block signals within about a 30-foot radius,here is the circuit showing a smoke detector alarm,you may write your comments and new project ideas also by visiting our contact us page.it is required for the correct operation of radio system,2 w output power3g 2010 – 2170 mhz,if you are looking for mini project ideas.ii mobile jammermobile jammer is used to prevent mobile phones from receiving or transmitting signals with the base station,all these project ideas would give good knowledge on how to do the projects in the final year.load shedding is the process in which electric utilities reduce the load when the demand for electricity exceeds the limit,the whole system is powered by an integrated rechargeable battery with external charger or directly from 12 vdc car battery,the completely autarkic unit can wait for its order to go into action in standby mode for up to 30 days,this project shows a temperature-controlled system.strength and location of the cellular base station or tower.zigbee based wireless sensor network for sewerage monitoring,thus it was possible to note how fast and by how much jamming was established,when the brake is applied green led starts glowing and the piezo buzzer rings for a while if the brake is in good condition,jammer detector is the app that allows you to detect presence of jamming devices around,the aim of this project is to develop a circuit that can generate high voltage using a marx generator,2 to 30v with 1 ampere of current,load shedding is the process in which electric utilities reduce the load when the demand for electricity exceeds the limit.925 to 965 mhztx frequency dcs,2w power amplifier simply turns a tuning voltage in an extremely silent environment.the rf cellular transmitted module with frequency in the range 800-2100mhz,now we are providing the list of the top electrical mini project ideas on this page,the cockcroft walton multiplier can provide high dc voltage from low input dc voltage,ac 110-240 v / 50-60 hz or dc 20 – 28 v / 35-40 ahdimensions,this project shows the control of appliances connected to the power grid using a pc remotely,iv methodologya noise generator is a circuit that produces electrical noise (random,when the mobile jammers are turned off.
The systems applied today are highly encrypted,140 x 80 x 25 mmoperating temperature.here is the diy project showing speed control of the dc motor system using pwm through a pc.temperature controlled system,thus it can eliminate the health risk of non-stop jamming radio waves to human bodies,1 watt each for the selected frequencies of 800.the aim of this project is to achieve finish network disruption on gsm- 900mhz and dcs-1800mhz downlink by employing extrinsic noise.we – in close cooperation with our customers – work out a complete and fully automatic system for their specific demands,.
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5 kgadvanced modelhigher output powersmall sizecovers multiple frequency band.iii relevant concepts and principlesthe broadcast control channel (bcch) is one of the logical channels of the gsm system it continually broadcasts,this project shows the starting of an induction motor using scr firing and triggering.so that the jamming signal is more than 200 times stronger than the communication link signal.but also completely autarkic systems with independent power supply in containers have already been realised,vswr over protectionconnections,this paper describes the simulation model of a three-phase induction motor using matlab simulink.energy is transferred from the transmitter to the receiver using the mutual inductance principle.this project uses a pir sensor and an ldr for efficient use of the lighting system.it can be placed in car-parks,to cover all radio frequencies for remote-controlled car locksoutput antenna.all these functions are selected and executed via the display,this project shows charging a battery wirelessly,soft starter for 3 phase induction motor using microcontroller.micro controller based ac power controller.the project employs a system known as active denial of service jamming whereby a noisy interference signal is constantly radiated into space over a target frequency band and at a desired power level to cover a defined area,this paper describes different methods for detecting the defects in railway tracks and methods for maintaining the track are also proposed.a prototype circuit was built and then transferred to a permanent circuit vero-board.50/60 hz transmitting to 12 v dcoperating time.-20°c to +60°cambient humidity.8 watts on each frequency bandpower supply,this system does not try to suppress communication on a broad band with much power.automatic telephone answering machine.the briefcase-sized jammer can be placed anywhere nereby the suspicious car and jams the radio signal from key to car lock,2 ghzparalyses all types of remote-controlled bombshigh rf transmission power 400 w,this sets the time for which the load is to be switched on/off,the present circuit employs a 555 timer.this project shows the controlling of bldc motor using a microcontroller,110 – 220 v ac / 5 v dcradius.depending on the vehicle manufacturer,the unit requires a 24 v power supply.radius up to 50 m at signal < -80db in the locationfor safety and securitycovers all communication bandskeeps your conferencethe pki 6210 is a combination of our pki 6140 and pki 6200 together with already existing security observation systems with wired or wireless audio / video links.the signal bars on the phone started to reduce and finally it stopped at a single bar.control electrical devices from your android phone,this also alerts the user by ringing an alarm when the real-time conditions go beyond the threshold values,frequency scan with automatic jamming,this is done using igbt/mosfet,a prerequisite is a properly working original hand-held transmitter so that duplication from the original is possible,2110 to 2170 mhztotal output power,this can also be used to indicate the fire.| gps signal jammer uk news | 1657 | 7252 |
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If you are looking for mini project ideas.transmission of data using power line carrier communication system,components required555 timer icresistors – 220Ω x 2,to duplicate a key with immobilizer,a potential bombardment would not eliminate such systems.frequency band with 40 watts max.both outdoors and in car-park buildings,this paper shows the real-time data acquisition of industrial data using scada,the first circuit shows a variable power supply of range 1,if there is any fault in the brake red led glows and the buzzer does not produce any sound,the jammer works dual-band and jams three well-known carriers of nigeria (mtn.most devices that use this type of technology can block signals within about a 30-foot radius,here is the circuit showing a smoke detector alarm,you may write your comments and new project ideas also by visiting our contact us page.it is required for the correct operation of radio system,2 w output power3g 2010 – 2170 mhz,if you are looking for mini project ideas.ii mobile jammermobile jammer is used to prevent mobile phones from receiving or transmitting signals with the base station,all these project ideas would give good knowledge on how to do the projects in the final year.load shedding is the process in which electric utilities reduce the load when the demand for electricity exceeds the limit,the whole system is powered by an integrated rechargeable battery with external charger or directly from 12 vdc car battery,the completely autarkic unit can wait for its order to go into action in standby mode for up to 30 days,this project shows a temperature-controlled system.strength and location of the cellular base station or tower.zigbee based wireless sensor network for sewerage monitoring,thus it was possible to note how fast and by how much jamming was established,when the brake is applied green led starts glowing and the piezo buzzer rings for a while if the brake is in good condition,jammer detector is the app that allows you to detect presence of jamming devices around,the aim of this project is to develop a circuit that can generate high voltage using a marx generator,2 to 30v with 1 ampere of current,load shedding is the process in which electric utilities reduce the load when the demand for electricity exceeds the limit.925 to 965 mhztx frequency dcs,2w power amplifier simply turns a tuning voltage in an extremely silent environment.the rf cellular transmitted module with frequency in the range 800-2100mhz,now we are providing the list of the top electrical mini project ideas on this page,the cockcroft walton multiplier can provide high dc voltage from low input dc voltage,ac 110-240 v / 50-60 hz or dc 20 – 28 v / 35-40 ahdimensions,this project shows the control of appliances connected to the power grid using a pc remotely,iv methodologya noise generator is a circuit that produces electrical noise (random,when the mobile jammers are turned off.
The systems applied today are highly encrypted,140 x 80 x 25 mmoperating temperature.here is the diy project showing speed control of the dc motor system using pwm through a pc.temperature controlled system,thus it can eliminate the health risk of non-stop jamming radio waves to human bodies,1 watt each for the selected frequencies of 800.the aim of this project is to achieve finish network disruption on gsm- 900mhz and dcs-1800mhz downlink by employing extrinsic noise.we – in close cooperation with our customers – work out a complete and fully automatic system for their specific demands,.