© Loctronix Corporation 2008, All Rights Reserved.

ASR-2300 – Multichannel SDR Module for PNT and Mobile communications

GNU Radio Conference 2013

October 1, 2013

Boston, Massachusetts

Dr. Michael B. Mathews Loctronix, Corporation

Loctronix Corporation Overview Founded in 2006, Woodinville, WA

Products / Solutions Available Q4 2013

Advanced Software Radio™ (ASR) SoOp / GNSS based navigation and simulation solutions for Military / Aerospace applications

Core Technologies

Spectral Compression Positioning™ (SCP) SoOp / GNSS Signal Processing

Doppler Aided Inertial Navigation™ (DAIN) RF/Inertial Sensor Fusion

SCP-GNSS Hybrid High Performance GNSS

Loctronix provides position sensing solutions for GPS challenged environments

Offering hybrid inertial, SoOp, GNSS positioning, navigation, and timing solutions Experts in Signals of Opportunity (SoOp) and alternative GNSS signal processing Targeting embedded applications in military, aerospace, commercial markets

Advance Software Radio™ (ASR)

SDR Waveforms (2014)

ASR-HGR, Hybrid GPS Receiver ASR-DAIN, SoOp Doppler Aided Inertial Navigation™ (DAIN) ASR-SAID, GPS Signal Assurance and Interference Detection Receiver™ ASR-SIM, Multiband SoOp/GNSS Signal Generator / Recorder

Development

ASR-2300, MIMO SDR Motion Sensing Module (Nov’13) OPEN SOURCE Hardware

ASR-2300-Device Development Kit, Embedded Applications (Q4’13)

Software Defined Radio (SDR) Products for SoOp / GNSS-Based Positioning, Navigation, and Timing Applications

ASR-2300 MIMO SDR / Motion Sensing Module

RF / Multi-Sensor Signal Processing

2 x 28 MHz Transceivers 300 MHz to 3.8 GHz Full Duplex 9 RF Paths: 6 RF inputs / 3 RF outputs (U.FL) Integrated L1 GPS and Wi-Fi Antennas Integrated 10 axis MEMS sensors (accelerometer/ gyroscope / compass / barometer) Expansion Port supports for MIMO / Data I/O

Electrical Interface

SuperSpeed USB 3.0 interface at 315 MB/s sustained data transfer Very Large Spartan-6 FPGA: 6,822 / 58 DSP slices 128 MiB RAM 5 Volts @ 1.2 A (6 W) at full utilization. 1.2 mbps UART Li-Ion Battery external connection w/charger function

Physical Specifications

9.90 x 6.61 x 0.95 cm (3.898 x 2.60 x 0.375 in) Weight ~ 48 grams (1.5 oz).

ASR -2300

ASR -2300 Housing Kit

ASR-2300 Functional Blocks

USB 3.0 SuperSpeed Controller

Cypress FX-3

FPGAXilinx

Spartan-6

Wideband RF

Transceiver#1

Accel / Gyro/ Compass

9-axisBarometer

32 bit bus

Wideband RF

Transceiver#2

L1 GPS Antenna C/A Only (1575 MHz)

Wideband RF Input #2400 MHz to 3.8 GHz

L1 GPS Input1575 MHz, +3.3 VDC

PCS / UMTS RF Input*1930 – 1990 MHz2210 to 2710 MHz

USB Battery Charger

3.6 v Li-Ion

USB 3.0 Max 315 MB/s

5V

Wideband RF I/O #1400 MHz to 3.8 GHz

Serial I/O600 kbps

Wideband RF I/O #2400 MHz to 3.8 GHz

Expansion PortMIMO / Data I/O

micro-controller

Clk

1PPM TXCO

8 bi

t I/O

DDR RAM 128 MiB

2 bi-color LEDS

4 blue LEDS

Wideband RF Input #1400 MHz to 3.8 GHz

+3.3 VDC

8-bit bus U.FL

ISM Band AntennaTx/Rx (2.4 GHz)

U.FL

U.FL

DTV (UHF) RF Input 300 MHz – 720 MHz

ISM Band RF I/O 2.4 GHz

U.FL

U.FL

U.FL

Loctronix Multi-Sensor Approach

Radio Frequency

Inertial

Environmental

Purpose Built SystemsAutonomous GNSS Outdoor (e.g. GPS)Indoor (Beacons)

Accelerometer

Gyroscope

AltimeterGravity

CompassRelative

Relative

AbsoluteSignals of OpportunityIndoor / Outdoor

Networked

Loctronix SCP

Dop

pler

Aid

ed In

ertia

l Nav

igat

ion

(DA

IN)

The Universal Positioning Sensor Solution Set

Orbital Navigation Using SDR

ASR-HGR Waveform Hybrid GPS

Combines SCP and traditional correlation technologies

Low SWaP high-performance L1/ L2 / L5, C/A / C, P(Y) channel observables

Host Components SDR Module Components

Hardware Correlators

GPS L1 Direct Down Converter

SCP P(Y)

SCP C/A

Hardware Correlators

C/A Down Sampler

Signal State Estimator

Hardware CorrelatorsSoftware

Correlators

Raw Observables

Raw Observables

Raw Observables

Observables

I/Q Samples

Navigation ProcessorObservables

Code / Carrier Observables

PNTData

Spectral Compression Positioning™ (SCP)

A non-linear operation on a broadband signal that enables extraction of amplitude, frequency, and phase information

GPS example with Delay & Multiply

Spectral compression applies a delay and multiply operation on P(Y) ranging signals. Fundamental chipping rate signals are extracted using an FFT on the Spectral Compressor output Each peak in the FFT (containing amplitude, frequency, and phase) represents a single GPS satellite Doppler frequency shift is used to uniquely identify the specific satellite given a GPS Almanac No complicated tracking loops or correlators are required

9

Spectral Compression Positioning (SCP) SWaP Advantages

1 Channel of SCP signal processing is equivalent to 16 or more correlation channels

LEO Obs.

SCP C/A LEO Hardware Simulation (Spirent Simulator)

0 500 1000 1500 2000 25001

1.2

1.4

1.6

1.8

Relative Epoch (sec)

Std.

Dev

. (m

)

RSS Position Estimate Std. Dev. (LEO)

0 500 1000 1500 2000 25000

5

10

15Satellite Visibility (LEO)

Relative Epoch (sec)

Sate

llite

Vis

ibili

ty (#

Sat

s)

Ionosphere Free Point Positioning , Predicted Accuracy < 4 m, All satellites in view (Spirent limited to maximum of 12 satellites).

SCP C/A LEO Ionosphere Free RIC Error (Spirent Simulator)

0 500 1000 1500 2000 2500-4

-2

0

2

4Radial (R) Error (est - truth)

Relative Epoch (sec)

Erro

r (m

)

Standard Deviation: 1.24 m

0 500 1000 1500 2000 2500-4

-2

0

2

4Along Track (I) Error (est - truth)

Relative Epoch (sec)

Erro

r (m

)

Standard Deviation: 1.17 m

0 500 1000 1500 2000 2500-4

-2

0

2

4Cross Track (C) Error (est - truth)

Relative Epoch (sec)

Erro

r (m

)

Standard Deviation: 1.26 m

Ionosphere Free Point Positioning Total Error < 4m (3 sigma) - Systematic Biases Removed -

SCP GEO Hardware Simulation (Spirent Simulator)

0 200 400 600 800 1000 1200 1400 1600 1800 2000-10

-8

-6

-4

-2

0

2

4

6

8

10Observed, Computed, and Matched Doppler Observables

Relative Epoch (sec)

C/A

Dopp

ler F

requ

ency

(Hz)

ObservedComputedMatched

C/A High Sensitivity: 32 seconds coherent integration

SCP Real Time Locating Systems (RTLS)

1 m radial error

SCP Time and Frequency Synchronization Fixed Wireless Applications (e.g. Femtocell)

Doppler Ranging measures the apparent velocity between the signal source and sensor. By integrating, this produces a displacement vector.

SCP Autonomous Positioning (DAIN)

Given a point of beginning (via GPS, WiFi, DTV, etc.), this technique when combined with inertial measurements produces highly accurate positioning with very low-drift error (< 2%).

Transmission

SignalSource

SignalSource

SignalSource

SCP Sensor

Δf3

Δf1

Δf2

Measured Speedand Direction

Point of Beginning

Measured Displacement

ΔX1

ΔX2

ΔX3

SCP Doppler Observables

Doppler Peak Broadening (1.5 m/s)

SCP Detected Peak (0 m/s)

Doppler Peak Shift (1.5 m/s)30

20

10

0

-10

Frequency (Hz)40200-20-40

50

40

30

20

10

0-10

Frequency (Hz)40200-20-40

42 Hz 19.5 Hz

SN

R ( d

B)

SN

R (d

B)

40

30

20

10

0

Frequency (Hz)403020100-10-20-30-40

SN

R (d

B)

ASR-DAIN Waveform Components

Application: Indoor Navigation using Signals of Opportunity

Host Components SDR Module Components

RF Front-end

SCP Cellular

3-axis Accelerometer

DAIN Processor

SCP Obs

MEP Fusion Engine

Obs

PNTData

3-axis Gyroscope

3-axis Magentometer

Pressure Sensor

Indoor Navigation Demonstration

20

Video Demonstration (click here)

Start/Finish

© Loctronix Corporation 2008, All Rights Reserved.

ASR-2300 – Multichannel SDR Module for PNT and Mobile communications

GNU Radio Conference 2013

October 1, 2013

Boston, Massachusetts

Dr. Michael B. Mathews Loctronix, Corporation