Individual T/R module characterisation of the TerraSAR-X active phased array antenna by calibration pulse sequences with orthogonal codes

Bräutigam, Benjamin; Schwerdt, Marco; Bachmann, Markus; Stangl, Martin

doi:10.1109/igarss.2007.4424034

Cited by 42 publications

(18 citation statements)

References 4 publications

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“…또한, 다수의 수신 채널이 존재하기 때문에, 수신 채널 간의 위상 및 크기에 대한 보정이 점점 중 요한 요소가 되고 있다. PN(Pseudorandom Noise) 코 드를 이용한 레이더 송신 및 수신 채널 보정 방법 등 최근의 연구 결과를 보면, 기존에 하드웨어적으로 보정하는 방식이 소프트웨어 기반의 보정 방식으로 바뀌고 있다 [10] . Table 2.…”

Section: ⅰ 서 론 Rf 전단(Front-end)에서 시작해서 Adc(analog Tounclassified

Design and Measurement of Active Phased Array Radar Digital Receiver

Kim

Lee²,

Lee³

et al. 2011

The Journal of Korean Institute of Electromagnetic Engineering

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Active phased array antenna structure is used for modern multi-function radars. To search targets in high clutter environment, the radar receiver needs high dynamic range performance. Though active phased array antenna structure lead to increase of SNR, the SFDR is not increased. In this paper, high SFDR receiver of X-band active phased array radar was designed and manufactured. One channel digital receiver is connected to 32 T/R modules and one PCB assembly is composed to 2 channel digital receivers with RF part, ADC part, LO distribution part and digital down conversion part. A commercial FIFO board was used for digital receiver measurement about major performance in digital output signal condition. The measured digital receiver gain and SFDR is 33 dB and more than 81 dBc each.

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Section: ⅰ 서 론 Rf 전단(Front-end)에서 시작해서 Adc(analog Tounclassified

Design and Measurement of Active Phased Array Radar Digital Receiver

Kim

Lee²,

Lee³

et al. 2011

The Journal of Korean Institute of Electromagnetic Engineering

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“…An important input to the model are the actual beam coefficients of the active phased array which can be monitored in-orbit using the novel T/R Module Characterisation Method [8]. Beyond these capabilities the antenna model also features a tool for generating optimised beam coefficients under given constraints.…”

Section: Antenna Performance Monitoringmentioning

confidence: 99%

“…Thus, a strategy for an efficient but robust calibration approach has been developed. Furthermore, by applying the novel T/R Module Characterisation Method [7,8], the actual antenna settings will be derived in orbit. Individual and simultaneous monitoring of all T/R modules is possible in-flight under the most realistic instrument conditions.…”

Section: Strategymentioning

confidence: 99%

Results from TerraSAR-X geometric and radiometric calibration

Bräutigam

Schwerdt

Bachmann

et al. 2007

IET International Conference on Radar Systems 2007

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As TerraSAR-X, due for launch in June 2007, will be an operational scientific mission with commercial potential, product quality is of crucial importance. The success or failure of the mission essentially depends on the calibration of the TerraSAR-X system ensuring the product quality and the correct in-orbit operation of the entire SAR system. This paper describes the calibration procedures for TerraSAR-X and the dedicated activities to be performed during the five months commissioning phase. Results from on-ground tests are discussed with respect to geometric and radiometric calibration of the TerraSAR-X system.

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“…전자, 전기, 통신 기술 등 전분야 과학 기술이 발 전 함에 따라 크기가 작고 소모 전력이 적은 디지 털 칩들이 개발되면서 작고 최적의 성능을 내는 수 신기에서 많은 부분을 디지털 소자들이 담당하고 있다 [6][7][8] . …”

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System Design and Evaluation of Digital Retrodirective Array Antenna for High Speed Tracking Performance

Ryu¹

2013

The Journal of Korea Information and Communications Society

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The retrodirective array antenna system is operated faster than existing techniques of beamforming due to its less complexity. Therefore, it is effective for beam tracking in the environment of fast vehicle. On the other hand, it also has difficulty in estimating AOA according to multipath environment or multiuser signals. To improve the certainty of estimating AOA), this article proposes hybrid digital retrodirective array antenna systme combined with MUSIC algorithm. In this paper, the digital retrodirective array antenna system is designed according to the number of antenna array by using only one digital PLL which finds angle of delayed phase.And we evaluate the performance of the digital retrodirective array antenna for the high speed tracking application. Performance is studied by simulink when the speed of mobile is 300km/h and the distance between transmitter and receiver is 100m and then we have to confirm the performance of the system in multi path environment. As a result, the mean of AOA (Angle Of Arrival) error is 4.2° when SNR is 10dB and it is 1.3° when SNR is 20dB. Consequently, the digital RDA shows very good performance for high speed tracking due to the simple calculation and realization.

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Individual T/R module characterisation of the TerraSAR-X active phased array antenna by calibration pulse sequences with orthogonal codes

Cited by 42 publications

References 4 publications

Design and Measurement of Active Phased Array Radar Digital Receiver

Design and Measurement of Active Phased Array Radar Digital Receiver

Results from TerraSAR-X geometric and radiometric calibration

System Design and Evaluation of Digital Retrodirective Array Antenna for High Speed Tracking Performance

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