Localization by Time Difference of Arrival (TDOA) with Chan's Method

1. What is TDOA localization?
2. How is TDOA calculated?
3. Is TDOA geolocation accurate?
4. What is TDOA in WSN?

What is TDOA localization?

The key concept of TDOA-based localization technique is to determine the location of the source by evaluating the difference in arrival time of the signal at spatially separated base stations.

How is TDOA calculated?

TDOA Calculation

In the first method, each receiver measures the absolute time instant of signal arrival (time-of-arrival or TOA) as defined by t i above. A difference in time-of-arrivals between two receivers is then calculated to obtain the TDOA measurement.

Is TDOA geolocation accurate?

The short answer. TDOA geolocation results can give locations with as little as ten meters of uncertainty. Unlike other geolocation techniques, TDOA can provide accurate geolocation even for signals with power levels below the noise floor.

What is TDOA in WSN?

The location information of sensors is of great importance for wireless sensor networks. In this paper, we propose a new localization algorithm for the wireless sensor network based on time difference of arrival (TDOA), which is a typical algorithm in the wireless localization field.