Installation Guide

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AIMS Fast-Scan Radar v3.22 Installation and Operations Manual

DMT, LLC • DMT-M200-311 • 06/2009

3.6 Connecting Power

3.6.1 Radar

AIMS Radar systems are all designed for 48 VDC input. Clients can optionally order 24 VDC

versions as well, but these must have a 24 volt universal communications module version

feeding it. AIMS radar systems are power conditioned, so they can be powered by four 12 volt

car or RV batteries. A volt meter and cut-off switch should be installed if running on batteries to

ensure the radar is not damaged from drooping voltage as the battery dies. The CPU will

shutdown if voltage droops significantly. If this occurs, communications to the client software

will discontinue and the radar will require cycling powering to restart the radar server software.

AIMS Fast-Scan radar systems come in a variety of ranges. For 1.5 km systems, the power pull

will be a consistent 2 AMP load, or 98 Watts when running. There is a rush pull of current

(spike) at startup, which can be high as 2.5 AMPS. Power draw and current rush increases for

further range systems. For 20 Watts, the power draw is about 150 watts (varies slightly with

options) with a 200 Watt rush at startup.

3.6.2 Cameras

Most thermal cameras use DC voltage. The range of voltage is 12 to 28 VDC for the most part.

DMT has 24 VDC supply for the purpose of feeding thermal cameras. A 12 or 15 VDC supply is

also included for powering onboard electronics. This can be routed to the wiring block for use by

the camera (see wiring block diagram for Universal Communications Module – Figure 14). The

power draw for many uncooled thermal cameras are less than 25 watts of power. Cooled thermal

cameras or multi-sensor camera products can pull considerable current. Check that the power

draw is less than 75% of the power rating on the 24 VDC power brick (printed on the brick).

Many dome security companies use 24 VAC. Optionally, the Universal Communications

Module can be fitted with a 24 VAC supply. This supply is rather large and should be able to

power any dome camera on the market that uses 24 VAC. Check the camera literature before

using this supply to ensure you have selected the right power. Some newer models of dome

cameras have switched to DC voltage, so damage can occur if the wrong selection of DC or AC

is made.

3.6.3 Universal Communications Module and Utility Enclosures

The Universal Communications Module (UCM) and the base tower utility enclosures accept 120

to 240 VAC, 40-63 Hz (auto-ranging). Power conditioning is present on every enclosure

provided by DMT, however, the power should be within 25% of the rated supply voltage.

Summary of content (31 pages)

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AIMS Fast-Scan Radar v3.22 Installation and Operations Manual 3.6 Connecting Power 3.6.1 Radar AIMS Radar systems are all designed for 48 VDC input. Clients can optionally order 24 VDC versions as well, but these must have a 24 volt universal communications module version feeding it. AIMS radar systems are power conditioned, so they can be powered by four 12 volt car or RV batteries.
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AIMS Fast-Scan Radar v3.22 Installation and Operations Manual Circuit breakers exist in all enclosures provided by DMT. These protect the radar, cameras and other equipment from faulty hookups or power problems. These are a safety measure supplied by DMT and are not a substitute for proper planning, preparation and care. 3.7 Hardware Adjustments The antenna is controlled by two motors, an azimuth motor for bearing and an elevation motor for elevation relative to the ground.
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AIMS Fast-Scan Radar v3.22 Installation and Operations Manual 3.7.1 Adjusting the Azimuth Home Pin The adjustment of the azimuth home pin positions the top of the home pin close enough for the hall-effect sensor to detect it while far enough away to prevent accidental collision between the detector and the home pin during use or transport. The adjustment is fairly simply and only requires an adjustable open end wrench and hex key (see below).
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AIMS Fast-Scan Radar v3.22 Installation and Operations Manual 3.7.2 Adjusting the Elevation Home Pin The adjustment of the elevation home pin positions the home pin directly over the hall-effect sensor while the antenna is aimed parallel to the horizon. The adjustment is fairly simply and only requires a hex key (see below).
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AIMS Fast-Scan Radar v3.22 Installation and Operations Manual 4 Server Software Although most all of the software parameters may be modified through the server interface, it is recommended that the normal use and modification of the system parameters be performed from the client interface where more comprehensive error-checking and boundary conditioning is performed to prevent the user from configuring an abnormal operating condition.
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AIMS Fast-Scan Radar v3.22 Installation and Operations Manual Additional configurable features include; • • • Configuring geo-positional devices (GPS, compass) Integrating cameras Saving/replaying captured data These configurable features are organized in an array of ‘tabs’ that provide user friendly check boxes and option lists and are described in the following section, “Server Interface Screens”. 4.
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AIMS Fast-Scan Radar v3.22 Installation and Operations Manual files are selected to replay (Replot is clicked) the option to plot data is automatically selected. The radar should always be in a stopped state before data is replayed. The El and Az text boxes provide the present Elevation and Azimuth pointing angles for the radar. The Graph area displays the currently selected graph mode (none, FFT, or line plot) and remains visible regardless of which tab is currently selected.
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AIMS Fast-Scan Radar v3.22 Installation and Operations Manual 4.2.1 Operation Tab Controls on the Operation tab are intended to be the most used controls once the application is running. In addition to controls status lights let the user know if there are problems with the communications ports, or motors. 4.2.1.1 Processing Parameters The Go and Stop buttons are used to start and stop the radar. Clicking the Go button sets a flag and puts the radar into the OperateLoop.
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AIMS Fast-Scan Radar v3.22 Installation and Operations Manual selected files the check box should be cleared and then checked again. To replay all files in a folder, check the folder checkbox. • Scripted Mode. Checking this box results in values for the min and max ranges and the elevation angle being read from a file. The values stored are indexed by the azimuth angle and are intended to allow the radar to follow an outline created for an area of interest (configurable only through the Client interface).
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AIMS Fast-Scan Radar v3.22 Installation and Operations Manual • • • Enable/disable Auto Scan Speed Required Coverage% (1-100%) Speed Steps Also displayed in this area are; • • Actual Coverage % Current Scan Rate (deg/sec). 4.2.1.4 Camera Parameters For both Camera 1 and 2, the camera tracking settings include; • • • Track to Alarm. Checking this box will enable slew-to-cue tracking of the camera to alarm detections. Zone 1.
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AIMS Fast-Scan Radar v3.22 Installation and Operations Manual Selecting this button engages a built-in test function that verifies communications with the serial communication ports 1, 2 and 3, interrogates both the azimuth and elevation motors and verifies no other errors have been reported. 4.2.1.
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AIMS Fast-Scan Radar v3.22 Installation and Operations Manual 4.2.2 Waveform Tab The Waveform Tab (see below) is used to set the basic radar waveform parameters, such as pulse width, pulse repetition rate, zero range gate (0 offset), number of range bins and number of pulses. 4.2.2.1 Waveform Settings The waveform settings include; • PRF. The pulse repetition frequency (PRF) sets the rate the pulses are generated. The Pulse Repetition Frequency (PRF) controls the maximum unambiguous velocity interval.
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AIMS Fast-Scan Radar v3.22 Installation and Operations Manual • Gain. The gain control value changes the amount of energy radiated by increasing the pulse width in nanoseconds. Also displayed in the area are; • • • SeaIOCardID. Num Handle These values are returned by the radar’s digital I/O board on initialization. If the values displayed in these boxes are not simple integers, the A/D board may not be properly setup (consult DMT for technical assistance). 4.2.2.
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AIMS Fast-Scan Radar v3.22 Installation and Operations Manual The Doppler Resolution is expressed by the number of pulses integrated by the radar in a given look direction (azimuth angle). It also sets the number of pulses used by DMT’s FFT (Fast Fourier Transform) algorithm (discussed in the Processing Section of this document). The default setting is 256 pulses and is incremented in powers of 2 (i.e., 2n) steps.
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AIMS Fast-Scan Radar v3.22 Installation and Operations Manual 4.2.3 Networking Tab For the most part, this is an informational tab that may be used to check the operational status of the equipment. There are only two settable features here, the communications port assignment for Serial Ports A and B (default ports for Camera 1 and Camera 2, respectfully)..
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AIMS Fast-Scan Radar v3.22 Installation and Operations Manual 4.2.4 Graphing Tab The Graphing Tab (below) defines the attributes that affect the display of the data processed. Additionally, this tab allows the set some installation values (height, antenna beam-width) and to apply some data filtering (lobe removals, normalization). 4.2.4.1 Select Graph Type The Graph Type options include; • • • • No Plotting. Disables graph plotting on Server. FFT Data. Selects FFT Data plotting. Line Graph.
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AIMS Fast-Scan Radar v3.22 Installation and Operations Manual the position of the radar (0 distance) while the top depicts the maximum range (max range bins). The color of the object depicts the intensity of the received signal (blue – white – red). The line graph provides a simpler display depicting the strength of the peak received signal versus distance from the radar.
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AIMS Fast-Scan Radar v3.22 Installation and Operations Manual Axis, Ymin and Ymax can be set by selecting the Man Y Scale option. It is recommended that the Plot Line Graph option be disabled when changing the values for graphing. The Line Graph options include; • • • • YMin. When Man Y Scale is enabled for Line Graph, this parameter sets the minimum Y-axis value. YMax. When Man Y Scale is enabled for Line Graph, this parameter sets the maximum Y-axis value. YTicks.
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AIMS Fast-Scan Radar v3.22 Installation and Operations Manual • Mainlobe Value. Appropriate settings for the Mainlobe Value are usually 0 or negative numbers. (Note: A negative number lowers the plotted color of the notch to black and thereby, is easier to see when looking at Doppler Plot). However, this value should be set to zero when Autolobe is being used. 4.2.4.
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AIMS Fast-Scan Radar v3.22 Installation and Operations Manual • • Range Max. Sets maximum distance for detection (in bins) ElAng Cov Adj. Sets offset adjustment for antenna elevation.
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AIMS Fast-Scan Radar v3.22 Installation and Operations Manual 4.2.5 DSP Tab The DSP Tab (shown below) provides the user the ability to affect changes to the digital signal processing functions performed on the received signal. 4.2.5.1 Motion Compensation When enabled, the software corrects for any detected motion of the radar (vehicle) itself. Motion compensation parameters include; • Enable M Comp. Enables motion compensation.
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AIMS Fast-Scan Radar v3.22 Installation and Operations Manual 4.2.5.2 A/D Sample Rate The A/D Sample Rate is set automatically based on the Radar Range selection to allow the best range resolution while maintaining full coverage for the maximum range selected. The A/D board may be configured to sample data at various frequencies; • • • • • 100 MHz 50 MHz 25 MHz 12.5 MHz 6.
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AIMS Fast-Scan Radar v3.22 Installation and Operations Manual • Decimate Data. 4.2.5.4 Smoothing Filter The smoothing filters are used to average out spurious signals from legitimate detections and may be applied across both the time domain (across pulses) and spatially (across range). The smoothing filter options include; • • Average IQ across pulses. When enabled, this function averages the raw IQ values across successive pulses (defined by the IQ to Average value).
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AIMS Fast-Scan Radar v3.22 Installation and Operations Manual • Step Ramp in Range. o Beginning Range. o Ending Range o Percent Ramp functions lower the signal strength to levels below alarm thresholds. The Beginning Range indicates the first range bin for which the function is applied and the Ending Range indicates the final range bin. The Ramp Percent represents that maximum percentage applied to the measured magnitude (signal strength).
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AIMS Fast-Scan Radar v3.22 Installation and Operations Manual 4.2.5.8 Auto Lobe Report If Autolobe R/F is enabled (Graphing Tab), the auto lobe information is output here. The first value (on left) reports the frequency index of the primary autolobe. The second value represents the frequency index of the next highest autolobe detected.
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AIMS Fast-Scan Radar v3.22 Installation and Operations Manual 4.2.6 Files Tab The Files Tab is shown below. The configurable parameters in this tab include; • • • • Files being plotted. When the Replay Mode is enabled (Operations Tab) this field shows the name of the files that contains the data being replayed. Max Range Bin Points File. This field contains the name of the files where data is currently being saved in. Data Directory.
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AIMS Fast-Scan Radar v3.22 Installation and Operations Manual 4.2.7 Detection Tab The detection tab options include; • • • • Detections Broadcast. Enables the broadcast of detections. Bcst Interval. Sets the broadcast interval on each dwell, or on a specific time interval. Speed Threshold. Sets a maximum speed threshold to reduce reported detection activity. The Use Speed Threshold is an option that can be used to focus on targets of interest.
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AIMS Fast-Scan Radar v3.
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AIMS Fast-Scan Radar v3.22 Installation and Operations Manual 4.2.8 Motor Control Tab Antenna movement and position can be controlled using the commands on the Motors tab. This is primarily intended for use during initial setup, sensor tuning, and troubleshooting. When in position mode the radar can be moved to a specific location (azimuth and elevation) by clicking on the map. To operate in this mode select the Move Radar to Point on Map check box and simply click on the map.
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AIMS Fast-Scan Radar v3.22 Installation and Operations Manual (Upr) limit continuously until Stop Scan is clicked. Scan limits should be entered using negative angles so that the minimum scan angle is always less than the maximum. For example, to scan from 350 degrees to 20 degrees enter -10 to 20 for the minimum and maximum scan limits respectively. The commands; Stop Motor, Get State, and Reset Motor were added for safety. The Stop Motor command will send an immediate stop command to the motor.
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AIMS Fast-Scan Radar v3.22 Installation and Operations Manual using these commands you should consult with a certified DMT installer or DMT technical representative.