Cell phone monitoring software spectrum

Spectrum Monitoring Software

High-speed, high-resolution automated spectrum search to quickly detect, classify and identify signals of interest. With powerful environmental mask triggering and SQL signal database. This audio player software allows you to listen to a variety of IQ and audio file types. Key audio segments can be exported as wave. Signals can be displayed in both time or frequency domain. Fast, effective solution for validating satellite signal integrity. Monitor large blocks of spectrum and perform precise digital modulation analysis with increased configuration flexibility and reduced size and cost.

Not seeing what you need? Snapshot Radio Software Application. Signal Surveyor 4D Software. Last name can not be more than 64 characters. First name can not be more than 64 characters. Company name can not be more than 64 characters. By clicking Download, you accept the privacy statement , which explains how we collect and use your personal data. Alarms can be automatically triggered on detection of unwanted interferers that would degrade the signal integrity. Government regulatory agencies benefit from remote spectrum monitoring because it allows manpower to be effectively multiplied over a wider area and at times when engineers are not normally on duty.

Direct savings are realized through reduced time when engineers are on travel, avoiding unnecessary travel, and focusing travel on times and locations where interference is more likely to occur. Prior to rule-making regulatory agencies can use remote spectrum monitoring to analyze and understand real-world scenarios in bands where new services are to be targeted. Reliable communications are critical for both military operations and for testing high-tech systems which rely on wireless command and control.

Security at military facilities, national boarders, utilities, airports and other sensitive sites must all have access to communications free of impediments and distortion. Spectrum monitoring is crucial to insure that such facilities remain free of interference. The role of enforcing in-building public safety needs e.

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Both standards prescribe periodic measurements to assure communications. For more information go to http: Historically, public safety communications were mostly based on powerful, external high site transmitters to supply sufficient signal levels to reach into buildings.

Modern energy efficient building construction and increasing reliance on anytime, anywhere communications are causing installation of public safety radio enhancement systems. These systems, known in the technical community as Distributed Antenna Systems DAS take the external high site signals, amplify them and evenly distribute the signals throughout the building. Contraband cell phones are a growing problem in correctional facilities.

Inmates use them to coordinate crimes outside prisons, to threaten and intimidate witnesses and their families, and to coordinate assaults on other inmates. Spectrum monitoring with real-time alerts and location estimation lets correctional officers and prison officials know that illegal phone use is occurring, and helps them focus efforts efficiently during search and seizure actions. The use of vacant spectrum allocated to TV broadcast known as white space, can alleviate the spectrum need while opening the path for dynamic spectrum access.

Several measurement campaigns have shown that the TV broadcasting spectrum is mostly used in populated areas. For this reason, these areas are lacking in Internet access. TV white space can take advantage of the improved propagation capabilities of these frequencies to provide affordable Internet access in rural areas. White spaces are also present in densely populated areas as a consequence of the transition from analog to digital TV.


The lower frequencies as compared with the ones used for WiFi which in some places is becoming over crowded. For machine to machine applications and the "Internet of Things" wave, white space has significant advantages both for developed and developing economies. Aviation communications in the area of busy metropolitan airports is especially critical, because the tight timing and coordination of air traffic patterns and runway activity leaves little margin for error.

In an effort to maximize spectrum use efficiency, regulators in many countries have implemented re-banding rules which require users to vacate spectrum and transition to other frequencies. In the US, the MHz frequencies formerly occupied by analog television broadcast will be auctioned to mobile telephony carriers, but the rules for this auction are complex and not all broadcasters will be vacating their channels.

This means that carriers who want to bid on spectrum will need to monitor and analyze the performance of their bidding targets to determine if interference from co-channel broadcasters might occur during periods of unusual propagation. Also, there are a large number of wireless microphones in use which operate on the MHz band, and not everyone will know they have to stop using them after the auctions are complete. Information is beginning to be gathered on how these new PTC signals propagate, and an understanding of PTC system performance is beginning to emerge.

Advanced propagation prediction software has been used to estimate coverage, and verification work is under way using the first deployed base stations to measure and confirm effective RF propagation. PTC radio systems project commissioning teams from several different railroads are using their own individual approaches, with no final testing procedures defined yet.

Communications are a critical component of American Football. The NFL employs large numbers of engineers and professional volunteers to ensure that coaches, referees, and medical teams can communicate during games. Stadium security, concessions, parking, and cleaning crews also rely on communications to ensure fans can enjoy a clean and safe event.

With the massive adoption of wireless devices by consumers, NFL communication engineers and volunteers have an increasingly difficult task of ensuring that interference does not occur. Remote spectrum monitors help multiply resources and provide a dashboard of all radio activity within a sports venue so the efforts of engineers and volunteers can be focused efficiently. In areas where certain frequencies are under-utilized, the spectrum can be re-purposed for other applications.

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Alternatively, little used spectrum can be shared with other applications using cognitive radio techniques. Research is ongoing in many universities and labs throughout the world for new cognitive radio algorithms. Typically this is done when a system user complains of interference from an unknown source. In public safety and critical communications users might complain of broken reception especially in digital voice systems , warbling or squealing analog heterodyne from co-channel signals , or sporadic interference at certain times of the day or night.

Mobile telephony is replacing traditional wireline telephony for some subscribers — hence interference to mobile telephony can be potentially life-threatening if calls for police, fire, or EMS do not go through. Intentional and unintentional interference to aviation, maritime operations, critical infrastructure, and public safety creates a potentially life-threatening scenario that must be quickly addressed.

Resources for this kind of work are expensive, and the work is time-consuming. Understanding the sources of interference, determining if the interference occurs at specific times of the day, and obtaining location estimates for interference sources is critical to maximizing limited engineering resources.

Once an interferer or suspected illegal signal is identified, a geo-location algorithm is employed to fix the approximate position of the signal. This enables the user to narrow down the signal location, minimizing the time and expense for pin-pointing its position. A search can be done for alarm violations that occurred at any of the spectrum monitor probes in the network. Using three probes in the vicinity, the interference position can be geo-located. Power of Arrival POA algorithms are used to position the interference signal.

Three or more probes must be in the vicinity to detect the signal of interest in order to correctly triangulate the position. Time Difference of Arrival TDOA is a technique whereby the time of arrival of a signal is precisely measured at multiple physically separate receivers. To use TDOA, some distinct signal characteristic must be present on the signal in order to synchronize the time of arrival. However, other factors such as receiver variations and the presence of multi-path will present additional errors to the measurement.

In some cases interference signals may exist only at certain times of the day, or certain days of the week. Sometimes an interference signal will cause a severe problem in the network for several hours, only to appear again months later. These issues can be impossible to eliminate unless historical information about the signal of interest is stored.

For difficult to find signals that are mobile or intermittent, logging spectrum history can help identify patterns of the interference signal. Spectrum history can show not only the signals of interest, but also when they occurred. Identifying when signals of interest are present is an important tool to hunting and finding interference.

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The detection of illegal or unlicensed broadcast signals is an important application. By using spectrum monitors, unlicensed broadcasts can be tracked, processed and stored in a database for further examination and potential use in legal proceedings. Many spectrum monitoring tools are available today.

With all the instruments available, making an informed choice can be challenging. Here are a few guidelines for selecting a spectrum monitoring instrument, whether it be a receiver or a spectrum analyzer. It is important to pay attention to specifications and features. Missing or sparse specifications are a warning sign of a low quality instrument.

Specifications that are present, but poor, can be harder to interpret. At the same time, some specific features may distinguish one tool from another. Here are a few pointers:.

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A large Dynamic Range allows you to see a small signal when a large signal is also present. This is essential if the signal you are interested in is small and close in frequency to a large signal. This condition is often the case in a communications system. Unfortunately, dynamic range for a spectrum analyzer can be specified in many different ways with wildly different numbers.

Overload Indicator It is important that your chosen instrument indicate when its front-end is experiencing overload conditions. A front-end overload is quite possible when receiving signals through an antenna and may be generated by a signal that is not even visible in the current span.

Overloads may generate spurious signals spurs that appear to be legitimate signals, and these signals are made worse by poor TOI. If you know that an overload is occurring, you can add attenuation, external band-pass filters, or even move to a different location. If you do not know that an overload is happening, you may waste a lot of time investigating signals that are generated inside the instrument itself!

A remote spectrum analyzer should include a Watchdog timer to insure long-term stability for remotely deployed monitors. Watchdog timers are used to detect and recover from computer malfunctions, where accessibility is limited. Ideally at least 20 MHz instantaneous FFT bandwidth to allow nearly real-time sweeps across a wide spectrum. Instruments with poor TOI will be more susceptible to generating spurious responses spurs internally that may be confused with real, external, signals.

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The app is ostensibly intended for legal monitoring use, and there are certainly legitimate reasons to install the software. Companies, for instance, could inform their employees that they’re surveilling company phones for security purposes

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