Search

Multilateration(MLAT) is commonly used in civil and military surveillance applications to accurately locate an aircraft, vehicle or stationary emitter. MLAT calculates the TDOA of signals by transmitted aircraft and determines the aircraft’s location. With more than four receivers it is possible to estimate the 3D position of the aircraft by calculating the intersection of the resulting hyperbolas and the system integrity. In this study, our objectives are to apply MLAT technique to Jeju terminal control area and to propose a MLAT receiver network to properly estimate the positions of aircraft approaching this area. Based on computer simulations, we determine locations of ground receivers in Jeju terminal control area, calculate estimated position errors of the aircraft with respect to the selected receiver networks, and find the best receiver network with the least position error.

" # $ ! %& # ' # #'! $ ! #!#'' $! '" ! " $()'! % " ! ! # ' #%! #!#'' $ $! % $ !!* ! $ % # $ "! % %+ !(,$# $ "!! #!#'' % % !$ " & -! - % #! % # . ! / $! #!#'' !# " - # % !(0 $++ ## - 1$! !# $ ' #$+ # ' #%$$ $ ! #! '! #% " !# "# $ '" / &" $ ' #$+ !# & ' # !# $ %+# $! #% # !$ % # !$ # #! +# - % !! +!! +! % $! #$+ ! ' ! # ( , #0#'' % !2항공교통관리3) ! # + #& " ! 2상호운용성30 #% " !# ",# 2접근관제구역30 #% " #,++# !# "2접근관제센터3 근래 한정된 공역에서 계속적으로 증가하는 항공 수송량으로 인하여 항공 교통 흐름이 매우 복잡해지고 항공기의 지연 운항 등이 필연적으로 발생하고 있다(국제민간항공기구2) ,43국제공항협의회2, )3및 주요 항공기 제작사2 , #& $3등 주요 항공관련 단체들은 5년까지 항공수요가 현재의 약 배까지 증가할 것으로 공통적인 전망을 발표하였고우리나라의 경우저비용항공사의 확대와 항공자유화 등을 통하여 항공 수송량도 지속적으로 늘어나고 있다(

Multilateration(MLAT) may complement secondary surveillance radar and also act as a real-time backup for the ADS-B system. This System is using time difference of arrival (TDOA) and based on triangulation principle. Each TDOA measurement defines a hyperbola describing possible aircraft locations. The accuracy in MLAT system depends on the positional relationship of the receiver and aircraft. There are various algorithms to localize aircraft based on TOA estimation. In this paper, we use least square method and extended Kalman filter and compare their results. Study results show that the extend Kalman filter provides a better performance than the least square method.

Early remotely-piloted aircraft system (RPAS) development focused on simple reconnaissance to obtain information by visual observation for military demands. Currently, various types of remotely-piloted aircraft (RPA) is being developed worldwide for applications in many different areas. As RPA avionics are combined with CNS/ATM technologies, RPA capabilities will be enhanced and the market is expected to grow rapidly. ICAO has been held the Air Navigation Commission on 14 October 2011 to discuss revising Procedures for air navigation services (PANS) and guidance material related to RPA and their associated systems. It progressed that Annex 2 and 7 will be revised and came into effect from 2012. However most of incorporate revisions are not clear yet. Because the revision articles recommend follow requirements of the state(s). Considering operations of RPA in controlled airspace and between adjacent states, the qualification and training of RPA pilot will be one of the main issues for RPA operation. In this paper, we will take a look at international and domestic trends of regulation framework in ICAO and RPA advanced country in chapter 2.1 and suggest about consideration of remote pilot qualification and training for establishing regulations of remote pilot license.

The recent transition to Performance Based Navigation in aviation enhances the accuracy of aircraft position, safety and efficiency in air traffic operations by using satellite-based navigation system such as GNSS. However, intentional interferences with GNSS signal as well as ones coming from natural phenomena such as solar storm increase. GNSS have very low power and therefore their signals are more susceptible to interferences than ground-based navigation signals. This paper introduces requirements of alternative positioning, navigation and timing(APNT) system and relevant technologies when the GNSS signals are not valid.