Tallysman, manufacturer of economical high-performance GNSS antennas and related products, has introduced a through-hole mount dual-band plus L-band GNSS antenna, the TW3892.
The introduction of this antenna is a continuation of Tallysman’s expansion into broader band GNSS antennas.
The TW3892 antenna employs Tallysman’s Accutenna technology and is capable of receiving GPS L1/L2, GLONASS G1/G2, BeiDou B1, Galileo E1 plus L-band correction services (1213MHz to 1261MHz + 1525MHz to 1610MHz).
TW3892 (other radomes are available). Photo: Tallysman
This TW3892 is a precisely tuned antenna with a tight pre-filter to protect against intermodulation and saturation caused by high-level cellular 700 MHz and other signals.
The TW3892 antenna provides superior multipath signal rejection, a linear phase response, and a tight phase center variation (PCV) at an economical price point. It provides comparable or superior performance to higher priced dual-band GNSS antennas on the market.
The TW3892 is designed for precision agriculture, autonomous vehicles, navigation, real-time kinematic, precise point positioning and other applications where precision matters. The ability of the TW3892 to access L-Band correction services extends its utility to a wider range of applications.
The TW3892 is housed in a through-hole mount, weatherproof enclosure for permanent installations. For non-rooftop installations, L bracket or pipe mount (part numbers 23-0040-0, 23-0065-0 respectively) are available. A 100-mm ground plane is recommended for non-rooftop installations.
Do anything interesting today? Specifically, did you do something interesting involving positioning, navigation or timing (PNT)?
GPS World is always on the look-out for case studies — stories of how you, our readers, used PNT or GNSS equipment, or applied related technologies, to solve a problem. Each month in our Market Watch and Updates sections, I try to include a few case studies. We always provide news about new products or company and industry announcements, but it’s the case studies that often “bring it home” to our readers.
We’ve taken a look at thermal mapping at the South Pole and a one-man survey project on a remote tropical island, using both a UAV (unmanned aerial vehicle) and a receiver on a pole. We also share how lifeguards can use UAVs to save people who are drowning. Previously, we discussed how avalanches were being mapped and how a state transportation department was making the move to tablets for 3D mapping. We showed how UAVs could speed cell-tower recovery after floods.
So, tell us what you’re up to. We want to hear about it. With pictures. Email me at [email protected].
The mini choke ring antenna (right) with a traditionally sized antenna.
Harxon, manufacturer of high-precision antennas in China, has released a new patented mini choke ring antenna, the HX-CSX610A. Weighing less than 2 kg, the tiny antenna could be considered the next generation of reference antenna trends, Harxon said.
Harxon’s patent for the HX-CSX610A design includes its compact body, which offers flexible transportation and installation. Applications for the antenna include CORS stations, geodetic surveying and mapping, and other monitoring.
The HX-CSX610A is armed with excellent phase center symmetry and multipath suppression across all GNSS constellations, Harxon said, including GPS L1/L2/L5, GLONASS L1/L2, BDS B1/B2/B3, Galileo E1/E2/E5ab/E6 and L band.
For tracking performance, it can reach -0.5 dB at 20 degrees elevation.
An anti-jamming improvement over previous antenna is a method of combining the choke-ring structure with spatial filtering multipath signal suppression.
Hardware configurations meet IEC and GB standards. The antenna is water- and dust-proof.
Sokkia has introduced the latest addition to its GCX line of GNSS integrated receivers, the GCX3, which features advanced constellation tracking, open format software compatibility and longer range base-to-rover communication.
“The GCX3 features the new second generation POST2 (precision orbital satellite technology) integrated antenna — adding BeiDou, Galileo, SBAS, QZSS, and GAGAN satellite tracking in addition to GPS and GLONASS to ensure the best positioning availability,” said Charles Rihner, vice president of the Topcon GeoPositioning Solutions Group. “Building on the success of its predecessor, the GCX2, the GCX3 offers all of the lightweight, compact and ergonomic benefits — along with centimeter-accurate positioning — now with expanded satellite tracking capabilities.”
Photo: Sokkia
The GCX3 is designed as an open-source technology receiver. “You are not locked into a specific software program for downloading and processing data with Sokkia open source technology,” said Rihner. “Whether operators use MAGNET Field, GeoPro Field, or their own custom solutions, a variety of software options are available depending on their preferences for the application.”
The receiver features radio-free RTK (real-time kinematic) operation via multi-channel, long-range Bluetooth technology. When used as a base station, one GCX3 may support up to three concurrent rovers at a range of more than 300 meters. Each receiver may be used as a base or as a rover.
“It also functions as an ideal precision network rover when combined with a cellular-enabled field controller,” Rihner said.
Higher-Accuracy Positioning to Improve GNSS Network Performance and Reliability
Trimble has introduced version 3.10 of its Pivot Platform software, a modular solution for real-time GNSS infrastructure management, ranging from a single-base GNSS continuously operating reference station (CORS) to a full real-time network (RTN), serving thousands of end-users worldwide.
Version 3.10 provides improvements to network performance and office and field productivity. The new features and capabilities include:
Galileo support provides access to five GNSS constellations — GPS, GLONASS, BeiDou, QZSS and now Galileo — allowing end-users to expect improved positioning accuracy and fix performance from the 50 percent increase of accessible satellites;
GPS L5 support utilizes all available L5 third-frequency GPS observations to enable end users to further improve field productivity;
Code Bias Calibration client and server improvements provide a higher availability of network-modeled RTK corrections to allow field users to reduce dependency on station biases;
Sparse Network supports Galileo and BeiDou. Sparse Network, a Trimble technology, enables RTN operators to achieve the benefits of a full network-processed GNSS constellation even if the network is not fully covered with multi-constellation CORS.
Dynamic Station Coordinates (DSC) module improvements minimize the impact of erroneous reference station coordinates to improve system performance.
“Trimble continues to transform the way our customers manage their real-time GNSS infrastructure by making networks more robust and easier to manage,” said Mark Richter, director of marketing for Trimble’s Advanced Positioning Division. “Accessibility to the Galileo constellation and the addition of the L5 third-frequency observations in particular, makes Trimble’s Pivot Platform significantly more versatile to improve functionality and performance for end users in the field.”
Trimble Pivot Platform version 3.10 is available now from Trimble’s Distribution Network and Trimble Sales Representatives. Customers with a valid software maintenance agreement receive the new version at no additional cost.
The U.S. National Oceanic and Atmospheric Administration (NOAA) is seeking new members for its Hydrographic Services Review Panel, a federal advisory committee that advises the NOAA administrator on the agency’s hydrographic programs, products and technology.
“We depend on the perspectives of the people who rely on NOAA maritime products, especially for safety at sea or commercial efficiency, as we plan for improvements of our navigation data, services, and products,” said Russell Callender, Ph.D., assistant NOAA administrator for the National Ocean Service. “This panel is a vital part of our information gathering process to determine future priorities.”
The panel advises NOAA on hydrographic surveying, nautical charts, tides and currents, geodetic and geospatial measurements, and coastal preparedness.
Applicants should have expertise in one or more of the following fields:
marine navigation and technology,
port administration,
marine shipping or other intermodal transportation industries,
cartography and geographic information systems,
geodesy,
physical oceanography,
coastal resource management, including coastal preparedness and emergency response,
other related scientific fields.
Applications must be received by May 30;those received after the deadline will be kept on file and may be used for future panel vacancies. Members serve four-year terms, with meetings occurring at least twice a year.
GEO Business, the London-based international showcase for the geospatial industry, has unveiled its commercial workshop program for 2017.
Featuring more than 80 workshops from 200 international exhibitors, GEO Business is expected to attract over 3,000 visitors from around the world. Held at the Business Design Centre in London on May 23-24, the workshops and exhibition are all free to attend.
Tailored specifically to equip geomatics and geospatial professionals with practical demonstrations of the latest research, services and technology in action, the 80-strong workshop line-up covers everything from automation, multi-channel GPR, topographic surveying, and wearable technology to 3D modeling and visualization, hyperspectral imaging, UAV developments and laser scanning.
“Visitors to this year’s GEO Business will be treated to our most exciting line-up of hands-on commercial workshops yet,” said show director Caroline Hobden. “They’ll enjoy opportunities to experience first-hand, ground breaking new products and services from leading industry innovators, many of which won’t be exhibiting at any other event in the U.K. this year. Being able to compare what’s on offer in the market, and get advice and inspiration to ensure you make the best decisions for your business, is what makes GEO Business such an invaluable experience to the thousands of visitors that attend every year.” The full line-up is now online.
Workshop highlights include:
Next-generation condition reporting and assessment using artificial intelligence and robotics as a service: Learn how these emerging and disruptive technologies can deliver far-reaching gains in productivity and capability (hosted by SCISYS UK).
Reality modeling: The capture of infrastructure assets’ as-operated conditions, by the use of simple photos or point clouds into a reality mesh (hosted by Bentley Systems International).
HERON, the wearable mobile surveying system: Indoor or outdoor applications, walking or driving configuration able to provide 3D real-time mapping, real-time localization, change detection analysis and a powerful software brain to adjust and optimize scans (hosted by Gexcel).
Using MAPublisher to create quality maps: Output to HTML5, GeoPDF and the Avenza Maps app using a wide range of GI tools in Adobe Illustrator (hosted by XYZ Maps).
NTM, the country’s most detailed tree map: Updated and upgraded. What’s changed, and who’s using it? (hosted by Bluesky International).
Ordnance Survey: Catch up with the latest news on products, services and apps.
Hyperspectral Imaging: To support design and maintenance of infrastructure corridors (hosted by Cyient).
“We’re very much looking forward to GEO Business 2017, and the opportunity to share ideas and innovations around satellite data with delegates in both our workshop session and on our stand,” said Jonathan Summer, business development director at Earth -i UK. “This is an important event on our calendar for this year.”
A few decades ago, few could have foreseen some of the technological advancements that now seem commonplace. The geospatial industry has certainly seen its share of game-changers. Applying these changes — and figuring out what’s next — is an over-arching theme at GEO Business 2017.
In addition to the workshops and presentations, the show will feature 200 exhibitors and a packed conference program of keynotes offering real-time insights into the challenges and opportunities ahead. The exhibitor list is available online.
For more information, and to register for a free ticket to attend the exhibition and workshops, visit www.geobusinessshow.com/register. Continuing Professional Development points are available at all workshops and conference sessions. Conference prices start at £15 per day.
British aerial mapping innovator Bluesky International is expanding its business into North America following the acquisition of Col-East Inc., a Massachusetts-based aerial survey company. Col-East has been mapping the Northeast United States for 65 years and will continue as Col-East International Ltd., forming the U.S. arm of Bluesky.
Founded in 1952, Col-East has a long-established reputation for high-quality topographic mapping with particular expertise in specialized aerial surveys, such as high-precision aeronautical mapping requiring skilled analysis. Bluesky has seen an increase in the demand for specialized large-scale mapping, 3D modeling and feature extraction in recent years in the European market, and the company intends to apply these skills to the expanding U.S. market.
Bluesky has improved on aerial mapping techniques in the UK in recent years, backed by the latest digital cameras and 3D laser mapping technology. The Leicestershire-based company will not only be equipping Col-East aircraft with the latest digital aerial surveying equipment, including cameras and sensors for laser (lidar), thermal and infrared capture, but will also be building on the existing technical and experienced Col-East skill base by introducing new workflows and image-processing techniques honed in the competitive U.K. and European markets.
“Britain has a long tradition as a pioneer in mapping techniques, and the Bluesky team was behind the creation of what was the world’s first nationwide high-resolution aerial photo map, created back in 1998,” said Rachel Tidmarsh, managing director of Bluesky International Ltd. “Since then, we have developed new systems and techniques that are underpinning advances in environmental and 3D mapping, and we will be introducing these advancements to the U.S. market with the acquisition of Col-East.”
As well as topographical mapping and aeronautical work, Col-East offers a range of aerial imaging services such as the production of terrain models, orthophotos and volumetrics, providing cost-effective mapping solutions from estates to development sites and complex transportation corridors.
Col-East owns a huge archive of aerial photography that has been captured over many years and dates, back to 1946. Col-East will gain immediate access to Bluesky’s proprietary technology used in the development of some ground-breaking derived products, including 3D building modeling, tree mapping, air quality mapping and state-wide solar power potential mapping. Products will also be available to purchase through the new Col-East online Mapshop, which will be launched soon.
“It’s a very exciting time for Col-East,” said Mark Thaisz owner and general manager at Col-East. “Bluesky is bringing significant investment, new technology and added resources that will allow the business to expand freely. Already we’ve equipped our aircraft with a new Vexcel UltraCam Eagle survey camera which offers high accuracy and unsurpassed clarity to bring a whole new edge to the aerial survey market in New England.”
Written for professional users of GPS systems and data
GNSS Survey & Engineering: Handbook for Surveyors and Survey Engineers, by Huibert-Jan Lekkerkerk, provides the professional GPS user with enough background to understand and correct the operation of satellite navigation equipment in general, and GPS in particular. The book is based on lectures the author has written for the Geomares Education Skilltrade course in hydrographic surveying as well as a series of articles on satellite navigation systems. ISBN/EAN: 978-90-825818-2-9, 236 pages.
Future-proof system tracks currentand planned constellations
Topcon MR-2 GNSS receiver.
The MR-2 modular GNSS receiver system combines all current and planned constellation tracking with a comprehensive set of communication interfaces to service any precision application requiring high-performance real-time kinematic (RTK) positioning and heading determination. It can perform as a mobile RTK base station, marine navigation receiver, mobile mapping device and as a GNSS receiver for agricultural, industrial, military or construction applications. Using Topcon HD2 heading determination technology, the MR-2’s dual antennas compute high-performance heading and inclination determination alongside the RTK positioning engine for precise navigation and guidance applications. Communication interfaces include Ethernet, serial and CAN. It can operate without disturbances in high-vibration environments.
The Optech Galaxy T1000 reduces operating costs and improves performance
Terrain mapper
Designed to reduce operating cost,improve performance
The ALTM Galaxy T1000 combines a 1000-kHz effective ground measurement rate with Optech’s SwathTRAK technology to create a compact, efficient and versatile lidar sensor. A doubling of the laser pulse repetition frequency and an increase to its variable-terrain capability with SwathTRAK technology reduces the number of flightlines by up to 70 percent over traditional fixed field of view (FOV) sensors. SwathTRAK leverages the Galaxy’s programmable scanner by dynamically adjusting the scan FOV in real time during data acquisition, enabling constant-width data swaths and constant point density even in highly variable terrain and far fewer flightlines to collect and process.
The TomTom VIA GPS devices are available in three models: VIA 1425, VIA 1525 and VIA 1625 — 4-inch, 5-inch and 6-inch touchscreens, respectively. They offer an enhanced address search that helps drivers define destinations from the search menu or by touching a point on the map. TomTom VIA devices also offer Advanced Lane Guidance, helping drivers prepare for exits and intersections by clearly highlighting the correct driving lane for a planned route. Drivers also have the ability to update maps for the device’s lifetime at no extra charge with Lifetime Maps.
The Kahu connected car solution is designed for auto dealers, providing streamlined lot management while delivering a new finance and insurance (F&I) profit center by offering consumers a modern location tracking and stolen vehicle recovery service. Kahu provides accurate vehicle data for proactive maintenance reminders that can improve vehicle health and keep vehicles within warranty. Kahu includes an aftermarket GPS device and mobile apps for both dealers and their customers.
vPinPoint is a 3D “black box” technology for vehicles using a dashboard camera. In July 2016, Roke fitted the tech to an autonomous Toyota Prius and demonstrated how data captured via vision processing technology could be used to provide a precise 3D reconstruction following a road incident. The tech is expected to offer insurers, drivers and, in the case of autonomous vehicles, manufacturers independent evidence of what happened, leading to safer vehicles and helping build public trust in driverless vehicles. Unlike current dashcams, the technology uses computer vision algorithms to enable the precise position and orientation of any vehicle — car, bike, lorry or autonomous vehicle. This allows for near-perfect 3D reconstruction of any accident to be created even if the vehicle loses complete control.
Research and education platform offers Linux autopilot on Raspberry Pi
The Navio2 platform is being used in universities and research institutions worldwide. It has a u-blox M8N GLONASS/GPS/Beidou chip and two inertial measurement units (IMU): the InvenSense MPU9250 and an STMicroelectronics LSM9DS1 — both offering nine degrees of freedom. Other features include a barometer, servo control and a friendly programming environment. Open-source drivers and detailed tutorials are available in C++ and Python. All experimental data can be processed directly on Raspberry Pi, a tiny computer designed to teach programming. Navio2 runs Ardupilot flight stack and can operate in different flight modes including manual, stabilize, follow-me and auto.
Early identification and troubleshooting of crop issues
SenseFly’s eBee SQ long-range agricultural drone can now come paired with Agribotix’s FarmLens agricultural data-processing cloud-processing platform to make collecting and analyzing aerial data easier. The eBee SQ is built around Parrot’s Sequoia sensor, which features multispectral sensors that capture calibrated data across four distinct spectral bands and imagery in a single flight. The FarmLens Professional subscription bundled with the eBee SQ gives users the ability to perform the full crop-scouting workflow while working in the field. Users can fly large areas efficiently, capture ground-truthing images, make notes and share detailed information about trouble spots via the Agribotix Digital Scouting Report.
Topcon Positioning Group introduces Topcon ContextCapture, powered by Bentley Systems, a reality modeling software solution that will be offered with Topcon UAS (unmanned aerial systems).
The system is designed for mapping, construction and surveying professionals to quickly turn simple photographs and or point-cloud data into true-to-life, highly detailed 3D models for use throughout a project lifecycle.
“The offering will include Topcon ContextCapture Standard and Topcon ContextCapture Advanced,” said Charles Rihner, vice president of the Topcon GeoPositioning Solutions Group. “The standard package will be bundled with Falcon 8 and Sirius Basic/Pro and allows operators to process data from these UAS into textured 3D reality meshes, point clouds and orthophotos. ContextCapture Advanced allows users to process data from any UAS. It also includes ContextCapture Editor, which enables operators to take advantage of all project data by integrating reality meshes and point clouds, into infrastructure workflows. The result is access to a wide variety of reality modeling tools to help increase productivity.”
Context Capture software by Topcon.
The ContextCapture Advanced integration includes computer-aided design (CAD), inspection, GIS, civil engineering, and survey workflows on desktop and mobile devices, in multiple formats.
“This represents the next step in the Topcon and Bentley collaboration to advance the concept of constructioneering — allowing users to start from a reality-captured survey context and leverage and update their digital engineering models throughout the construction process, and finally deliver the as-built infrastructure in real time,” Rihner said.
“We are excited to bring to market this new joint offering that enables greater efficiency and productivity in the global construction market,” said Phil Christensen, Bentley vice president of reality modeling. “Our reality modeling solution for mapping, construction, and surveying professionals will enable them to quickly turn UAS imagery into engineering-ready 3D reality models that can be used immediately and updated throughout the construction lifecycle. Since we announced our constructioneering partnership last November, we see this as only one of many new integrations between Bentley and Topcon that will enable better project outcomes.”
Topcon Positioning Group is providing an update to its X-52 entry-level machine control system for excavation. The 2D system is designed to offer cost-effective indicate grade control.
“The X-52 system features the all-new MC-X1 controller, which offers compatibility with all brands and models of excavators,” said Kris Maas, director of construction product management. “Operators with limited exposure to machine control systems will find the system intuitive and very easy to use. Its reliable and rugged TS-i3 tilt sensors detect the precise positioning of the boom, stick and bucket at all times.”
The system is designed to provide a forward-thinking investment for contractors who want to enhance its capabilities in the future. “Later this year, the X-52 will be upgradeable to a full 3D system with GNSS, which allows it to expand along with business needs.
“The X-52 not only allows operators to work faster and with better accuracy, but also promotes a safer work site by keeping grade checkers out of the trenches,” Maas said.
The system is designed to pair with the GX-55 touchscreen control box to offer sunlight-readable indicate grade reference in any climate condition.
Wi-Fi for Imaging Station
Topcon also added advanced connectivity options to its DS-200i direct aiming imaging station. The DS-200i, now with Wi-Fi access, provides real-time, touchscreen video and photo imaging to capture measured positions.
“The ultra-wide 5 MP on-board camera provides photo documentation in the field and can now transmit live video using either LongLink or high-speed WLAN as an access point, which allows the FC-5000 or Windows 10 tablets to easily connect,” said Ray Kerwin, director of global surveying products.
“The addition of Wi-Fi connectivity offers convenience to the powerful video capabilities of the DS-200i. The system allows for non-prism measurements to be aimed and measured to remote objects — saving time without having to return to the tripod,” Kerwin said. “The live video allows a remote user to know exactly what is being measured.”
Additional standard features include Hybrid Positioning functionality, Xpointing technology for quick and reliable prism acquisition, TSshield telematics security and maintenance technology, and a rating of IP65 for water-resistant construction.
Hemisphere GNSS has launched two new GNSS receivers to enable better positioning for machine control applications. The new receivers are in addition to products announced earlier this week, including GradeMetrix application software and an array of compatible GNSS hardware components.
Designed for harsh construction environments, both the Vector VR1000 and the C321 base and rover (when combined with the new SiteMatrix software) are system components that empower heavy equipment manufacturers to deliver their own machine control and guidance solutions to their customers. Both also feature a powerful new web user interface.
Hemisphere GNSS made the announcements at Conexpo-Con/Agg 2017, which is taking place March 7-12 in Las Vegas, Nevada. Hemisphere GNSS is exhibiting at booth G71925.
Vector VR1000 Rugged GNSS Receiver
Vector VR1000 rugged GNSS receiver by Hemisphere GNSS. Photo: Hemisphere
Designed specifically for harsh machine-control environments, the Vector VR1000 multi-frequency, multi-GNSS receiver offers real-time kinematic (RTK) positioning and high-precision heading.
“The Vector VR1000 is our most robust GNSS receiver yet,” said Lyle Geck, product manager at Hemisphere. “The receiver offers a feature- and performance-packed combination of Athena RTK engine, Atlas L-band corrections, and excellent connectivity. With a baseline separation up to 10 meters, users can achieve heading accuracies of up to 0.01 degrees.”
The 744-channel VR1000 excels in difficult environments, tracking GPS, GLONASS, BeiDou, Galileo, QZSS and IRNSS. Its connectivity features support Ethernet, CAN, internal 400 MHz/900 MHz radio, serial, Bluetooth and Wi-Fi. It also has 12 multi-color LED indicators.
Powered by Athena GNSS engine, VR1000 provides centimeter-level RTK. Athena excels in environments where high-accuracy GNSS receivers can be used.
Integrated L-band adds support for Atlas GNSS global corrections for meter- to sub-decimeter-level accuracy while new Tracer technology helps maintain position during correction signal outages.
VR1000 also uses Hemisphere’s aRTK technology, powered by Atlas. This feature allows the receiver to operate with RTK accuracies when RTK corrections fail. If the VR1000 is Atlas-subscribed, it will continue to operate at the subscribed service level until RTK is restored.
C321 RTK Base and Rover
C321 RTK base and rover by Hemisphere GNSS. Photo: Hemisphere
Hemisphere GNSS also debuted the C321 GNSS Smart Antenna for heavy highway and site construction. When paired with the company’s SiteMetrix Site Management software, the multi-frequency, multi-GNSS C321 antenna can be used as an all-in-one construction base and rover site controller.
The C321 combines Hemisphere’s Athena GNSS engine and Atlas L-band correction technologies. The ruggedized antenna is designed for the most challenging environments and meets IP67-standard requirements.
Powered by Athena GNSS engine, the C321 provides best-in-class, centimeter-level RTK. Athena excels in virtually every environment where high-accuracy GNSS receivers can be used. Tested and proven, Athena performs with long baselines in open-sky environments, under heavy canopy, and in geographic locations experiencing significant scintillation.
Atlas GNSS Global Corrections. The C321 ships pre-configured to test-drive corrections from Hemisphere’s Atlas L-band corrections service. The bundled solution provides users worldwide with an easy way to utilize Atlas, including the worldwide H10 service offering 8 cm 95% accuracy (4 cm RMS). C321 also uses Hemisphere’s aRTK technology, powered by Atlas. This feature allows the receiver to operate with RTK accuracies when RTK corrections fail. If the C321 is Atlas-subscribed, it will continue to operate at the subscribed service level until RTK is restored.
SiteMetrix Site Management Software
Hemisphere’s SiteMetrix is a complete 3D/GNSS site management and inspection tool, implementing most grading, mining and landfill applications. SiteMetrix provides cut-and-fill information across the job site in real time, moving easily between a vehicle to a man-rover pole. SiteMetrix supports most GNSS receivers by offering a large GNSS library.
Using SiteMetrix offers easy-to-use stakeout, collection, volume computations and reporting, and as-built points. Developed as versatile software, SiteMetrix provides an incredible amount of direct import files, including DWG, DXF, TN3, GC3, LN3, TIN and GRD. With a customizable user interface, SiteMetrix can be as easy or advanced as necessary.
