Link Budget Analysis &amp;amp;verifications for system design of GPR

Keceli, S. Ilhan; Ozbey, Taha; Ari, Onur; Sutcuoglu, Ozgur

doi:10.1109/irs.2015.7226238

Cited by 4 publications

(3 citation statements)

References 1 publication

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“…The work in [5] presents an Ultra-Wide Band (UWB) system in which all link budget parameters have been calculated, such as antenna gain, transmitter power, output power, maximum receiver input power, and receiver noise level. All the parameters above are dependent on the environment in which the devices are located.…”

Section: Related Workmentioning

confidence: 99%

Development of a Script to Calculate MW Link Budget Using Tkinter in Python

Zarkadas,

Smyrnaios,

Dimitrakopoulos

2024

Preprint

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It is well-known that simulation tools are essential for the design and optimization of wireless communication systems. In this paper proposes a python script that can be used for planning and predicting a connection link budget by analyzing its basic parameters. Our proposal consists of an application that calculates the connection budget for point-to-point links operating at 5 GHz, taking into account all the necessary microwave parameters. For validating the efficiency of the proposed tool, the paper presents comprehensive simulation results derived from comparing our tool to a couple of other simulation tools by means of calculating the same parameters.

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Section: Related Workmentioning

confidence: 99%

Development of a Script to Calculate MW Link Budget Using Tkinter in Python

Zarkadas,

Smyrnaios,

Dimitrakopoulos

2024

Preprint

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“…For example, [3] uses a figure of merit based on gain, bandwidth, and size to compare various antennas for GPR. Gain and bandwidth requirements are focussed on because they relate to the most fundamental specifications given to a system designer: power, frequency, and link budget [4,5]. However, an antenna that satisfies these generic requirements is not guaranteed to perform well in a GPR imaging scenario.…”

Section: Introductionmentioning

confidence: 99%

System‐based specifications for better design of ground‐penetrating radar antennas

Wagner

Hossain

Pancrazio

et al. 2023

IET Microwaves Antenna & Prop

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Currently, no publicly available comprehensive set of specifications exists for the design of ground‐penetrating radar antennas. Specifications are presented and derived for the design of a ground‐penetrating radar antenna based on the antenna's interaction with the rest of the radar system. Typically, ground‐penetrating radar antenna engineers are given basic parameters such as gain and bandwidth to design an antenna. An antenna can be designed to meet those specifications but may not perform well in a ground‐penetrating radar imaging system. By considering the whole system, including the operation parameters, expected targets, and signal processing algorithms, we can constrain the less‐commonly considered performance aspects of an antenna to perform more reliably in a deployment. We propose quantitative specifications for the antenna's coupling, beamwidth, boresight radar cross‐section, pulse integrity, residual ringing, and front‐to‐back ratio. Meeting these antenna specifications will decrease the probability that a deficiency in the antenna design impacts the radar's image output. Finally, a summarised design equation table that will be helpful in the ground‐penetrating radar antenna community at large is offered.

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“…The manifestation of these variations is equivalent to amplitude and frequency modulation to the carrier signal, and the effects to the telemetry (TM) link must be considered . There were also some other related works to analyze a dynamic link budget, but no one considered a spinning satellite and the resulting effects on the electronics. Part of our evaluation process was the characterization of the antenna far‐field pattern on a radio frequency (RF) mock‐up and the dynamic link budget analysis utilizing the measurement results and the mission‐specific parameters, such as the type of orbit and spacecraft altitude and attitude profiles.…”

Section: Introductionmentioning

confidence: 99%

Dynamic link analysis and its in‐orbit verification on a spin‐stabilized satellite mission Eu:CROPIS

Drobczyk

Budroweit

2020

Satell Commun Network

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In this paper, we present the in-orbit verification of a dynamic link budget approach for the communication link of the Eu:CROPIS (Euglena and Combined Regenerative Organic-Food Production in Space) satellite. Because of the high satellite spin rates of up to 30 rpm, the satellite antennas radio frequency beam becomes strongly dynamic, consisting of fast amplitude variations and phase rotations. Both effects degrade the link quality and might lead to an abort of the communication. The paper presents an accurate method of how to simulate these dynamic effects and examines the simulation outputs with real in-orbit measurements. Both results are compared with each other, and deviations are discussed. K E Y W O R D S analysis and verification, communication link emulation, dynamic link budget, in-orbit verification, spinning satellite 1 | INTRODUCTION This paper presents the in-orbit verification of a dynamic link budget approach for the satellite mission Eu:CROPIS (Euglena and CombinedRegenerative Organic-Food Production in Space) and is an extension of the work presented in recent publications. 1,2 Eu:CROPIS is a spinstabilized satellite, which simulates the gravitational fields of the Moon and Mars for biological on-board experiments. 3 For this reason, one key driver of the Eu:CROPIS satellite is the attitude profile to emulate the required gravity forces. This is achieved via spin-stabilization around the zaxis and a maximum rotation of up to 30 rpm. The z-axis is sun-pointing, sun-synchronous orbit. Moreover, a challenging issue with respect to the communication link is the sun pointing of the spacecraft, which does not allow pointing the antennas towards Earth during ground station contacts. This involves attitude-independent and omnidirectional antenna coverage for the communication link. Both of these aspects lead to fastchanging link conditions during communication, inducing amplitude variations and phase rotations depending on the selected antenna type and its position on the spacecraft structure. Thus, a more detailed analysis is required to reproduce and analyze these effects on the spacecraft and ground station electronics, compared with a state-of-the-art static link budget analysis in accordance with the previous study. 4 The theory for the static link budget calculation can be derived from other studies. 5,6 The mathematical background for the rotational effects was already well described in previous works, 7-9 but it has not been fully simulated and verified in-orbit for a real satellite mission in low earth orbit. Our previous works 1,2 included the characterization of the antenna far-field pattern focusing on the interactions with the satellite structure. Those results are extracted to a mission orbit simulation tool and the end-to-end tests on-ground, with respect to the dynamic link variation, mainly induced by the fast rotation of the antennas and their influence to the functionality of the affected electronics. The effects can have direct impact on the binary phase-shift keying demodulation, a...

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Link Budget Analysis &verifications for system design of GPR

Cited by 4 publications

References 1 publication

Development of a Script to Calculate MW Link Budget Using Tkinter in Python

Development of a Script to Calculate MW Link Budget Using Tkinter in Python

System‐based specifications for better design of ground‐penetrating radar antennas

Dynamic link analysis and its in‐orbit verification on a spin‐stabilized satellite mission Eu:CROPIS

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