Analysis has shown that information exchange between radar and communications greatly enhances sharing performance. Once the current/future system state information is exchanged, radar and communication systems may use coordinated interference avoidance, mitigation, and amalgamation techniques that are otherwise impossible when the systems do not share information and are forced to reactively sense-andavoid in the spectrum. In addition, information exchange enables these systems to engage in joint co-designed and cooperating operating modes that open the door to amalgamated RC waveforms where the RF equipment can synergistically support each other's operation.

Chapter Contents:

• 20.1 Introduction, background, and the "Three A's"of radar–comms spectrum sharing
• 20.1.1 Avoid & mitigate interference
• 20.1.2 Accept interference
• 20.1.3 Amalgamate waveforms
• 20.2 Business cases for spectrum stakeholders
• 20.3 Maximizing the joint capacity of a radar–communication network
• 20.4 Theory of JDO SSPARC
• 20.5 JDO SSPARC channel estimation
• 20.6 High-fidelity JDO SSPARC design example
• 20.7 A new approach to radar/communication spectrum sharing
• 20.8 Architecture of the spectrum sharing system
• 20.8.1 Slow-time control loop via sharing policy composition
• 20.8.2 Fast-time control loop via sharing policy enforcement
• 20.9 Performance of the RCS3
• 20.9.1 Simulation results for radar/communication spectrum sharing
• 20.9.2 Temporally coordinated slow-frequency hopping between radar and communications via RAC
• 20.9.3 Temporally coordinated transmit muting for military MANETs via CAR
• 20.10 Summary
• 20.11 Looking ahead
• Acknowledgments and disclaimer
• References

Inspec keywords: radar interference; military radar; radio spectrum management

Other keywords: amalgamated RC waveforms; joint co-designed mode; coordinated interference avoidance; cooperating operating mode; sharing performance; real-time radar; current/future system state information; amalgamation techniques; mitigation techniques; RF equipment; communication spectrum sharing; information exchange

Subjects: Radar equipment, systems and applications; Radio links and equipment; Electromagnetic compatibility and interference; Radar and radiowave systems (military and defence)