Projekta apakšvirziens:

Projekta apakšvirziens:Ekstrēmi precīzu (pikosekunžu) laika mērījumu sistēmu izveidošana un tās darbības aprobācija tautsaimniecībā

Laika notikumu reģistrācijas un mērīšanas sistēmas prototipu aprobācija dažādos reāliem

apstākļiem pietuvinātos scenārijos, kur nepieciešama pikosekunžu precizitāte

Projekts Nr.2. “Inovatīvas signālapstrādes tehnoloģijas viedu un efektīvu elektronisko sistēmu radīšanai”

2013.gads:

Armands Mezeriņš VPP IMIS Seminārs 30/10/2013

Laika notikumu reģistrācijas tehnoloģijas pamati un realizācijas (2010 – 2012)

… (j-1) j (j+1) (j+2) …

Event

Derived analog signal

Sampling pulses

Processed samples

Event true time

Estimated event time

Constant valueTime scale

… (j-1) j (j+1) (j+2) …

Event


Sampling pulses

Processed samples

Event true time


Constant value

… (j-1) j (j+1) (j+2) …

Event


Sampling pulses

Processed samples

Event true time


Constant valueTime scale

Shaper A/D converter

FIFO memory

PC-aided signal

processing

Control circuit

Master Clock

Time-tags Events


Data

Control

Time diagram Block diagram

2Armands Mezeriņš VPP IMIS Seminārs 30/10/2013

Event Timer A033-ET Event Timer A033-ET/usb

Event Timer A093-ET module

Resolution: 3 ps RMS

Maximum rate: 20 MSPS

Average rate: 30 KSPS

PC interface: Parallel Port

Size; power 367x90x265; 21 W



Average rate: 1.2 MSPS

PC interface: USB2

Size; power 130x110x20; 6 W



Average rate: 1.3 MSPS

PC interface: USB2

Size; power 367x90x265; 24W

In 2011 under Licensee Agreement the rights for manufacturing and distributing of A033-ET are transferred to Eventech Ltd (Latvia).

#2

Pētījumu galvenie virzieni izpildei 2013. gadā


The main object of this year activity is to show real applications for event timing systems requiring the picosecond precision for time measurements:

1. Satellite Laser Ranging and Laser Time Transfer (collaborations with LU AI, China Academy of Sciences, Japan NICT);

2. Multifunctional Time Analyzer (researches with Military University of Technology in Poland);

3. LIDAR and 3-D scan systems (collaborations with Canadian specialist);

4. Free-Falling Absolute Gravimeters (researches with Finland, Russia, China);

5. Single Photon Counting Systems (researches with HORIBA Jobin Yvon in Scotland).

#3

1a. Satellite Laser Ranging and Laser Time Transfer

Low frequency Satellite Laser Ranging


Collaboration with Institute of Astronomy and Institute of Geodesy and Geoinformatics of Latvian University

Input A

Input B

ArmingSTART reading and GATE prediction

GATE writing

STOP-s reading and range bias plotting

Arming

Ranging period = 100 ms

START

GATE

STOP

Returned light pulse

Pulse for shape characte-rization

Input A

Input B

ArmingSTART reading and GATE prediction

GATE writing

STOP-s reading and range bias plotting

Arming

Ranging period = 100 ms

START

GATE

STOP

Returned light pulse

Pulse for shape characte-rization

Time diagram of ranging process

#4

1b. Satellite Laser Ranging and Laser Time Transfer

High frequency Satellite Laser Ranging


Input A

Input B

Arming Continuous timing data reading, GATE prediction for START pulses, GATE control and range bias plotting

Ranging period

START

GATE

STOP

i i+1 i+2 i+81 i+82

ii-81 i-79i-80 i+2

Input GATE

Round trip time

Input A

Input B

Arming Continuous timing data reading, GATE prediction for START pulses, GATE control and range bias plotting

Ranging period

START

GATE

STOP

i i+1 i+2 i+81 i+82

ii-81 i-79i-80 i+2

Input GATE

Round trip time

A060-PG

Gate

Firing

10 MHz1 pps

A032-ET

PC

Start

Stop

A060

1

A032-ET

Sync

PC

Start

Stop

EPP

EPP

User-made application software

Gate

Firing

10 MHz1 pps

PC

Start

Stop

1Sync

PC

Start

Stop

EPP

EPP


Range Gate Generator

Event Timer

A060-PG

Gate

Firing

10 MHz1 pps

A032-ET

PC

Start

Stop

A060

1

A032-ET

Sync

PC

Start

Stop

EPP

EPP


Gate

Firing

10 MHz1 pps

PC

Start

Stop

1Sync

PC

Start

Stop

EPP

EPP


Sync

PC

Start

Stop

EPP

EPP


Sync

PC

Start

Stop

EPP

EPP


PC

Start

Stop

EPP

EPP


Range Gate Generator

Event TimerEvent Timer A033-ET

Three existing alternatives:

•get the START events from ET and and control GATE input and firing (Range Gate Generator, EDI);

•register the START event by simple timer (precision 0.5 ns) and control SPAD (Austria);

•control firing so that a corresponding STOP pulses hit to predicted GATE area (China).

Time diagram of ranging process

Block diagram

Almost of 50 % of Satellite Laser Ranging Stations in the world have Riga Event Timers

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1c. Satellite Laser Ranging and Laser Time Transfer

Laser Time Transfer


ΔT

Emitted pulse

up down

GT ST

ST

up down

Satellite time

Ground time

Received pulse

Returned pulse

1PPS

1PPS

ΔT

Emitted pulse

up down

GT ST

ST

up down

Satellite time

Ground time

Received pulse

Returned pulse

1PPS

1PPS

GSup TTT

Laser Time Transfer implementation in Shanghai SLR station(two Riga Event Timers)

Laser Time Transfer principle

Only the institutions of China Academy of Sciences bought 15 Event Timers A033-ET

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2a. Multifunctional Time Analyzer


Phase progression

Tim

e-st

am

ps

k

tkkT0

N0

AJkLinear fit

T0

tB

Phase progression

Tim

e-st

am

ps

k

tkkT0

N0

AJkLinear fit

T0

tB

Implicit jitter measurement

NktkTtAJ Bkk ,...,1,0),( 0

NkAJAJPJ kkk ,...,2,1;1

NkPJPJCJ kkk ,...,3,2;1

accumulated jitter function:

periodic jitter function :

cycle-to-cycle jitter function :

Explicit jitter measurement

PulseGenerator

Splitter

Time Analyzer A

InputTrigg

Time Analyzer B

InputTrigg

Trigg

Output

PC

Time registration

and data processing

Cable delay

PulseGenerator

Splitter

Time Analyzer A

InputTrigg

Time Analyzer B

InputTrigg

Trigg

Output

PC

Time registration

and data processing

PC

Time registration

and data processing

Cable delay

),cov(2 BATD

Jitter dependence on time interval for generator T5300U (produced in Poland)

Pulse generator jitter analysis

Jitter functions characterize modulation functions

#7

2b. Multifunctional Time Analyzer


Block-diagram

SAW function time-to-time presentation

Analogue signal analysis

Controller FPGA

Difference Amplifier

Pulse Shaper

Enable

Inp+

GND

Event Timer

Input A

Master CLK, sine

CLK

Input Trigg

Inp-

Input analog signal

Comparator

Analog Signal to Event Converter

Ref 10 MHz

To PC

Implementation

NktfAtr krrk ,...,2,1);2sin()(

SAW function spectrograms

#8

3. LIDAR and 3-D scan systems


“Proof of concept” of new developed LIDAR system is based on the Event Timer module. The development carried out in the framework of the investment project that is led by Canadian Technology Commercialisation Consultant Brent Gelhar.

LIDAR and 3-D laser scan systems find distances to surface of the object by timing the round-trip time of a pulse of light.

The main requirements are:• measurement resolution: +/- 2 mm• measurement rate: more than 100 KSPSEvent Timers with USB interface provides:• measurement resolution: better than 1 mm RMS and • measurement rate: more than 1 MSPSand can be successfully used for these tasks.

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4. Free-Falling Absolute Gravimeters


Picosecond laser diode

SPAD

Freely falling retroreflector

Reference retroreflector

Event Timer

controllight

lightlight

Picosecond laser diode

SPAD

Freely falling retroreflector

Reference retroreflector

Event Timer

controllight

lightlight

Typical structure of Gravimeter (MPG-2) Proposed structure of Gravimeter

Fringe frequency changes from 4 KHz up to 7 MHz at the end. Number of fringes about 1 million. Zero-crossing detection with precision 70 – 100 ps RMS (gravimeter FG5).

Event Timer with USB interface provides about 300 000 measurements. For ET 1 mm precision at distance 25 cm the relative error for g evaluation is 3.7E-6.

Presentation at IAG Symposium on Terrestrial Gravimetry (TG-SMM 2013, 17 – 20 September 2013, Saint Petersburg, Russia) called a great interest on the representatives from Finland, Russia, China

Laser

Photo detector

Freely fallingretroreflector

Referenceretroreflector

Time Analyzer

lens Beam splitter 1

fringes

CFD

Beam splitter 2

Collimator mirrorLaser

Photo detector

Freely fallingretroreflector

Referenceretroreflector

Time Analyzer

lens Beam splitter 1

fringes

CFD

Beam splitter 2

Collimator mirror

#10

5. Single Photon Counting Systems


Time-Correlated Single Photon Counting for fluorescence

time bins, 1 bin = 1 ps

number of intervals in one bin

FWHM = 6 ps;STD = 3.3 ps

Histogram of intervals measured by couple of Event Timers A033-ET

Distribution of measured intervals in

the range 100 ns. Relative error for

1 ps bins is 5 femtoseconds.

The experiments with a couple of Event Timers A033-ET, executed in request from the HORIBA Managing Director in Scotland Dr. David Mcloskey, show that Event Timers satisfy requirements of TCSPC method in repetition rate, resolution and linearity.

#11

Publicēti raksti: Rybakov. Reconstruction of the Corrective Component of the Transfer Function of the Interpolator in the process of Calibration of the Precision Event Timer,

Automatic Control and Computer Sciences, 2010, Vol. 44, No. 1, pp. 11–21. Rybakov, V. Vedin. Precision Event Timing Based on Digital Processing of the Responce of Harmonic Ocsillator, Automatic Control and Computer Sciences,

2010, Vol. 44, No. 6, pp. 338 – 347.Yu. Artyukh, I. Bilinskis, S. Roga, K. Sudars. Digital Representation of Analog Signals leading to their Energy-efficient Processing. Proceeding of Annual

International Conference on Green Information Technology, 25-26 October 2010, Singapore.K.Sudars. Data Acquisition Based on Nonuniform Sampling: Achievable Advantages and Involved Problems, Automatic Control and Computer Science, 2010,

Vol. 44, No. 4, pp. 199-207.I.Bilinskis, A.Skageris. Experimental Studies of Signal Digitizing Based on Sine-wave Reference Crossings, Electronics and Electrical Engineering, 2010, No

4(100), pp. 69-72.I.Bilinskis., K.Sudars, M.Min, P.Annus. “Advantages and limitations of an approach to bioimpedance data acquisition and processing relying on fast low bit rate

ADCs”, Proceedings of Baltic Electronic Conference BEC 2010, Tallinn, Estonia, 2010.I.Bilinskis, A.Skageris, K.Sudars. Method for Fast and Complexity-Reduced Asymmetric Image Compression, Electronics and Electrical Engineering, 2011, No.

4(110), pp.117-120.A.Rybakov, V.Vedin. Precise Measurement of Event Flow Time Coordinates Based on the Digital Processing of a Triggered Relaxation Oscillator Wave Train,

Automatic Control and Computer Sciences, 2011, Vol. 45, No. 3, pp. 162–173.A.S.Rybakov. Improvement of the Accuracy of the Temporal Position Estimation of the Gravity Center of an Analog Signal on the Basis of Discrete samples,

Automatic Control and Computer Sciences, 2011, Vol. 45, No. 6, pp. 301–313.Yu.Artyukh, E.Boole. Jitter Measurement on the Basis of High-precision Event Timer, Metrology and Measurement Systems, 2011, No.3, pp.453-460.Yu. Artyukh, V. Bespal’ko, E. Boole, Vedin, V. Main directions of Riga Event Timer development and current results, Proc. 17th International Workshop on Laser

Ranging, Bad Kotzting, Germany, May 16-20, 2011, 4 pages.V. Vedins, A. Mezeriņš. “Reliability enhancement of event timer calibration by using a dual PLL for the calibrating signal generation”. Proc. 13th Biennial Baltic

Electronics Conference (BEC2012), October 3-5, 2012, Tallin, Estonia, pp.113-114.Yu. Artyukh, E. Boole, J.Bule. “Determination of correction function for reducing integral non-linearity of DSP-based event timer.” Proc. 13th Biennial Baltic

Electronics Conference (BEC2012), October 3-5, 2012, Tallin, Estonia, pp.303-306.I.Bilinskis, K. Sudars, M. Min, “Method for Wideband Signal Digitizing and their Real-time Reconstruction in Enlarged Dynamic Range”, International conference

“Electronics 2012”, Palanga, Lithuania, 18-20 June 2012. I.Bilinskis, A.Skageris, K.Sudars, “Experimental Evaluation of Conditions for Short-Distance Transmission of Event Timing Data”, International conference

“Electronics 2012”, Palanga, Lithuania, 18-20 June 2012.Ribakov „Compression Functions Used in the Algorithms for the Estimation of Signal Arrival Time under High-Precision Event Timing” “Automatic Control and

Computer Sciences” Vol.46, Number 6, 2012 , Allerton Press, Inc. pp. 288-298. I.Bilinskis, A.Skageris, K.Sudars, “Experimen tal Evaluation of Conditions for Short-Distance Transmission of Event Timing Data” Electronics and Electrical

Engineering, Vol 19, No 4 (2013), lpp. 57-60. (ISSN: 1392-1215)V. A. Bespal’ko and A. S. Rybakov, “Correlation Method for Estimation of Event Timing Precision”, “Automatic Control and Computer Sciences” – AC&CS,

Allerton Press, Inc., Vol.47, Number 1, 2013, pp. 38-47. ·

Publikācijas 2010 - 2013

12Armands Mezeriņš VPP IMIS Seminārs 30/10/2013 #12

Accepted for publication:Bilinskis, E. Boole, A. Mezerins, V. Vedin. Alias-free compressed signal digitizing and recording on the basis of Event Timer. In Proc. 21st Telecommunications

Forum (TELFOR-2013) 26 – 28 November 2013, Belgrade, Serbia (accepted to publicate).V. Bespal’ko, E.Boole, V.Vedin, G.Ozolins. High precision event timing tehnology and possibility to use it in gravimeters. In Proc. of IAG Symposium on

Terrestrial Gravimetry (TG-SMM 2013), 17 – 20 September 2013, Saint Petersburg. (accepted to publicate)Rezultāti prezentēti starptautiskās konferencēs:The 14th International Conference “ELECTRONICS’2010”, 18-20 May 2010, Kaunas. I.Bilinskis, A.Skageris. Experimental Studies of Signal Digitizing Based on

Sine-wave Reference Crossings.Annual International Conference on Green Information Technology (GREEN IT 2010), 25-26 October 2010, Singapore. Yu. Artyukh, I. Bilinskis, S. Roga, K.

Sudars. Digital Representation of Analog Signals leading to their Energy-efficient Processing. Baltic Electronic Conference BEC 2010, Tallinn, Estonia, 4.-6. October 2010. I.Bilinskis I., Sudars K., Min M., Annus P., “Advantages and limitations of an

approach to bioimpedance data acquisition and processing relying on fast low bit rate ADCs”. The 15th International Conference “ELECTRONICS’2011”, 17-19 May 2011, Kaunas. I.Bilinskis, A.Skageris, K.Sudars. Method for Fast and Complexity-

Reduced Asymmetric Image Compression.17th International Workshop on Laser Ranging, Bad Kötzting (Germany), May 16-20, 2011. Yu.Artyukh, V.Bespal’ko, E.Boole, V.Vedin. Main Directions of Riga

Event Timer Development and Current Results.13th Biennial Baltic Electronics Conference (BEC2012), October 3-5, 2012, Tallin, Estonia, “Reliability enhancement of event timer calibration by using a dual

PLL for the calibrating signal generation” (A. Mezeriņš).13th Biennial Baltic Electronics Conference (BEC2012), October 3-5, 2012, Tallin, Estonia, “Determination of correction function for reducing integral non-

linearity of DSP-based event timer.” (J.Bule).WPLTN-2012 TECHNICAL WORKSHOP St. Petersburg, Russia, 24-28 September 2012. Y. Artyukh, V.Vedin, E. Boole, V. Bespalko, G. Ozolinsh, "Innovative

technology of event timer building"IAG Symposium on Terrestrial Gravimetry (TG-SMM 2013), 17 – 20 September 2013, Saint Petersburg, Russia. E. Boole, V. Bespalko, V.Vedin, G. Ozolinsh,

“High precision event timing tehnology and possibility to use it in gravimeters “ Patenti:• LR patents Nr. 14358 „Interpolācijas „laiks-kods” pārveidotāja kalibrēšanas metode” (LR PV Oficiālais vēstnesis 06/2011).• LR patents Nr. 14691, "Monostabils multivibrators". Izgudrotāji:V.Bespaļko, A.Mezeriņš. Īpašnieks: Elektronikas un datorzinātņu institūts. publicēts

20.09.2013.g.• 10.10.2013.g. iesniegts patenta pieteikums "Precīzu mērītāju gadījuma kļūdu novērtēšanas metode" Pietekuma Nr.P-13-151. Izgudrotāji: Vladimirs Bespaļko,

Aleksands Ribakovs,Jevgenijs Buls, Andrejs Skaģeris. Īpašnieks: Elektronikas un datorzinātņu institūts.Citi radītāji:• Izstrādāta konkurētspējīga inovatīva tehnoloģija “Augstas precizitātes laika momentu reģistrācija” bija prezentēta pasākumā “Commercialization Reactor”,

kas bija organizēts LIAA ar mērķi palīdzēt satikties zinātniekiem un uzņēmējiem.• Armands Mezeriņš “Ultrastabilais augsto frekvenču sintezators” - aizstāvēts maģistra darbs, Rīgas Tehniskā Universitāte, Elektronikas un Telekomunikāciju

fakultāte, 2011. gads, jūnijs, vadītājs: Dr. habil.sc. comp. J.Artjuhs

Publikācijas 2010 – 2013 (continued)

13Armands Mezeriņš VPP IMIS Seminārs 30/10/2013 #13

Documents

Projekta apakšvirziens: