Operational Integration of Required Time of Arrival (RTA) with Time-Based Management (TBM): Concept of Operations and Human-in-the-Loop Simulation Results

This paper presents a new algorithm for the deinterleaving of radar signals, using the direction of arrival (DOA), carrier frequency (RF), and time of arrival (TOA). The algorithm is mainly applied to pulse repetition interval (PRI) signals. This algorithm consists of two steps: In the first step, a PRI transformation is used to the received pulses after pre-deinterleaved of frequency and DOA. In this step, radar signals having the same frequency and DOA are identified as the same class. In the second step, the number of existing emitters and their PRIs is determined by using TOA information. The algorithm for deinterleaving uses the information obtained from the previous analysis to reduce the PRI errors. The simulation results show that the algorithm is successful in high pulse density environments and for the complex signal types.

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Particle Swarm Optimization with Required Time of Arrival Constraint for Aircraft Trajectory

SAE International Journal of Aerospace ◽

10.4271/01-13-02-0020 ◽

2020 ◽

Vol 13 (2) ◽

pp. 269-291

Author(s):

Alejandro Murrieta Mendoza ◽

Ruxandra Mihaela Botez ◽

Hugo Ruiz ◽

Sonya Kessaci

Keyword(s):

Particle Swarm Optimization ◽

Particle Swarm ◽

Time Of Arrival ◽

Swarm Optimization ◽

Aircraft Trajectory ◽

Required Time Of Arrival

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X-Ray Pulsar Profile Recovery Based on Tracking-Differentiator

Mathematical Problems in Engineering ◽

10.1155/2016/4238165 ◽

2016 ◽

Vol 2016 ◽

pp. 1-10 ◽

Cited By ~ 3

Author(s):

Dapeng Zhang ◽

Wei Zheng ◽

Yidi Wang ◽

Lu Zhang

Keyword(s):

Simulation Experiment ◽

Signal To Noise Ratio ◽

Time Of Arrival ◽

Signal To Noise ◽

Important Work ◽

X Ray ◽

Tracking Differentiator ◽

Cascade Structure ◽

Simulation Results ◽

Application Requirements

The profile recovery is an important work in X-ray pulsar-based navigation. It is a key step for the analysis on the pulsar signal’s characteristic and the computing of time of arrival (TOA). This paper makes an argument for an algorithm based on the tracking-differentiator (TD) to recover the profile from the low Signal-to-Noise Ratio (SNR) signals. In the method, a TD filter with cascade structure is designed which has very low phase delay and amplitude distortion. In the simulation experiment, two typical pulsars (PSR B0531+21 and PSR B1937+21) are used to verify the algorithm’s performance. The simulation results show that the method satisfies the application requirements in the aspects of SNR and profile fidelity. By processing the data collected by the Rossi X-Ray Timing Explorer (RXTE) satellite in space, similar results can also be achieved.

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