The Power Gain Difference Method Analysis

Veselý, Jiří; Hubacek, Petr; Olivová, Jana

doi:10.3390/s20113018

Cited by 3 publications

(2 citation statements)

References 29 publications

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“…The approach based on CRLB theory is used for analyzing the accuracy of the InA method in the presence of noise. According to [ 22 , 23 , 24 ], it is possible to determine the covariance matrix

of the InA method as

where

is Jacobian Matrix. It consists of partial derivatives of the function

with respect to the variables T R1 to T R3 at the point

.…”

Section: Accuracy Analysis Of the Ina Localization Methodsmentioning

confidence: 99%

Radar Position Estimation by Sequential Irradiation of ESM Receivers

Hubacek

Veselý

Olivová

2021

Sensors

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In this article, a new technique for determination of 2D signal source (target) position is proposed. This novel approach, called the Inscribed Angle (InA), is based on measuring the time difference of sequential irradiation by the main beam of the target antenna’s radiation pattern, using Electronic Support Measures (ESM) receivers, assuming that the target antenna is rotating and that its angular velocity is constant. In addition, it is also assumed that the localization system operates in a LOS (Line of Sight) situation and that three time-synchronized sensors are placed arbitrarily across the area. The main contribution of the article is a complete description of the proposed localization method. That is, this paper demonstrates a geometric representation and an InA localization technique model. Analysis of the method’s accuracy is also demonstrated. The time of irradiation of the receiving station corresponds to the direction in which the maximum received signal strength (RSS) was measured. In order to achieve a certain degree of accuracy of the proposed positioning technique, a method was derived to increase the accuracy of the irradiation time estimation. Finally, extensive simulation was conducted to demonstrate the performance and accuracy of our positioning method.

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“…The approach based on CRLB theory is used for analyzing the accuracy of the InA method in the presence of noise. According to [ 22 , 23 , 24 ], it is possible to determine the covariance matrix

of the InA method as

where

is Jacobian Matrix. It consists of partial derivatives of the function

with respect to the variables T R1 to T R3 at the point

.…”

Section: Accuracy Analysis Of the Ina Localization Methodsmentioning

confidence: 99%

Radar Position Estimation by Sequential Irradiation of ESM Receivers

Hubacek

Veselý

Olivová

2021

Sensors

Self Cite

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“…By using acoustic and even optical indicators, the operator can measure the size of the signal repeated pulses, while timing the length of the rotation of the RTD's antenna. The type of the RTD can be then determined from this information [28].…”

Section: Testing Receptionmentioning

confidence: 99%

Development of a Remote-Controlled Electrical Interference Vehicle with a Magnetron

Popela

Leuchter

Olivová

et al. 2020

Sensors

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This paper describes the design and construction of a remotely controlled mobile interference device designed primarily for interference (jamming) and immunity testing of wireless sensors operating in the 2.4 GHz band (Wi-Fi). The main idea was to build a remotely controlled test device to test the immunity of wireless sensors operating in the 2.4 GHz band directly in field conditions. The remotely controlled mobile interference device is equipped with a special interference apparatus, using a special magnetron tube as a source of interference. Magnetron was selected due to its high performance, allowing interference with wireless sensors over long distances. As magnetron is powered by high voltage (3 kVDC) and is being used in a remotely controlled device, it was important to solve the issue of its power supply using an accumulator. The remotely controlled device was further equipped with the option of detecting and analysing signals in the frequency band of 1 GHz to 18 GHz, adding an extra operational mode that can be used in civil (commercial), industrial, and military applications. Detection and analysis of extraneous signals that may affect our various electronic devices, operating in the 1 GHz to 18 GHz frequency band, is very important. By detecting and analyzing the detected signal, it is possible to recognize what kind of foreign device is transmitting on the detected frequency and how much it can affect the proper functioning of our electronic devices. All the individual parts of the remotely controlled mobile interference device are described in this article in detail, including their optimization for maximum use of the accumulator capacity by which the remotely controlled mobile interference device is powered. A substantial part of this article is devoted to optimizing the interference apparatus power supply with a resonant converter and internal intelligence, where the accumulators’ capacity is measured to gain needed predictions for maximum use of Li-Po batteries and thus extending its time of use.

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Capability of a Ground-Based Passive Surveillance System to Detect and Track Spaceborne SAR in LEO Orbits

2022

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Monitoring the Earth’s surface from the low Earth orbit (LEO) by synthetic aperture radar (SAR) provides meaningful information about a number of human activities such as the ecosystem, agriculture, and of course security matters. During its operation in LEO orbits, spaceborne SAR, at altitudes between 200 km and 2000 km, inherently emit electromagnetic signals toward the Earth’s surface. It has been experimentally verified that it is possible to detect and intercept spaceborne SAR signals at a distance of hundreds of kilometers by a single electronic support measure (ESM) non-comms sensor, placed on the Earth’s surface. The work described in this document is a follow-up to the paper and describes the principle of a new non-cooperative passive tracking method of spaceborne SAR carriers, tracked by four ground-based passive ESM non-comms sensors. These sensors used the time difference of arrival (TDOA) method in order to determine the current spaceborne SAR position in LEO orbits. Simulations were performed to assess the impact of ESM sensor configurations on the SAR’s signal interception and positioning error. The simulation results showed that the proposed method is sufficient to detect a spaceborne SAR position in LEO.

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The Power Gain Difference Method Analysis

Cited by 3 publications

References 29 publications

Radar Position Estimation by Sequential Irradiation of ESM Receivers

Radar Position Estimation by Sequential Irradiation of ESM Receivers

Development of a Remote-Controlled Electrical Interference Vehicle with a Magnetron

Capability of a Ground-Based Passive Surveillance System to Detect and Track Spaceborne SAR in LEO Orbits

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