1 Receiving Ground-based VLF Transmissions with RPI on IMAGE Bodo W. Reinisch Environmental, Earth, and Atmospheric Sciences Department Center for Atmospheric.

Slides:

Advertisements

Similar presentations

Analog Communications

Advertisements

S Digital Communication Systems Multipath Radio Channel Addendum (extracts from J-P Linnartz: Wireless Communication CDROM)

Chapter 22 Electromagnetic Waves. Units of Chapter 22 Changing Electric Fields Produce Magnetic Fields; Maxwell’s Equations Production of Electromagnetic.

Using a DPS as a Coherent Scatter HF Radar Lindsay Magnus Lee-Anne McKinnell Hermanus Magnetic Observatory Hermanus, South Africa.

Radar Mapping. Electromagnetic EM Radiation Electric Field & Magnetic Field –Perpendicular to direction of propagation Explains light but is absolutely.

ECE 501 Introduction to BME

Ultrasound Medical Imaging Imaging Science Fundamentals.

How can we get a vertical profile of the wind in the atmosphere?

Stanford Wave Induced Particle Precipitation (WIPP) Code Prajwal Kulkarni U.S. Inan, T.F. Bell March 4, 2008 Space, Telecommunications and Radioscience.

Remote Sensing: John Wilkin Active microwave systems (4) Coastal HF Radar IMCS Building Room 214C ext 251 Dunes of sand.

1 Sounds of VLF Prepared by Morris Cohen and Nader Moussa Stanford University, Stanford, CA IHY Workshop on Advancing VLF through the Global AWESOME Network.

IVPR Team Meeting 21 Sep D Visualization Techniques in Support of Remote Sensing of Space Plasma Ivan A. Galkin UMASS Lowell.

Remote Sensing: John Wilkin Active microwave systems Coastal HF Radar IMCS Building Room 214C ph: Dunes of sand and seaweed,

SeaSonde Overview.

How can we get a vertical profile of the atmosphere?

Radio Communications J. C. Sprott Department of Physics University of Wisconsin - Madison Presented to Physics 208 on April 6, 2006

Communications IB physics.

COSC 393: Lecture 2 Radio Fundamentals.

Radar Principles and Systems Part I

HIAPER Cloud Radar Transceiver Exciter Receiver Oscillators High-Powered Amplifier Calibration Exciter Receiver Oscillators High-Powered Amplifier Calibration.

Review Doppler Radar (Fig. 3.1) A simplified block diagram 10/29-11/11/2013METR

Stuart D. BaleFIELDS iCDR – Science Requirements Solar Probe Plus FIELDS Instrument CDR Science and Instrument Overview Science Requirements Stuart D.

Ionospheric-magnetospheric VLF Wave Propagation: RPI/IMAGE-HAARP Correlative Study RPI/IMAGE-HAARP Correlative Study V. Paznukhov, B. Reinisch, G. Sales,

1 ECE 480 Wireless Systems Lecture 3 Propagation and Modulation of RF Waves.

Wannalancit Stairs, Lowell (1830) Ivan Galkin University of Massachusetts Lowell Department of Physics Center for Atmospheric Research Domain Ontology.

Astrophysics Seminar October 2004 R. L. Mutel (& D. Menietti) University of Iowa Fine Structure in Auroral Kilometric Radiation: Evidence for Electromagnetic.

Remote Radio Sounding Science For JIMO J. L. Green, B. W. Reinisch, P. Song, S. F. Fung, R. F. Benson, W. W. L. Taylor, J. F. Cooper, L. Garcia, D. Gallagher,

20 September 2005Double Star -Cluster Noordwijk Sept WBD Studies of AKR: Coordinated Observations of Aurora and the SAKR – Ion Hole Connection R.

Stuart D. BaleFIELDS iPDR – Science Requirements Solar Probe Plus FIELDS Instrument PDR Science and Instrument Overview Science Requirements Stuart D.

Pavel Ozhogin, Paul Song, Jiannan Tu, and Bodo W. Reinisch Center for Atmospheric Research, University of Massachusetts Lowell, MA AGU Fall 2012.

STAMMS Conference Meeting, Orleans, France May 2003 R. L. Mutel, D. A. Gurnett, I. Christopher, M. Schlax University of Iowa Spatial and Temporal Properties.

EECE 252 PROJECT SPRING 2014 Presented by: Peizhen Sun Nor Asma Mohd Sidik.

Plasma Density Structures in the Inner Magnetosphere Derived From RPI Measurements B. Reinisch 1, X. Huang 1, P. Song 1, J. Green 2, S. Fung 2 V. Vasyliunas.

Communications Systems. 1Analogue modulation: time domain (waveforms), frequency domain (spectra), amplitude modulation (am), frequency modulation (fm),

Technician License Course Chapter 2 Radio and Electronics Fundamentals

Andy French December 2009 A bluffer’s guide to Radar.

Mobile Computing and Wireless Networking Lec 02

Zoë C. Dent 1, I. R. Mann 1, F. W. Menk 2, J. Goldstein 3, C. R. Wilford 4, M. A. Clilverd 5, L. G. Ozeke 1, B. W. Reinisch 6 Magnetospheric plasma density.

Basics Modulation Multiple Access

Beam-plasma interaction in randomly inhomogeneous plasmas V. Krasnoselskikh (1), V. Lobzin (1,3), Musatenko K. (1,2), J. Soucek (4), J. Pickett (5), I.

COMMUNICATION SYSTEMS (5marks)

Simulations of Radio Imaging in the Earth’s Magnetosphere J. L. Green, S. Boardsen, W. W. L. Taylor, S. F. Fung, R. F. Benson, B. Reinisch, and D. L. Gallagher.

Review Doppler Radar (Fig. 3.1) A simplified block diagram 10/29-11/11/2013METR

Ionospheric HF radars Pasha Ponomarenko. Outline Conventional radars vs ionospheric radars Collective scatter processes Aspect angle effects HF propagation.

Overview of Results from the Radio Plasma Imager (RPI) on IMAGE James L. Green Space Science Data Operations Office Goddard Space Flight Center LEP Seminar.

Radio Sounding of the Near-Sun Plasma Using Polarized Pulsar Pulses I.V.Chashei, T.V.Smirnova, V.I.Shishov Pushchino Radio Astronomy Obsertvatory, Astrospace.

Prof. Nizamettin AYDIN Advanced Digital Signal Processing 1.

Stuart D. BaleFIELDS SOC CDR – Science Requirements Solar Probe Plus FIELDS SOC CDR Science and Instrument Overview Science Requirements Stuart D. Bale.

Solar observations with single LOFAR stations C. Vocks 1. Introduction: Solar Radio radiation 2. Observations with single LOFAR stations 3. Spectrometer.

Overview of Results from the Radio Plasma Imager (RPI) on IMAGE James L. Green and Bodo W. Reinisch Presentation at Yosemite February 6, 2002.

1 EMLAB EM wave propagation. 2 EMLAB Impulse response Time Radio Propagation : physical model 안테나에서 나온 신호는 지형지물과 반사, 투과, 산란을 거치면서 다양한 진폭과, 시간 지연을 갖는 신호들로.

1) By using hamming code (even – parity), Show the correct binary number that transmitted by the sender if the receiver received binary number.

CAP congress, Ottawa, June 13-17, 2016

Antennas and Propagation

Visit for more Learning Resources

Sky Wave Propagation.

Solar Probe Plus FIELDS Instrument PSR - MEP Introduction

The Earth is {image} meters from the sun

Doppler Radar Basics Pulsed radar

Small-Scale Characteristics of 45 GHz Based on Channel Measurement

COMMUNICATION SYSTEMS

W. Kurth & D. Kirchner The University of Iowa 11 Jan. 2011

Communication Systems.

Energy in EM Waves: The Poynting Vector

WHISTLER AND Z-MODE ECHOES FROM RADIO SOUNDING ON THE IMAGE SATELLITE

What should you do if another operator reports that your station’s 2 meter signals were strong just a moment ago, but now they are weak or distorted? A.

Mobile Communications Systems ECE IV Year I Sem

Radio Technology in Space Explorations

Radio Technology in Space Explorations

Presentation transcript:

1 Receiving Ground-based VLF Transmissions with RPI on IMAGE Bodo W. Reinisch Environmental, Earth, and Atmospheric Sciences Department Center for Atmospheric Research University of Massachusetts Lowell AFRL Hanscom AFB 19 December 2002

2 IMAGE Spacecraft 500-m dipoles in spin plane 20-m dipole along z <10 W radiated power 3 kHz – 3 MHz 300 Hz bandwidth

3 Cavity

4 Overview of Radio Plasma Imager (RPI) RPI transmits coded EM waves and receives echoes at 3 kHz to 3 MHz –Uses advanced digital processing techniques (pulse compression & spectral integration) RPI uses a tri-axial orthogonal antenna system –500 meter tip-to-tip X and Y axis dipole antennas –20 meters tip-to-tip Z axis dipole antenna –X axis antennas are used for transmissions –Echo reception on all three Basic RPI measurements of an echo at a selected frequency –Amplitude –Time delay (distance or range from target) –Direction of arrival –Wave polarization (ordinary or extra-ordinary) –Doppler Spectrum In situ density and resonances measurements

5 RPI Block Diagram

6 Transmission with Tuned Antennas

7 RPI Specifications

8 Local plasma resonances X- mode echo trace Sounding in the Polar Cap S/C Z trace

9 Field-Aligned Propagation Plasmagram [Reinisch et al., GRL, 4521, 2001] SX from southern HP NX from northern HP SX+NX double reflection Recalculated Echo traces Plasma resonances

10 Empirical Magnetospheric Density Distribution Average L = June LT March LT

11

12

13 05 Apr 2001

14

15 Seattle, NLK 24.8

16 Seattle, NLK 24.8

17 Seattle, NLK 24.8

18 Maine, NAA 24.0

19 Australia NSW 19.8 Maine NAA 24.0

20 Backup

21 Antenna Coordinates and Wave Polarizations

22 Quadrature Samples

23 The Wave Normal

24 Wind – RPI

25 Signal Transmitted by RPI Signal Received by WBD IMAGE to Cluster Radio Wave Transmission Experiment, 23 April 2002 Received Waveform with Fitted Pulse and Background Levels 04:44:3704:44:3904:44:4104:44:43 E (microvolts / m) E (microvolts / m) SC2 Salsa SC3 Samba Spectrograms of Received Signal at Each Spacecraft 04:41:0004:41:30 04:42:00 04:42:30 04:43:00 04:43:30 04:44:0004:44:30 Ez Freq [kHz] Ez Freq [kHz] Ez Freq [kHz] Ey Freq [kHz] V 2 m -2 Hz -1 SC4 Tango SC3 Samba SC2 Salsa SC1 Rumba Relative positions roughly to scale University of Iowa Funding for this experiment provided by NASA

26

27 RPI Specs