Many factors contribute to the time it takes to achieve desired accuracy from the StarFire™ receiver. Global Navigation Satellite System (GNSS) signal quality can be a contributor, especially when multipath errors occur. Multipath errors occur when satellite signals reflect off nearby surfaces. When the receiver antenna captures a multipath signal, it takes time for the receiver to filter out actual GNSS signal directly from the satellite versus reflected signal from a nearby object. This contributes to the time it takes to achieve desired accuracy.
Choke plate
The choke plate hardware in the StarFire 7500 Receiver more accurately directs GNSS signals into the antenna. With the addition of this choke plate, there is a 73 percent reduction in the time it takes to acquire an SF-RTK correction signal from previous generations of StarFire receivers. This means you have more time to be productive and get the job done quicker.
The StarFire 7500 and StarFire 7500 Integrated Receiver use an integrated terrain compensation module (TCM) to adjust the calculated machine position based on the terrain on which it is operating. The TCM adjusts for roll, pitch, and yaw motion to improve receiver and AutoTrac™ system performance when operating in challenging conditions such as hilly ground.
- TCM ensures accurate Section Control and AutoTrac guidance performance.
- TCM provides input data such as pitch to systems like the ActiveYield™ monitoring system on combines.
- The StarFire 7500 Integrated Receiver comes factory calibrated, ensuring the highest possible performance and precision.
Advanced TCM Calibration
As accuracy and repeatability continue to be more important to get to plant-by-plant accuracy, the systems in place today must evolve to enable this capability. Like the StarFire 6000 and StarFire 7000, the StarFire 7500 offers an Advanced TCM Calibration feature.
Benefits:
- Removes the guesswork out of positioning a machine and implement in the exact same spot when turning around.
- Removes the need for a level surface.
- Adds higher precision to the TCM calibration by gathering and comparing multiple points.
- Calibrates both the machine and implement receiver TCM at the same time.
How it works:
- Roughly 100.6 m (330 ft) of space is required for the calibration.
- During the calibration, speed should not exceed 6.4 km/h (4 mph).
- If an error occurs during the calibration, the operator is notified.
Advanced TCM Calibration page in the display
- Select Advanced TCM Calibration from the device list in the display.
- Follow the on-screen prompts to set up a guidance line.
- Drive the guidance line using AutoTrac automated steering from point A to point B.
- Manually turn and resume AutoTrac steering, driving the guidance line back to point A.
This completes the calibration.
Scintillation Indicator
StarFire™ 7500 has added several improvements to enhance resilience during periods of solar activity and geomagnetic storms (scintillation). A ‘Scintillation’ indicator* has been added to the ‘Health’ tab to help visualize periods of moderate to severe scintillation.
*Only available when Flex RTK is engaged. See OM for more details.
Scintillation Indicator
This indicator provides a visual for the current scintillation environment, categorized into the following levels:
- Green: No/low scintillation. Minimal impact expected, signal quality remains stable.
- Yellow: Moderate scintillation. Some signal degradation may occur; users may notice brief interruptions.
- Red: High/extreme scintillation. Likelihood of signal disruption; performance may be significantly affected.
Benefits:
- Improves operator awareness by providing a clear, color-coded view of ionospheric interference that could impact GNSS signal quality.
- Reduces downtime and confusion by helping users anticipate and interpret signal disruptions, especially during peak scintillation periods.
- Enhances system reliability by triggering alerts and diagnostics when severe scintillation is detected, ensuring proactive response.