#GPS navigation L2 L5 antenna

[miniaturewhispersdream]

CT-4080HB-DJ New Anti-Drone RC GPS FPV 190W Jammer up to 1600m 

Built-in LiFePO4 Battery 1-2 Hours   Built-in Directional Antennas Works from a closed suitcase                                                                                 http://jammers4u.com/drones-jammer/new-portable-anti-drone-rc-gps-fpv-10-30w-per-band-total-190w-jammer-up-to-1500m

8 Bands, Built-in Directional Antennas Powerful 10-30W per band total 190W Built-in Battery 1-2h, LED Status

CT–4080HB-DJ 10 Bands 1 2400-2500MHz: WiFi FPV RC 2.4GHz 25W 2 2400-2500MHz: WiFi FPV RC 2.4GHz 25W 3 1560-1620MHz: GPS L1 + Glonass L1 30W 4 5.7-.5.9GHz : WiFi FPV RC 5.8GHz 10W 5 860-950MHz: RC FPV 900MHz 30W 6 5.2-.5.8GHz: WiFi RC FPV 10W 7 1150-1300MHz: GPS Glonass L2 + L5 FPV 30W 8 433MHz: RC 30W Total : 190W Jamming range 500~1600 Meters Cover all commercial Drones / UAVs like Dji, Mavic 2 3 pro, Phantom Pro, Phantom 4, Phantom 3 Professional, Advanced, Standard series, Inspire Series etc. The jamming distance always varied depending on the signal strength and location

 http://jammers4u.com/drones-jammer/new-portable-anti-drone-rc-gps-fpv-10-30w-per-band-total-190w-jammer-up-to-1500m

#frequencies #dronejammer #Drones #UAVs #Remote #Controls #FPV #firstview #wireless #video #streaming #2.4Ghz #5.2Ghz  #5.8Ghz  #1.2Ghz #1.3Ghz #900Mhz #navigation #GPS #Glonass #protection #defence #interference #electronic  #warfare  #jamming #jammer #jammers #jammers4u #signaljammer    #ew  #electronicwarfare #defence #deny #destroy

[viswatechynology]

GPS

GPS?

GPS is one of many GNSS that provides positioning, navigation and timing (PNT) measurements. While operated by the U.S. Space Force, a branch of the U.S. Armed Forces, GPS is available for use by anyone worldwide.

GPS was started in 1973, launching its first satellite in 1978. Satellites are developed and launched in series known as blocks. In total, 10 Block I GPS satellites were launched between 1978 and 1981. The Block II series satellites were launched beginning in 1989 and were capable of broadcasting on two L-Band radio frequencies. GPS’ Block II had several developmental series, including Block IIA, IIR, IIR-M and IIF. Each set of satellites built upon the previous designs and capabilities, culminating in Block III. This third generation of GPS satellites begins with Block IIIA series’ new signals and higher broadcasting power. The first IIIA satellite of 10 was launched in 2018.

What does GPS stand for?

GPS stands for Global Positioning System. It’s also often used to describe the positioning system itself, for example, your vehicle’s built-in GPS.

How does GPS work?

Like many other GNSS constellations, GPS includes three main segments: the space segment, control segment and user segment.

The GPS space segment includes over 30 satellites in orbit operated and maintained by the U.S. Space Force. These satellites broadcast radio signals to control and monitoring stations on Earth and directly to users requiring highly precise satellite positioning.

The U.S. Space Force also oversees the GPS control segment. It includes master control and backup control stations, dedicated ground antennas and several monitor stations located worldwide. These stations work to ensure GPS satellites are healthy, orbiting in the correct locations and have accurate atomic clocks on board. These stations are integral to the overall health and accuracy of the GPS constellation.

Read More

The user segment includes everyone relying upon GPS satellites for PNT measurements. From a mobile phone providing directions to autonomous vehicles requiring lane-level positioning accuracy; from a farmer tracking planting and harvesting routes year-over-year to a UAV mapping a rainforest, many applications use GPS for high precision positioning and accuracy around the world.

What are GPS satellite signals?

Satellites are continually broadcasting their orbital position and exact time at that position on radio frequencies. That signal is received by antennas, along with at least three other satellite signals, then processed in a GPS receiver to compute a user’s location.

GPS broadcasts on L1 (1575.42 MHz), L2 (1227.60 MHz) and L5 (1176.45 MHz) civilian frequencies; GPS also broadcasts on L3 (1381.05 MHz) and L4 (1379.913 MHz) for governmental and regional satellite-based augmentation systems (SBAS). Several satellites also broadcast M-code, a military code carried on the L1 and L2 frequencies designed for exclusive use by the U.S. military.

What is M-code?

M-code is a GPS-specific signal broadcast to support the United States Department of Defense. This signal was first broadcast with the launch of the Block IIR-M satellite in 2005. M-code provides a layer of defense against jamming interference through 21 M-code-capable GPS satellites.

M-code broadcasts on the existing GPS L1 and L2 L-Band frequencies but is modulated to not interfere with L1/L2 signals. Military receivers can compute PNT through M-code alone. Further, military applications use M-code to increase power to L1 and L2 signals to build resilience against interference, jamming and spoofing incidents. GPS signals are still susceptible to jamming, but M-code provides a layer of defense against such interference. There are many additional layers of anti-jamming defenses critical to establishing assured PNT on GPS systems.

GPS accuracy

A positioning system is only as good as its processor. A high-precision GPS receiver will be far more accurate than a mobile phone, for example. Potential sources of errors are identified and modeled at monitoring and control stations to optimize accuracy.

Most errors come from clock errors, orbital drift, atmospheric and multipath delays and radio frequency interference. These sources constantly threaten positioning, navigation and timing accuracy by contributing to geometric dilution of precision.

Some technologies help mitigate dilution of precision and these errors, including subscriptions to GNSS/GPS correction services, SBAS and the fusion of additional sensors like inertial navigation systems or radar. More precise GPS receivers also help mitigate errors through different algorithms by computing a position through pseudorange or carrier wave calculations.

Read More

We explain more about how to mitigate errors in both episode three and episode four of our Introduction to GNSS webinar series.

GPS vs. GNSS: What is the difference?

GNSS is a way of describing every satellite constellation in orbit; GPS is one of several constellations making up GNSS. From GPS to GLONASS (operated by Roscosmos State Corporation for Space Activities in Russia), many constellations make up GNSS. Positioning technology relies on many different constellations to provide accurate and reliable PNT. Instead of GNSS vs. GPS, a better way to consider these technologies is how GPS compares to other GNSS constellations.

We compare GPS to other constellations like GLONASS, BeiDou and Galileo in our article, What is GNSS.

Applications of GPS

GPS supports applications around the world relying on satellite technology for assured positioning, navigation and timing measurements. These applications differ by industry, but the use of GPS is based on their need for a precise position, reliable and safe navigation, tracking and monitoring an object’s movement, surveying and mapping of an area, or timing within a billionth of a second.

Read More

For example, mining applications rely on GPS to survey an area before beginning operations. Companies track potential mineral deposits, identify which areas to avoid to lessen their environmental impact and enable autonomous machinery transporting minerals across the site.

Applications requiring high-precision positioning use GPS alongside other constellations. However, because of its encrypted M-code signal, the U.S. military relies on GPS in a unique way. M-code enables the military to secure continual access to positioning and build resiliency to potential jamming and interference sources.

[viswatech]

GPS

GPS?

GPS is one of many GNSS that provides positioning, navigation and timing (PNT) measurements. While operated by the U.S. Space Force, a branch of the U.S. Armed Forces, GPS is available for use by anyone worldwide.

GPS was started in 1973, launching its first satellite in 1978. Satellites are developed and launched in series known as blocks. In total, 10 Block I GPS satellites were launched between 1978 and 1981. The Block II series satellites were launched beginning in 1989 and were capable of broadcasting on two L-Band radio frequencies. GPS’ Block II had several developmental series, including Block IIA, IIR, IIR-M and IIF. Each set of satellites built upon the previous designs and capabilities, culminating in Block III. This third generation of GPS satellites begins with Block IIIA series’ new signals and higher broadcasting power. The first IIIA satellite of 10 was launched in 2018.

What does GPS stand for?

GPS stands for Global Positioning System. It’s also often used to describe the positioning system itself, for example, your vehicle’s built-in GPS.

How does GPS work?

Like many other GNSS constellations, GPS includes three main segments: the space segment, control segment and user segment.

The GPS space segment includes over 30 satellites in orbit operated and maintained by the U.S. Space Force. These satellites broadcast radio signals to control and monitoring stations on Earth and directly to users requiring highly precise satellite positioning.

The U.S. Space Force also oversees the GPS control segment. It includes master control and backup control stations, dedicated ground antennas and several monitor stations located worldwide. These stations work to ensure GPS satellites are healthy, orbiting in the correct locations and have accurate atomic clocks on board. These stations are integral to the overall health and accuracy of the GPS constellation.

Read More

The user segment includes everyone relying upon GPS satellites for PNT measurements. From a mobile phone providing directions to autonomous vehicles requiring lane-level positioning accuracy; from a farmer tracking planting and harvesting routes year-over-year to a UAV mapping a rainforest, many applications use GPS for high precision positioning and accuracy around the world.

What are GPS satellite signals?

Satellites are continually broadcasting their orbital position and exact time at that position on radio frequencies. That signal is received by antennas, along with at least three other satellite signals, then processed in a GPS receiver to compute a user’s location.

GPS broadcasts on L1 (1575.42 MHz), L2 (1227.60 MHz) and L5 (1176.45 MHz) civilian frequencies; GPS also broadcasts on L3 (1381.05 MHz) and L4 (1379.913 MHz) for governmental and regional satellite-based augmentation systems (SBAS). Several satellites also broadcast M-code, a military code carried on the L1 and L2 frequencies designed for exclusive use by the U.S. military.

What is M-code?

M-code is a GPS-specific signal broadcast to support the United States Department of Defense. This signal was first broadcast with the launch of the Block IIR-M satellite in 2005. M-code provides a layer of defense against jamming interference through 21 M-code-capable GPS satellites.

M-code broadcasts on the existing GPS L1 and L2 L-Band frequencies but is modulated to not interfere with L1/L2 signals. Military receivers can compute PNT through M-code alone. Further, military applications use M-code to increase power to L1 and L2 signals to build resilience against interference, jamming and spoofing incidents. GPS signals are still susceptible to jamming, but M-code provides a layer of defense against such interference. There are many additional layers of anti-jamming defenses critical to establishing assured PNT on GPS systems.

GPS accuracy

A positioning system is only as good as its processor. A high-precision GPS receiver will be far more accurate than a mobile phone, for example. Potential sources of errors are identified and modeled at monitoring and control stations to optimize accuracy.

Most errors come from clock errors, orbital drift, atmospheric and multipath delays and radio frequency interference. These sources constantly threaten positioning, navigation and timing accuracy by contributing to geometric dilution of precision.

Some technologies help mitigate dilution of precision and these errors, including subscriptions to GNSS/GPS correction services, SBAS and the fusion of additional sensors like inertial navigation systems or radar. More precise GPS receivers also help mitigate errors through different algorithms by computing a position through pseudorange or carrier wave calculations.

Read More

We explain more about how to mitigate errors in both episode three and episode four of our Introduction to GNSS webinar series.

GPS vs. GNSS: What is the difference?

GNSS is a way of describing every satellite constellation in orbit; GPS is one of several constellations making up GNSS. From GPS to GLONASS (operated by Roscosmos State Corporation for Space Activities in Russia), many constellations make up GNSS. Positioning technology relies on many different constellations to provide accurate and reliable PNT. Instead of GNSS vs. GPS, a better way to consider these technologies is how GPS compares to other GNSS constellations.

We compare GPS to other constellations like GLONASS, BeiDou and Galileo in our article, What is GNSS.

Applications of GPS

GPS supports applications around the world relying on satellite technology for assured positioning, navigation and timing measurements. These applications differ by industry, but the use of GPS is based on their need for a precise position, reliable and safe navigation, tracking and monitoring an object’s movement, surveying and mapping of an area, or timing within a billionth of a second.

Read More

For example, mining applications rely on GPS to survey an area before beginning operations. Companies track potential mineral deposits, identify which areas to avoid to lessen their environmental impact and enable autonomous machinery transporting minerals across the site.

Applications requiring high-precision positioning use GPS alongside other constellations. However, because of its encrypted M-code signal, the U.S. military relies on GPS in a unique way. M-code enables the military to secure continual access to positioning and build resiliency to potential jamming and interference sources.

[jammers4u]

CT-4001P Directional Antenna all GPS L1-5 Glonass BeiDou Galileo Signals Jammer up to 1200m

Portable directional handheld satellite navigation systems GPS Siginal jammer that is designed to be compact for easy carrying and military terrain use. It is fully autonomous with built in directional antenna and battery for 80min operation, and range up to 1200m.  Specialized to jamm all GPS L1 L2 L3 L4 L5, Glonass, BeiDou, Galileo signals that use most wireless controlled remote vehicles, Robots, UAVs, and drones. It is best suited for military special operations teams, police, security forces that are deployed in different situations

Portable Anti-GPS Jammer

Max 34W, 4 RF Modules, Cover all 5 GPS Bands

80 mins Built-in Battery, Battery LED Status

👉🏻 E-mail: sales@jammers4u.com

#jammer #jammers #jamming #blocker #blocking #jammers4u #system #techology #signaling #signal #lte #security #protect #police #army #military #militaryunits #militarydefense #gps #gpsjammer #portable #uav #antenna #drone #nodrone #dronejammer

[suhyjammers4u]

CT-4001P Directional Antenna all GPS L1-5 Glonass BeiDou Galileo Signals Jammer up to 1200m

Portable directional handheld satellite navigation systems GPS Siginal jammer that is designed to be compact for easy carrying and military terrain use. It is fully autonomous with built in directional antenna and battery for 80min operation, and range up to 1200m.  Specialized to jamm all GPS L1 L2 L3 L4 L5, Glonass, BeiDou, Galileo signals that use most wireless controlled remote vehicles, Robots, UAVs, and drones. It is best suited for military special operations teams, police, security forces that are deployed in different situations

Portable Anti-GPS Jammer

Max 34W, 4 RF Modules, Cover all 5 GPS Bands

80 mins Built-in Battery, Battery LED Status

👉🏻 E-mail: sales@jammers4u.com

#jammer #jammers #jamming #blocker #blocking #jammers4u #system #techology #signaling #signal #lte #security #protect #police #army #military #militaryunits #militarydefense #gps #gpsjammer #portable #uav #antenna #drone #nodrone #dronejammer

[tastydregs]

High end smartphones later in 2018 should use Broadcom chip enables centimeter accurate GPS

GPS World tested a development kit systems with the Broadcom® BCM47755 chip. The chip can use the regular L1 GPS frequency as well as the more accurate L5 GPS frequency.

The recently released Samsung Galaxy S9 did not have the BCM47755 chip. It is possible that the Samsung Galaxy Note 9 which will be released in the Q3 2018 could have it and the Google Pixel 3 in Q4 2018 or the new Apple iPhone.

Tests with Broadcom BCM47755 and modified android cellphones

Horizontal accuracy for Broadcom reached 10 centimeters while the precision receiver reaches better than 3 centimeters. The degradation is in part due to the difference in quality of the carrier phase and the different number of dual frequency satellites processed. Precision devices provide measurements on E1/L1, L2 and L5/E5 providing at least dual frequency data from GPS, GLONASS, Galileo, BeiDou and QZSS.

The Broadcom chipset tested provided dual frequency GPS and Galileo along with single-frequency GLONASS and BeiDou; however, due to limited BeiDou constellation visible in California, data from this constellation was not used.

The RTX-Fast solution for Broadcom reaches 30 cm horizontal error in 68% of the cases in approximately 12 minutes. The RTX-Fast convergence using precision GNSS data is near instantaneous.

Similar tests were performed using an external cell-phone GNSS antenna, which is close to the antenna used in a typical smartphone. RTK performance shows centimeter-level accuracies and reasonable convergence times, which are slightly worse than the results with the professional antenna.

Based on the testing with existing devices (modified Nexus 9 and Samsung S7) it is possible to achieve position solutions of 1–2-meter accuracy in ideal static scenarios. This is a significant improvement in accuracy for Android based devices.

Increasing numbers of GPS satellites provide the L5 frequency.

Japan’s US $1.9 billion Quasi-Zenith Satellite System (QZSS) uses error correction and improves on urban navigation by adding a set of satellites that guarantees one is visible directly overhead even in the densest part of Tokyo. The system is to come online in 2018.

Bosch, Geo++, Mitsubishi Electric, and U-blox established a joint venture called Sapcorda Services in August, 2017 to provide centimeter-level accuracy. Sapcorda uses ground stations to measure errors in GPS and Galileo satellite signals due to atmospheric distortions. Those measurements would then be sent to receivers in handsets and other systems to improve accuracy.

The Broadcom® BCM47755 location hub is a single-chip device that combines location awareness capabilities with the typical functions of a sensor hub. The combination provides synergistic benefits that cannot be achieved with multiple ICs, such as low power consumption, higher accuracy, reduced footprint and a smaller BOM.

The BCM47755 supports two GPS frequencies (L1+L5), and as a result, achieves lane-level accuracy outdoors and much higher resistance to multipath and reflected signals in urban scenarios, as well as higher interference and jamming immunity.

Furthermore, the BCM47755 incorporates numerous technologies that enable ultralow power consumption in both the location function and the sensor hub function. The device features a low-power RF path, a Big/Little CPU configuration composed of an ARM-based 32-bit Cortex-M4F (CM4), an ARM-based Cortex-M0 (CM0), and is built in a 28 nm process.

The BCM47755 chip supports two frequencies (L1+L5), and as a result, achieves lane-level accuracy outdoors and much higher resistance to multipath and reflected signals in urban scenarios, as well as higher immunity to interference and jamming. The BCM47755 can simultaneously receive the following signals: • GPS L1 C/A • GLONASS L1 • BeiDou (BDS) B1 • QZSS L1 • Galileo (GAL) E1 • GPS L5 • Galileo E5a • QZSS L5

It can be used in • Smartphones • Tablets • Mobile accessories • Wearables • Digital cameras

[rfantennaindia]

GPS/GNSS/Galileo L2 + L5 Band SMD Passive Ceramic Antenna

Our GPS/GNSS/Galileo L2 + L5 Band SMD Passive Ceramic Antenna is designed for highly accurate and reliable positioning and navigation. Featuring dual-band support for L2 and L5 frequencies, this compact, high-performance antenna is ideal for applications requiring precise satellite signal reception, such as automotive, surveying, and IoT devices. Its SMD (Surface Mount Device) design ensures easy integration into your system, making it perfect for space-constrained environments while delivering excellent signal integrity and minimal interference.

[rfantennaindia]

An RF (radio frequency) antenna is a device designed to transmit or receive radio waves in the RF spectrum, which typically includes frequencies from about 3 kHz to 300 GHz. RF antennas come in a variety of types and designs, including dipole antennas, patch antennas, Yagi antennas, and more.

The specific type of RF antenna used depends on the application, the frequency range, and other factors. For example, dipole antennas are simple and commonly used for applications such as FM radio broadcasting and TV reception, while Yagi antennas are often used for long-range directional communication, such as in amateur radio or cellular networks.

In general, an RF antenna works by converting electrical signals into radio waves that can be transmitted through the air, or by converting received radio waves back into electrical signals that can be processed by electronic devices. RF antennas are used in a wide variety of applications, including wireless communication, broadcasting, navigation, and remote sensing.

[miniaturewhispersdream]

Anti Drone UAVs RC GPS FPV Video Jammer

Anti Surveillance/Reconnaissance FPV Video Drone Jammer up to 600m Recent battlefield activities have shown increased use of small, commercial , drones as a support for troops in field and for artillery. Drones as DJI models with FPV “first-person view” are very effectively used as an eagle eye support for artillery or infantry thus greatly increasing efficiency and having a real time observation and ability to correct fire trajectory and confirm hits. Drone would usually hover over the targeted unit or object, sending a real time video feed streaming to an artillery or infantry unit that would be able to actually see its effect on the ground from above.Artillery or unit that is equipped with a drone with real time video feed support is far more precise and lethal. Any military unit that does not have a jammer protection can be considered fully visible and very vulnerable in a modern battlefield. Modern HD and specialized IC cameras that are mounted on drones can clearly see any soldiers from 200m and closer and provide the enemy with precise troops location and formation information. For those reasons www.jammers4u.com has created a special jammer, designed to blind a surveillance drone. With omni-directional antennas, range of 600m and customized RF  jamming bandwidths aimed at all frequencies of commercial Drones UAVs Remote Controls and FPV “first-person view” wireless video streaming on 2.4Ghz, 5.2Ghz, 5.8Ghz, 1.2Ghz-1.3Ghz, 900Mhz and navigation GPS Glonass L1 L2 L3 L4 L5, CT-1080H-DJ Pro is the best protection for any troop movements or hideouts.  http://jammers4u.com/drones-jammer/helios-powerful-59w-8-antenna-uavs-drone-rc-gps-handheld-jammer-up-to-600m CT-1080H-DJ Pro makes small special ops. units invisible in a field or in action, if artillery fully depends on drone video stream support. Portability of CT-1080H-DJ Pro would not impair agility of the solder who is carrying it, since it weighs only 2kg and battery can work for 45min of constant jamming. It should accompany any mission-critical action, diversions, troop movements, to save lives and assure operation success. Commercial drones are cheap, functional, widely available, and there is going to be even more of them used in a war, since they have proved very useful and they must be considered as a new biggest potential threat for exposed troops. www.jammers4u.com

2 Years warranty, Neutral packing,

OEM Manufacturer : R&R GROUP INTERNATIONAL

E-mail: sales@jammers4u.com http://www.jammers4u.com