INDRA: The Indonesian Maritime Radar

Lestari, A.A.; Hakkaart, P.; Zijderveld, J.H.; Zwan, Fred van der; Hajian, M.; Ligthart, L.P.

doi:10.1109/eumc.2008.4751777

Cited by 14 publications

(4 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…INDERA is the first Indonesian FMCW maritime radar developed jointly by RCS and IRCTR -TU Delft [3,4]. INDERA was built with an ability to detect and measure the distance of a vessel using very low transmit power.…”

Section: Resultsmentioning

confidence: 99%

Method of measuring Doppler shift of moving targets using FMCW maritime radar

Sediono

2013

Proceedings of 2013 IEEE International Conference on Teaching, Assessment and Learning for Engineering (TALE)

View full text Add to dashboard Cite

Abstract-During the operation of an FMCW (frequency modulated continuous wave) maritime radar, the system transmits a continuous radio energy with a frequency modulated by a triangular or sawtooth-shaped signal. As a result, the frequency of the transmitted signal varies gradually with time. When the signal is reflected by an object, the received waveform will build up a delayed replica of the transmitted waveform, with the time delay as a measure of the target range. If the target is moving, the radar system will register a Doppler shift within the received signal. Compared to the frequency of the emitted signal, the received signal will show a higher frequency when the target is approaching and a lower frequency when the target is moving away from the radar location. Thus, the total Doppler shift may result from the superposition of both source and observer motions. Specifically, the amount of Doppler shift is directly proportional to the radial speed of the target. The Doppler shift can be determined after performing the range Fourier transform (range FFT) first. For a target of interest, we can repeat the range FFT until we have enough data to perform the second level of FFT. The result of this second FFT is a two dimensional complex valued matrix, whose spectral peak corresponds to the Doppler shift of the moving target. This method is known as Doppler FFT. Some results of the measurement of target speed using this method are presented in this paper.

show abstract

Section: Resultsmentioning

confidence: 99%

Method of measuring Doppler shift of moving targets using FMCW maritime radar

Sediono

2013

Proceedings of 2013 IEEE International Conference on Teaching, Assessment and Learning for Engineering (TALE)

View full text Add to dashboard Cite

show abstract

“…As a tropical country, Indonesia has a fairly high intensity of UV radiation with temperatures reaching 39.5 o , humidity rate of 87%, and has a relatively high annual rainfall of 3,548 mm [7][8][9]. Besides that, Indonesia is the country with the second longest coastline in the world with a length of more than 81000 km which makes the use of insulators especially in coastal areas is very crucial thing as result of high levels of sea salt pollution [10]. This paper will analyze the selection of insulators in the Sumatran region assuming that in there will be built high voltage transmission line of 500 kV.…”

Section: Data and Analysismentioning

confidence: 99%

Determination of Appropriate Overhead Line Insulator in Sumatra due to Contamination Severity

Zaeni

Khayam

Viviantoro

2019

EECSI

View full text Add to dashboard Cite

Insulator is one of the important equipment to support electrical power delivery which flow through the transmission line. Considering its very important role, the selection of insulators must be certainly based on deep analysis so that the insulator we choose works properly. There are several standards that can be used in selecting isolators, but in this paper the standards that will be used for case study analysis are IEC and IEEE standards. Case studies that will be used for the selection of insulators are for Sumatra that located in Indonesia which is a tropical country and certainly has special environmental characteristics that can influence the selection parameters of an insulator. There are several parameters that are commonly used in selecting overhead isolators those are power frequency voltage, environmental condition (contamination), switching over voltage, and lightning over voltage. Using environmental condition, it is found that the pollution category of Sumatra area is heavy, which influence the selection of insulation material.

show abstract

“…Dalam rangka memenuhi kebutuhan akan Radar untuk Indonesia, maka terjalinlah kolaborasi antara PPET-LIPI, UI, IRCTR-TU Delft dan institusi lainnya dalam pembuatan radar pertama buatan Indonesia yang dinamakan dengan INDRA (Indonesian Radar) [1] dan ISRA (Indonesian Surveillance Radar) [2].…”

Section: Iunclassified

“…Antena yang telah didesain untuk ISRA telah berkembang dan ada yang berupa antena mikrostrip [1], [3] dan ada juga antena yang berupa waveguide slot [4]. Antena mikrostrip pada [1] dan [3] dicatu secara langsung dengan saluran pencatu di bidang yang sama dengan patch antena sehingga ini dapat mempengaruhi unjuk kerja dari antena. Sidelobe level pada [3] juga masih sebesar 9,7 dB.…”

Section: Iunclassified

Pengembangan Antena Mikrostrip Susun untuk Radar Pengawas Pantai

Zulkiflia

Wahyu

Basari

et al. 2016

indones.j.electron.telecommun.

View full text Add to dashboard Cite

Makalah ini membahas pengembangan antena mikrostrip yang disusun secara linier sebanyak empat elemen untuk aplikasi radar pengawas pantai. Teknik pencatuan yang digunakan untuk mencatu antena susun ini adalah proximity coupled. Desain antena menggunakan software CST microwave studio dan dirancang untuk bekerja di frekuensi 9,4 GHz. Hasil simulasi memperlihatkan impedance bandwidth antena pada return loss ≤ -9,54 dB adalah 760 MHz dari 9,34-10,1 GHz dan dari hasil ukur adalah 860 MHz dari frekuensi 9,35-10,21 GHz. Di samping itu, hasil simulasi menunjukkan half power beamwidth (HPBW) pada phi=0 sebesar 23,7o dengan sidelobe level (SLL) sebesar -12,03 dB, sementara pada phi=90 diperoleh HPBW sebesar 77,2o dengan SLL tertekan sampai -19,78 dB. Sebagai tambahan, gain dari antena diperoleh sebesar 11,33 dB. Adapun hasil pengukuran menunjukkan hasil HPBW pada phi=0 sebesar 20o dengan SLL sebesar -18,9 dB dan pada phi=90 diperoleh HPBW sebesar 65o dengan SLL -15,51 dB.

show abstract

INDRA: The Indonesian Maritime Radar

Cited by 14 publications

References 0 publications

Method of measuring Doppler shift of moving targets using FMCW maritime radar

Method of measuring Doppler shift of moving targets using FMCW maritime radar

Determination of Appropriate Overhead Line Insulator in Sumatra due to Contamination Severity

Pengembangan Antena Mikrostrip Susun untuk Radar Pengawas Pantai

Contact Info

Product

Resources

About