Wavetronix VDR24 Radar - Manual (Page 19)

Introduction and Overview
VDR24 Radar Detection System, Rev. 1.0 19
More detailed instructions regarding the physical placement and electrical installation of the
radar masts and sensors may be found in Section 3 - Installation and Sensor Siting
Guidelines and in Section 4 - Installing the Radar Sensors and the Communication
Cables.
2.3.2. About the SmartSensor-Rail Radar Sensor
The SmartSensor-Rail radar sensor is a sophisticated device that combines sixteen solid-state
24GHz radars into a single, rugged package. These radar arrays establish a detection footprint
that is quarter-circle shaped, measuring 90 degrees by 140 feet. The sensor is proven in
thousands of Intelligent Traffic System (ITS) applications worldwide and has been uniquely
adapted and optimized for railroad detection applications. The following figure shows the
primary features of the radar including:
2.3.2.1. Front Emitter Surface
The front of the radar sensor is aimed at the center of the crossing from an elevation of 18-22
feet to achieve an optimum detection vantage point.
2.3.2.2. Mast Riser Cable Connector
A weatherproof, avionics-class connector accepts the plug at the top end of the 7-conductor,
Mast Riser Cable. This connection links the radar sensor to the bungalow-mounted VDR24
controller.
2.3.2.3. Earth Ground Lug
The radar sensor is protected from transients induced by lighting and other sources through the
Earth Ground Lug on the rear of the radar enclosure. It is very important that this ground be
established to a solid and viable earth ground at the base of the mast.
2.3.2.4. Aiming Guide
Aiming the radar is easy due to its very wide detection footprint. But the Aiming Guide
embossed into the top and bottom of the radar sensor’s enclosure provides an easy way to
visually point the radar sensor in the proper horizontal (left/right) direction.
2.3.2.5. Multi-Axis Mounting Bracket
The mounting plate on the rear of the radar, along with the adjustable settings provided on the
mast mounting bracket provide secure, multi-axis positioning of the radar sensor head above
the crossing island detection zones.
2.3.3. SS300 SmartSensor-Rail Views and Features
Front, back, and bottom views of the SmartSensor-Rail are shown on the following page.