How to Locate Interfering Signals with TDoA
Triangulating the time delays between receiver pairs
Determining the location of an unknown signal source in the increasingly crowded spectrum requires advanced direction-finding (DF) techniques. Interference can take various forms, including continuous wave or modulated signals, pulse interference, and narrowband or broadband interference. When locating wideband and digitally modulated interference, Time Difference of Arrival (TDoA) is an effective DF technique. Signal detection, identification, synchronization, and processing are all necessary steps in interference mitigation with TDoA.
Locating the source of an unknown emitter using TDoA requires measuring and triangulating the time delays between receivers. Remote spectrum monitoring software detects the interference. Sophisticated signal processing algorithms analyze and characterize the detected signals. Several synchronized spectrum analyzers, connected to the remote monitoring software network, collect real-time spectrum data of the modulated wideband signal. The software calculates the intersection of the hyperbolas to estimate the emitter’s location using geolocation and timestamping. This process integrates with a mapping system to visually represent the interference signal source.
TDoA Direction-Finding Solution
See demo of TDoA direction-finding
Explore products in our TDoA direction-finding solution
-
![S9910A Keysight Spectrum Management Software (KSMS)]()
S9910A Keysight Spectrum Management Software (KSMS)
-
![N9918B FieldFox Handheld Microwave Analyzer, 26.5 GHz]()
N9918B FieldFox Handheld Microwave Analyzer, 26.5 GHz
Discover resources and insights
Additional resources for locating interfering signals with TDoA
Related use cases
-
![How to Locate Last Mile Interference]()
How to Locate Last Mile Interference
Locating the source of interference in last-mile testing requires direction-finding techniques, such as manual signal triangulation. Learn how to use a directional antenna to hunt last-mile interference in the field.
Learn more
-
![How to Monitor 5G Field Interference]()
How to Monitor 5G Field Interference
Identifying in-band and out-of-band interference requires real-time spectrum analysis and signal-capture capabilities. Learn how to capture elusive, intermittent signals and interference using real-time spectrum analysis.
Learn more
-
![How to Characterize 5G mmWave Air Interface]()
How to Characterize 5G mmWave Air Interface
Characterizing 5G over-the-air performance requires an integrated, portable signal analyzer with a phased array antenna. Learn how to overcome key 5G network deployment challenges by characterizing millimeter-wave path loss and coverage.
Learn more
Get in touch with one of our experts
Need help finding the right solution for you?