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N6854A Emitter Location System

Configuration Guides

System Elements

There are five elements to consider as you configure the emitter location system:

  • Sensors and antenna
  • Software
  • Processor
  • Training and consulting services
  • Support

Step 1. Configure sensors and antenna

Select the number and configuration of your N6841A RF Sensors

The required number of RF sensors depends on the following:

  • The area’s size and terrain
  • Signal of interest power
  • Location of the monitoring sites relative to the area to be monitored

To assist with estimating the number of sensors needed to cover an area, Keysight includes the Sensor Placement and Optimization Tool (SPOT) software with the RF Sensor Management Tool (SMT) software. The SPOT software uses a calibrated map image and propagation models to estimate the RF detection range of monitoring locations and the geolocation coverage area of a network of RF sensors. Work with your local Application Engineer to help determine the right number of RF sensors for your need. Many start-up applications begin with five RF sensors. A five-sensor network enables a mixture of fixed, temporary, and mobile sensors.

N6841A configuration required to make geolocation measurements

  • N6841A-GFP (quoted and ordered as a standalone line item) provides “right to use” an N6841A with the Keysight N6854A Geolocation Server software and is required for each sensor used for geolocation. The quantity should match the number of sensors. Sensors used only for spectrum monitoring or signal analysis do not require this item.
  • N6841A option GPS (quoted and ordered as an N6841A option) supplies a GPS antenna with a 2-meter cable. Select this option for sensors that will be used outdoors.
  • Other N6841A options include: o N6841A option CFP provides a driver to connect the FieldFox analyzer as a microwave downconverter
  • N6841A option EFP enables embedded applications to run without an external PC or network connection
  • N6841A option MFP enables 8 narrowband DDC’s
  • N6841A option SP1 provides an indoor power supply and Keysight recommends purchasing at least one of the N6841A-SP1 power supplies. If the units will be battery operated or mounted outdoors, a battery or IP67 rated power supply is recommended as described in the N6841A power options case study.

N6850A Broadband omnidirectional antenna

The Keysight N6850A Broadband Omni Antenna is a passive, omnidirectional antenna designed for use with receivers that operate up to 6 GHz. With this antenna, you can minimize installation complexity by mounting only one very compact antenna. Its low-profile design makes it ideal for inconspicuous spectrum monitoring applications. Its uniform gain pattern makes it ideal for the time difference of arrival or received signal strength geolocation techniques. It includes a 5-foot Type-N RF cable and mounting bracket.

For more information, refer to the N6850A Broadband Omni Antenna data sheet (5992-1237EN).

Step 2. Configure software

N6854A Geolocation Server software

The Keysight Geolocation Server software is an easy-to-use application for manual geolocation measurements initiated by a Time or RF power trigger. The software is downloadable from www.keysight.com/find/N6854A and requires a license. When you order the N6854A software, the license file can be retrieved from the Keysight Software Manager webpage.

The N6854A provides a perpetual node-locked license to run the Geolocation Server Software with Time Difference of Arrival (TDOA), Received Signal Strength (RSS), and Hybrid (adaptive TDOA plus RSS) geolocation algorithms.

If your organization already owns N6841A RF sensors and you wish to add geolocation capability, you can order the N6854A Geolocation Server software plus the number of N6841A-GFP options needed for the sensors in your network.

For more information, refer to the “N6854A RF Geolocation Server Software” technical overview (5989-9207EN).

Configure the Surveyor 4D Software

Surveyor 4D is a full-featured spectrum monitoring software capable of automating emitter location measurements. It can also task internal and external processes to capture and analyze spectrum events and conduct comprehensive surveys of the RF environment. The core software includes features to make manual and automated geolocation measurements, log, and display the results.

You can configure the Surveyor 4D software by selecting the core software and any additional features for your specific application.

N6820114E (Required) supplies the core Surveyor 4D software.

N6820USDE supplies the Universal Signal Detector.

N6820MR1E supplies Modulation Recognition.

N6820NBRE supplies the streaming narrowband recording feature

N6820EDFE supplies a GUI, features, and filters for operation with external narrowband Direction-Finding Systems (programming is required).

N6820SSYE supplies a Client-Server application, GUI, and utilities to perform synchronous sweeping of multiple RF Sensors (programming is required).

N6820VRXE supplies a virtual receiver player and data endpoints that enable Surveyor 4D to process wideband IQ recordings.

N6820UTPE provides an automated V/UHF voice activity detector [ITAR controlled – requires export license].

N6820ES-

Configure the PathWave Vector Signal Analysis 89601200C software

The VSA software is a widely used program capable of controlling many Keysight products including the N6841A RF sensor. The software is not required for geolocation measurements but can be used for post-analysis of IQ files made while using Surveyor 4D software. For more information, please refer to www.keysight.com/find/VSA

Typical VSA features used with the RF Sensor include:

89601200C supplies the core VSA software

89601AYAC supplies flexible demodulation analysis

• Add other specific wireless formats as needed

 

Application software licensing options

Flexible licensing options allow you to balance your project’s requirements. Your application software may require consistent software operation over a full program lifecycle or may require frequent updates to maintain pace with fast-moving leading-edge applications. Keysight licensing has flexible license terms and types to address your application needs. KeysightCare provides selectable software support as well.

Confidently covered by Keysight Services

Prevent delays caused by technical questions, or system downtime due to instrument maintenance and repairs with Keysight Services. Keysight Services are here to support your test needs with expert technical support, instrument repair and calibration, software support, training, alternative acquisition program options, and more.

A KeysightCare agreement provides dedicated, proactive support through a single point of contact for instruments, software, and solutions. KeysightCare covers an extensive group of instruments, application software, and solutions and ensures optimal uptime, faster response, faster access to experts, and faster resolution.

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