Forwardfiring - 3DHD

What you need here is 3DHD!

An all-new Radar platform with the designation UMRR-0C introduces a leap in traffic Radar sensor performance in mainly two aspects: resolution and range. 

Range is of importance for advance detection, of course. UMRR-0C now pushes the limit up to 500m.

Separationcounts where many vehicles are closely spaced, i.e. in multi-lane scenarios with dense traffic, like traffic jams, stop-and-go traffic and busy intersections.

UMRR-0C features a technology which was never available before for traffic Radar sensors: 2DHD and 3DHD. For each reflector, there is atrue measurement of range, Doppler and angle, just like it is the case for the UMRR-0A sensor family.

However, UMRR-0C can now accomplish range gate specific and even angular gate specific detection of moving and optionally even stationary vehicles. In each of these gates a separate detection is accomplished. The attached picture explains the principle.

The UMRR-0C platform features from the start 2 models (types 40 and 42) and will be extended later. Other features of the new sensors are:

  • Ethernet, CAN and full duplex RS485 interface
  • Real Time Clock
  • On-Board storage

 

Videos

Traffic Radar Counting and Classification 3DHD

Traffic Radar Stop Plus Advance 3DHD

3D Object Tracking Radar

Smartmicro Radar sensors represent the leading 3D object tracking technology today. 3D means here that parameters range, angle (position) and speed (speed vector) are precisely measured.

For UMRR-0A, the patented FMSK Radar principle allows real time direct measurement of all reflectors simultaneously even in complex situations, typically more than 20 times per second. As a result all objects will be reliably detected with excellent precision for position, speed vector and lane index.

For UMRR-0C a further improved frequency modulation is applied, allowing 3D measurement and 3DHD vehicle separation capability.

Measurement Accuracy and Vehicle Separation Capability

To reliably detect traffic, two things are necessary:  
a) Detect vehicles and measure position, speed vector, lane index and other parameters. Measurement accuracy is of importancen the (usual) traffic scenario many vehicles are in the field of view, hence the radar must be able to detect (separate) them all and measure the abovementioned parameters of all of them separately.      
Good separation capability is the second important property.

The best radar will therefor have both the best measurement accuracy and the optimum separation capability

Side Firing with Separation in Range

Summary:

  • Range measurement: Good.
  • Range separation: Good.
  • Speed measurement: Poor.
  • Speed separation: Not available.

Traditional side firing traffic counting Radars provide measurement and separation of only one parameter: range. This is because of the side firing priciple, where any object is illuminated using a very narrow beam. Only for a minimum amount of time - when passing through the narrow beam - a vehicle can be detected. This is a very short time, and it even depends on the vehicle's speed.  No reliable speed measurement is possible, no matter if the Radar has one or two beams. So-called "HD" side firing radars have good separation in range but nevertheless are missing separation in speed by design.

Forward Firing with Separation in Speed.

Summary:

  • Range measurement: Good. 
  • Range separation: Not avaliable.
  • Speed measurement: Good.
  • Speed separation: Good.

 

The patented Smartmicro 2G2G FMSK technology provides excellent position, speed vector and lane position accuracy - however in dense traffic scenarios with many objects traveling at same Speed, some objects driving same speed may be missed.

Those radars offer improved detection coverage compared to side-fired radars. The wider beam operation has many advantages. Vehicles are inside the field of view for a much longer time, their position and speed vector can be measured with much higher quality. 
Despite these advantages most forward firing Radars today have design limits. The most prominent shortcoming is the missing range separation: Of any two cars travelling at the same speed, only one car will be detected, usually the stronger reflector dominates.

2DHD - Forward Firing with Separation in Range and Speed.

Summary:

  • Range measurement: Good. 
  • Range separation: Good.
  • Speed measurement: Good.
  • Speed separation: Good.

 

The patented Smartmicro 2DHD technology achieves unmatched detection rates and the best position, speed vector and lane position accuracy - even in dense and congested traffic situations.

As explained above, forward firing has many advantages over side firing. But Smartmicro has gone one step further than competitors and has included both true range and true speed separation capability in its latest traffic radar models. Cars traveling at the same speed can be separated by range, maximizing detection rates.

3DHD - Separation in Range, Speed and Angle.

Summary:

  • Range + Speed + Angle measurement: Best. 
  • Range + Speed + Angle separation: Best.

 

Smartmicro 3DHD technology brings the latest innovations in Radar to the traffic managment market and redefines traffic radar sensor performance.

True 3D measurement with true separation in all 3 parameters provides the best technology which is technically possible today. 3DHD sensors feature electronic transmit beam steering (E-Scan). The beam can physically be pointed in different directions. All antennas of the receiver array are wide beam, and by digital beam forming (DBF) the beam can adaptively be made wide or narrow and/or be pointed in any single direction or in all directions (up to 12 digital beams) simultaneously.