Home Electromagnetic Using the electromagnetic spectrum – a limited natural resource

Using the electromagnetic spectrum – a limited natural resource

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Many communication systems face significant spectral challenges. On the one hand, communication systems have to transmit a lot of information at a high rate over long distances, often in the context of multi-participant communication networks. On the other hand, they have to deal with a natural resource in perpetual scarcity: the spectrum. Similar challenges apply to other spectrum dependent systems, such as radar and GNSS systems.

The allocation of frequency ranges to spectrum consuming systems is subject to regulatory approval by the Ministry of Communications. In many cases, the regulator does not allow the use of the same frequency range for multiple systems (civilian or military) for fear of mutual interference, which can prevent the systems from functioning properly and impair their operational efficiency.

The allocation of spectrum to systems should also take into account the spectral environment, which may include neighboring countries and other spectrum consuming entities in the region that have a significant impact on spectrum in the State of Israel.

The Israel Defense Forces (IDF) have defined a new concept: “spectral superiority”. The term describes the combined actions and means required to create spectral freedom of action on a multidimensional battlefield. Freedom of action is achieved by maximizing the spectral resource both in the constitution of force and in the use of force, allowing flexibility and availability from the operational level to the strategic level. Spectrum is a common medium for much of operational systems and missions, having a great impact on everyone on the battlefield, from friendly forces to enemy forces.

Spectral efficiency

In our changing world, as many systems must use electromagnetic support to enable mobility, spectral support becomes a scarce resource. We must therefore leave freedom of action to use the spectrum while reducing physical limitations. For example, many “emergency systems” contain slices of spectrum that are rarely used, which is very inefficient. Other systems use hopping functionalities (time hopping / frequency hopping over a relatively wide spectral slice). Other communication systems only use a few percent of the spectral allocation, thus retaining unused “real estate”.

For example, some radars are assigned a relatively wide frequency range which is not always fully utilized, although reducing the frequency allocation may reduce adverse effects on other radiating systems.

Cope now

Solutions for limited floor space in the real estate world are often based on the construction of high-rise towers. Likewise, the solutions proposed by Omnisys allow different systems to operate in the same frequency band (“ground area”) in the spectral medium. Omnisys makes this possible thanks to its technological capabilities, the use of advanced tools, operations research, “system of systems” engineering and the development of algorithms.

The technological innovation of the company is characterized by its ability to coordinate different types of systems in terms of time, spatial location, frequency, waveform and polarization. Omnisys has proven in its R&D efforts, using advanced modeling methods, that it is possible to combine on the same frequency slice the operations of several systems not currently sharing a common frequency domain.

The solution is based on the use of a new software component, the Smart Network Manager. The role of the network manager is to be a coordinating body between the systems within the framework of the regulations and under predetermined conditions.

The network manager can act passively or actively. In the first case, it checks for coexistence without real intervention. In the second case, it performs active intervention – shutting down the system, changing frequencies and intensities, and changing modulation – as much as the functionality of the system allows.

This component has been developed and tested in a systems integration laboratory, which allows: to examine the coordination between the systems as well under daily working conditions as under extreme conditions; check the level of compatibility with real scenarios; and the use of the systems in various situations.

About Omnisys

Omnisys develops mission planning, management and debriefing systems. The company’s revolutionary BRO line of combat resource optimization products optimize mission performance for a variety of multi-domain missions in general, and spectrum-related missions in particular.

Improving critical decision making, Omnisys systems have been tested and proven in combat conditions and are sold to major armed forces around the world. Omnisys enabling technologies change the rules of the game in an ever-changing battlefield, ensuring real-time success in the face of tomorrow’s challenges. Learn more about Omnisys and its line of pioneering solutions by visiting its website or contacting the company with any request or question.