TY - JOUR
T1 - 1090 MHz ADS-B-Based Wide Area Multilateration System for Alternative Positioning Navigation and Timing
AU - Jheng, Siang Lin
AU - Jan, Shau Shiun
AU - Chen, Yu Hsuan
AU - Lo, Sherman
N1 - Publisher Copyright:
© 2001-2012 IEEE.
PY - 2020/8/15
Y1 - 2020/8/15
N2 - The use of the automatic dependent surveillance-broadcast (ADS-B) as a source of alternative positioning, navigation, and timing is attractive as the system has been or soon will be fielded. In this study, a wide-area multilateration (WAM) testbed was developed that implements a time difference of arrival (TDOA) positioning algorithm using the 1090 MHz ADS-B Mode S ES signal in the Taiwan area. The positioning performance of the TDOA-based WAM is influenced by the geometric distribution of ground stations. Common requirements for terrestrial navigation systems target nominal horizontal dilution of precision (HDOP) of 2.828 or lower to support aviation navigation and surveillance [1]-[7]. Meeting such a requirement would necessitate a significant and geometrically diverse number of stations which limits the WAM implementation in countries with limited real estate. It also makes implementation expensive in general. Provided the measurements have adequate accuracy, it is still possible to meet position accuracy targets without such a geometry requirement. However, reducing geometry requirements presents issues with regards to developing a reliable and accurate position solution. This paper proposes a reasonable means of providing an accurate solution given limited station availability and demonstrates the concept in a testbed system implemented in Taiwan. In order to provide more reliable solution, a positioning algorithm is proposed that combines iterative and non-iterative methods to provide reliable convergence to the near optimal solution given the available measurements and the addition of barometric altitude from ADS-B to improve geometry. Importantly, the paper demonstrates positioning performance that meets the requirements for aviation navigation and surveillance services collected with actual flight data and the developed WAM.
AB - The use of the automatic dependent surveillance-broadcast (ADS-B) as a source of alternative positioning, navigation, and timing is attractive as the system has been or soon will be fielded. In this study, a wide-area multilateration (WAM) testbed was developed that implements a time difference of arrival (TDOA) positioning algorithm using the 1090 MHz ADS-B Mode S ES signal in the Taiwan area. The positioning performance of the TDOA-based WAM is influenced by the geometric distribution of ground stations. Common requirements for terrestrial navigation systems target nominal horizontal dilution of precision (HDOP) of 2.828 or lower to support aviation navigation and surveillance [1]-[7]. Meeting such a requirement would necessitate a significant and geometrically diverse number of stations which limits the WAM implementation in countries with limited real estate. It also makes implementation expensive in general. Provided the measurements have adequate accuracy, it is still possible to meet position accuracy targets without such a geometry requirement. However, reducing geometry requirements presents issues with regards to developing a reliable and accurate position solution. This paper proposes a reasonable means of providing an accurate solution given limited station availability and demonstrates the concept in a testbed system implemented in Taiwan. In order to provide more reliable solution, a positioning algorithm is proposed that combines iterative and non-iterative methods to provide reliable convergence to the near optimal solution given the available measurements and the addition of barometric altitude from ADS-B to improve geometry. Importantly, the paper demonstrates positioning performance that meets the requirements for aviation navigation and surveillance services collected with actual flight data and the developed WAM.
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U2 - 10.1109/JSEN.2020.2988514
DO - 10.1109/JSEN.2020.2988514
M3 - Article
AN - SCOPUS:85088873944
SN - 1530-437X
VL - 20
SP - 9490
EP - 9501
JO - IEEE Sensors Journal
JF - IEEE Sensors Journal
IS - 16
M1 - 9069924
ER -