project name: final report part 1 finalreport1... · final report part 1. planar monolithics...

Introduction, Background and Design of PMI Radar Sense and Avoid System for

Small UAS* *(Unmanned Aerial Systems)

Project name: Doppler Radar

FINAL REPORT Part 1

PLANAR MONOLITHICS INDUSTRIES, INC 7311-F GROVE RD. FREDERICK, MARYLAND 21704 USA TEL: (310) 662-5019 FAX: (310) 662-1731 www. pmi-rf.com PMI CONFIDENTIAL AND PROPRIETARY 1

3DR Solo Drone with PMI Radar Sense and Avoid Model No. RSAAS-001

Various Sense and Avoid Systems:

DJI, China $999 [www.dji.com]

Panoptes, MA $500 [www.panoptesuav.com]

Intel [www.intel.com]

2 PLANAR MONOLITHICS INDUSTRIES, INC 7311-F GROVE RD. FREDERICK, MARYLAND 21704 USA TEL: (310) 662-5019 FAX: (310) 662-1731 www. pmi-rf.com

PMI CONFIDENTIAL AND PROPRIETARY

AMAZON [www.amazon.com]

Fortem DAA-R20 Radar [www.fortemtech.com]



NASA, Armstrong Flight Research Center [www.nasa.gov/centers/Armstrong/home]

Air Force Academy [usafa.af.mil]

The Microsoft RingCam [www.Microsoft.com]

American Institute of Aeronautics and Astronautics

[www.aiaa.org]



Radar electromagnetic signals with wavelength larger than hail, snow, dust particles (approximately a few mm size)

1-100 GHz

Why radar?

Sensing Glass

Sensing Branches



How it works: PMI Radar Sense and Avoid System



PMI Microwave Doppler Radar with Distributed Antenna Array

Objectives: - Small size - Inexpensive - All Weather

PMI Fly Eye Antenna Array



Where: Fd = Doppler frequency

V = Velocity of the target

Ft = Transmit frequency

c = Speed of light (3 X 108m/sec)

θ = The angle between the target moving direction and the axis of the module.

Tx

Rx

M

OS

Amplifier

Filter

A

Mixer

Oscillator

Autopilot With

adjustment of Doppler signal

threshold

If drone moving, any obstacle in radar sensor range will create Doppler signal. Threshold of Doppler signal amplitude used for adjustment of radar sensor range.

Drone

Optional Connection

to Controller

PMI Doppler Radar Sense and Avoid System



Generation of short pulses in IF module by Data link transmitter

Autopilot IF module Doppler Sensor

IF signal 20-200 mV

Logic signal 5V

765 MHz, 924-930 MHz, 2.81 GHz

Drone Radio 924-930 MHz

Low Pass Filter

Band Pass Filter

Drone Radio 924-930 MHz

Drone not transmitting

Drone transmitting



PMI NANO DRONE WITH SAAS



Display with Identification of Buried Objects

Parameters

Detection Time 8-12 hours

Drone with Radar weight 4 pounds

Ground Penetration 2 ft

Imaging Yes

Content Identification Yes

Time of Detect 1 sec

Update Frequency 10 Hz

MINE DETECTION WITH TETHERED DRONE



Non-scanning monopulse multi-beam (Fly Eye) micro radar will provide entire sky high-resolution, multi-target detection, tracking and recognition in rain, snow smoke, fire conditions; Non-scanning monopulse system allows for a dramatic increase in radar range and recognition ability by integration and smart processing of 2-3 orders more signals than any regular radar scanning system; Steering of transmitting power allows to suppress ground clutter; Detection and image resolution is determined by the processor and sampling frequency and are not limited by diffraction for small targets; Optional micro radar can be applied for obstacle avoidance, mapping, navigation, thru wall, ground penetrating, and mine detection.

SENSE AND AVOID SYSTEM FOR UAS

3DR Solo Drone with PMI Radar Sense and Avoid

Model No. RSAAS-001



project name: final report part 1 finalreport1... · final report part 1. planar monolithics...

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