https://www.guidingtech.com/dual-frequency-gps-explained/
Now, to increase the pinpoint location accuracy, a device can be built to use an additional frequency band. This is called a Dual Frequency GPS. It was one of Apple's main focuses when they

https://www.zdnet.com/article/what-is-l5-precision-dual-frequency-gps-why-is-apple-using-it-and-do-you-need-it/
However, under most conditions, dual‑frequency GPS using the L1 and L5 band will offer greater accuracy and reliability. Also: iPhone 14 Pro vs. iPhone 13 Pro: Is it worth the upgrade? Apple

https://www.phonearena.com/news/Dual-frequency-GNSS-GPS-test-S10-vs-iPhone-OnePlus-Pixel-P30-LG_id116234
The GPS Test app that we used is most likely not really optimized to utilize these capabilities and yet it managed to show that some dual-frequency devices, like the ones with Huawei's Kirin 980 chipset, are capable of following almost all satellites they saw in the more challenging indoor scenario. They also show the highest location accuracy of 13 feet - the second at the top P30 Pro, and

https://support.garmin.com/en-US/?faq=9NWiPDU4gM0JWMfdWFol7A
VENU®3 SERIES GPS SMARTWATCHES. Get detailed health and fitness insights. Sports & Fitness. Products. RunningCyclingTacx® Indoor CyclingFitness & Health TrackingDesign Your Own WatchGolfMultisport & TriathleteSwimmingDivingScales & MonitorsJust for Kids. Maps. Cycling MapsOutdoor MapsGolf Course Locator.

https://www.lifewire.com/dual-band-wireless-networking-explained-818279
Benefits of Dual-Band Wireless Networking. By supplying separate wireless interfaces for each band, dual-band 802.11n and 802.11ac routers provide maximum flexibility when setting up a home network. Some home devices require the legacy compatibility and greater signal reach that 2.4 GHz offers, while others may require the additional network

https://www.techtarget.com/searchnetworking/definition/DTMF
Dual tone multi-frequency (DTMF) is the sounds or tones generated by a telephone when the numbers are pressed. These tones are transmitted with the voice channel. DTMF is used to control automated equipment and signal user intent, such as the number they wish to dial. Each key has two tones at specific frequencies.

https://autonomy.trimble.com/en/resources/external-publications/single-vs-dual-frequency-2
DUAL-FREQUENCY Dual-frequency can minimize errors caused by the ionosphere and troposphere, which contains ionized particles that can have a protruding effect on signals and disrupt them. By mitigating these errors, users can to get centimeter-level accuracy, and faster convergence times to get a fixed position.

https://www.wareable.com/garmin/garmin-satellite-systems-explained-gps-glonass-multi-band-tracking
Dual frequency systems - or Multi-Band, as Garmin calls its own solution for this - is essentially a method of tracking that allows for more consistent and accurate positioning in challenging

https://www.navixy.com/blog/dual-frequency-gps-tracking/
Dual-frequency GPS is a major evolution in navigation technology, combining two satellite signal bands - typically L1 and L5 - to surpass the precision and reliability of standard GPS. This method effectively tackles common GPS issues like ionospheric signal distortion and obstructions in urban or forested areas. By leveraging both bands

https://www.nature.com/articles/s41598-018-25892-w
Here, we report the electrical characteristics and electron information in single-frequency (4.52 MHz and 13.56 MHz) and dual-frequency (a combination of 4.52 MHz and 13.56 MHz) capacitive

https://gizmodo.com/why-your-router-has-two-wifi-channels-and-how-they-work-1828650288
When a router is labelled as dual band, it means it can encode and decode radio waves at both the 2.4GHz and 5GHz frequencies. Most new routers launched today will have this functionality, so it

https://beebom.com/dual-frequency-gps-vs-single-frequency-gps/
So, the normal single-frequency GPS receiver that is being used in our smartphones and other devices can only interpret the L1 band and that's why it's called single-frequency GPS. Now, as it can be interpreted from the name dual-frequency GPS, it will be using two different bands. So, the devices which are using L1+L2 or L1+L5 bands are

https://www.hellotech.com/blog/what-is-a-dual-band-router-difference-between-2-4ghz-and-5ghz-wifi
A dual-band router is capable of transmitting radio waves in two different frequency bands: 2.4 GHz and 5 GHz. Since dual-band routers broadcast two frequency bands, you essentially get two WiFi networks. Up until recently, most routers operated on the 802.11b standard, which was limited to the 2.4 GHz band. Now, most modern routers operate on

https://www.itechguides.com/what-is-a-dual-band-router/
A dual-band router is a wireless networking device operating on two different frequency bands. These frequency bands are the 2.4 GHz and 5 GHz bands, providing better connectivity and faster internet speed. The 2.4 GHz frequency band is the more common of the two. Also, it is used by a wide range of devices, including older routers, Wi-Fi

https://rfid.averydennison.com/en/home/news-insights/insights/nfc-dual-frequency-rainfc-products-merging-the-best-of-both.html
Smartrac's new dual-frequency RFID inlays and tags combine both technologies in one innovative, high-performance solution. During NRF 2020: Retail's Big Show in New York in mid-January, Avery Dennison Smartrac's long-term IC partner EM Microelectronic attracted plenty of attention with its second-generation dual-frequency "echo-V" IC.

https://opg.optica.org/oe/abstract.cfm?uri=oe-18-05-5229
A novel dual-frequency pattern is developed which combines a high-frequency sinusoid component with a unit-frequency sinusoid component, where the high-frequency component is used to generate robust phase information, and the unit-frequency component is used to reduce phase unwrapping ambiguities. With our proposed pattern scheme, phase unwrapping can overcome the major shortcomings of

https://ieeexplore.ieee.org/document/10326466
Abstract: This communication investigates a new dual-wideband dual-frequency aperture-shared antenna designed for 5G communication systems. The proposed antenna integrates a Sub-6 GHz modified magneto-electric (ME) dipole antenna and a millimeter wave (MMW) inclined-plane horn antenna, with the magnetic dipole of the ME dipole antenna being repurposed as an inclined-plane horn antenna for the

https://www.nature.com/articles/s41467-024-48250-z
US-induced stimulation was performed by an external dual-frequency transmitter (1 and 3 MHz), function generators (AFG3252C, Tektronix), and power amplifiers (SSPA1M100M-100N, Sunfire Tech), which

https://www.sciencedirect.com/science/article/pii/S1350417724000968
A dual-frequency ultrasound consisting of a continuous low-frequency ultrasound and a pulsed high-frequency ultrasound with a 1 % duty cycle was employed here. The pulse-repetition frequency (PRF) and irradiation time of the focused ultrasound were set at 100 Hz and 3 s, respectively.

https://ieeexplore.ieee.org/abstract/document/10535336
First, we construct a dual-frequency feature encoder Siamese framework to capture local high-frequency signals and global low-frequency signals using CNN and attention mechanisms after dividing the input RS image signals into two channels. Second, we introduce the frequency explicit visual center module as a part of the multifrequency-domain

https://sites.tufts.edu/eeseniordesignhandbook/files/2018/05/Menard-EJ-edit.pdf
Figure 1: Ionospheric irregularities - or Ionospheric scintillation - causes disturbances in GPS signals [4]. particles, satellite signals' speed and other properties are greatly affected. However, the effects cannot be easily predicted due to there being frequent disturbances in the ionosphere [10]. These disturbances cause the

https://www.sciencedirect.com/science/article/pii/S1270963822005235
The dual-frequency signal is fed into the plasma igniter through the cooperative work of excitations and circuits, so as to simultaneously strengthen the thermal effect and kinetic effect of the plasma torch [39]. Download : Download high-res image (72KB) Download : Download full-size image; Fig. 4. Topology circuit of the DFEP excitation.

https://ieeexplore.ieee.org/document/9812719
In this work, a new dual-frequency imaging framework of capacitively coupled electrical impedance tomography (CCEIT) is presented. Unlike conventional single-frequency imaging and recently emerged multifrequency imaging, the dual-frequency imaging adopts two different working frequencies to obtain the real part and the imaginary part of the impedance, respectively. With the real part image and

https://www.dualfrequency.co.uk/
Dual Frequency was founded by friends, advocates and campaigners for social justice, Charlotte Andrew, Carly Hind & Cindy Yau. The first magazine and accompanying resources launched in May 2020 to amplify the words and efforts of those making strides towards a more inclusive world.

https://www.semanticscholar.org/paper/Dual-Frequency%2C-Dual-Mode-Reconfigurable-Digital-Zhang-Xu/592ff8c75d99eb4c32fc8b9f09de56b8da662e2e
A new dual-frequency, dual-mode reconfigurable digital receiver based on Field-Programmable Gate Array (FPGA) dynamic reconfiguration is proposed, which is based on a common hardware platform of high-bandwidth RF front-end, high-speed data acquisition, and real-time signal processing. The receiver adopts the design of dynamically reconfigurable down-conversion, filter extraction, and matched

https://www.baesystems.com/en-us/article/bae-systems-to-develop-next-generation-airborne-decoy-countermeasure
BAE Systems to develop next-generation airborne decoy countermeasure. 2024-05-15T14:00:00+00:00May 15 2024. Dual Band Decoy is a cutting-edge RF self-protection jammer that shields fighter jets from enemy attacks. BAE Systems has been selected by the U.S. Navy to develop Dual Band Decoy (DBD), one of the most advanced radio frequency (RF

https://ieeexplore.ieee.org/document/10222170
To alleviate this problem, a dual-frequency TAT method was proposed to image the rabbit knee joint and to detect meniscal injury. Compared with the traditional single-frequency TAI images, the corresponding dual-frequency TAI images can more clearly and completely reconstruct various joint tissues and detect joint injury, showing more accurate

https://ui.adsabs.harvard.edu/abs/2024arXiv240507127M/abstract
This study introduces an innovative approach to alleviate temperature-induced drift in RI-sensing optical frequency combs (OFCs) by employing active-dummy compensation. The central idea revolves around the utilization of a dual-comb setup, comprising an active-sensing OFC that monitors both sample RI and environmental temperature, and a dummy