Solar Storm Detection

 Solar Storm Detection   Downloads » Solar Storm Detection Application Note  Solar storms generate magnetic field fluctuations that can be detected and measured given a high quality magnetic sensor. A magnetometer used for this application must be sensitive and stable enough to measure the variation of the magnetic fields as well as having a wide range so that spikes in the data won’t saturate the sensor. Watson Industries manufactures a fluxgate magnetometer that is well suited for this application. The FGM-301 provides all three axes of magnetic field data as analog voltages. These signals can be input to a data acquisition system to provide digital magnetic readings.   Watson Experience Watson Industries has been manufacturing fluxgate magnetometers since 1985. Applicable Products FGM-301 GCM-360   Technical Challenges During a period of increased solar activity in mid December 2006, Watson Industries set up one of its magnetometers to monitor the earth’s magnetic field. The goal of this experiment was to determine whether a Watson magnetometer FGM-301 was sensitive and stable enough to detect a solar flare and if so, to see if useful data could be collected as well. The test was successful in all respects. Figure 1. Magnetic Field Observations December 2006 – Watson FGM-301 The data shown above was collected with our Watson magnetometer FGM-301. Note that the data for all magnetometer axes (X, Y, and Z) has been normalized about zero NanoTesla. As can be observed, there were very pronounced peaks in the Watson magnetometer readings early during our test. Once the test was completed and the data was interpolated and graphed, we set about to determine whether the...

Aerospace Applications

Aerospace Applications InstrumentationControlNavigation Airborne Spectral Ground Survey   Surveys of ground locations using spectral analysis are used to analyze agricultural conditions. Analysis of the survey data provides information on the amounts of insecticide, herbicide, fertilizer, and irrigation necessary for the area. This allows these resources to be used more efficiently creating a higher yield at a lower cost. Read Full App Note »  Flight Test Instrumentation Aircraft flight testing is a part of the design evaluation and validation process for new and modified airframes. Many kinds of data, from the attitude of the aircraft to measurements of structural torsion and flight control flutter are necessary for an accurate and complete evaluation of an aircraft design. Read Full App Note » Other Applications Space Instrumentation Missile Testing Sounding Rocket High Altitude Balloon Avation: Piloting Display There is a trend in experimental aircraft instrumentation towards electronic flight information displays due to their versatility and ability to clearly provide more information in a small space. An attitude indicator of this type needs an electronic signal from a solid-state attitude and heading gyro. Read Full App Note » Avation: Aerobatic Piloting Display Gyros in aerobatic aircraft experience one of the most mechanically demanding environments. A gyro used for this application must be capable of maintaining accuracy through high G maneuvers and sustained motions. Read Full App Note » Unmanned Aerial Vehicles: Flight Control & Display Piloting an aerial vehicle remotely is a challenging task. There is no pilot in the craft to monitor its position with respect to the ground. Controlling the cost of the vehicle is important, but the cost of a losing...

Target Drone Compass System

Target Drone Compass System Downloads » Target Drone Compass App Note  Target drones require a navigation system that will provide accurate heading information to the remote pilot. A low cost, accurate and reusable magnetometer solution is needed to supply data to the digital compass system that supplements the other attitude sensors in the aircraft. Any electronic sensor package used in a target drone needs to be small in size because space in the airframe is at a premium. The device also needs to be lightweight since drones are not designed to carry much excess payload. Low power consumption is an ideal characteristic for an airborne electronic device as well. Watson Industries developed the FGM-301/99 to meet the MIS40175 U.S. Army Missile Command specifications. It provides an accurate triaxial magnetometer output while maintaining its low price. Watson Experience Watson Industries has been producing fluxgate magnetometers for target drone compass systems since 1996. Applicable Products FGM-301/99 SHR-E360 SHR-S360 SHR-360 DMS-EGP02 DMS-SGP02 Technical Challenges The primary challenges associated with this application are making a high quality heading sensor that is waterproof to 6 feet at a low cost. The price of the sensor is doubly important since target drones can sometimes be destroyed or damaged and the cost of the loss of a drone must be minimized. The heading sensor must be waterproof because the drones parachute into the sea after they are used, and the sensor could be as much as 6 feet underwater for several hours before the drone is recovered. The Watson FGM-301/99 was designed exclusively to meet and overcome these challenges. It is inexpensive, weighs less than ¼ lb.,...

Unmanned Aerial Vehicles: Control & Display

Unmanned Aerial Vehicles: Control & Display Downloads » UAV Control & Display  — Magnetometer Installation  Piloting an aerial vehicle remotely is a challenging task. There is no pilot in the craft to monitor its position with respect to the ground. Controlling the cost of the vehicle is important, but the cost of a losing an UAV due to inadequate sensors is much higher. A sensor package that can quickly and accurately deliver data on vehicle attitude and heading is crucial. A system built using solid-state gyros is favorable when considering cost and reliability. Watson Industries has several sensor packages that can provide UAV attitude data to the remote pilot. We manufacture several types of Attitude and Heading Reference Systems (AHRS) and Dynamic Measurement Systems (DMS) that can meet your requirements. Watson Experience We have produced sensors used for UAV control and display since 1988. Since that time, we have sold several configurations of products to meet our customer’s needs Applicable Products AHRS-E304 AHRS-S305 DMS-EGP02 DMS-SGP02 Technical Challenges Adequate space and a difficult magnetic environment are two challenges in the installation of an inertial sensor package for remotely piloting an aerial vehicle. The most compact solution is the Watson AHRS. This inertial sensor includes a magnetometer as its heading reference. These vehicles also have motors, relays, batteries and high current carrying conductors that create highly variable magnetic fields that can induce heading errors. Finding a mounting location that is magnetically clean is key to solving this issue. We strongly encourage you to read our magnetometer mounting location for more information on finding the best place to install your AHRS. We also provide free...

Aerobatic Piloting Display

Aerobatic Piloting Display Downloads » Aerobatic Display App  — Magnetometer Installation  Gyros in aerobatic aircraft experience one of the most mechanically demanding environments. A gyro used for this application must be capable of maintaining accuracy through high G maneuvers and sustained motions. While an attitude indicator is occasionally useful in performing aerobatics, the most important aspect is that the reliability of the sensor package is in no way impaired by their use in aerobatics. This is a safety issue since more accidents occur while in transit to and from air shows than at the shows themselves. Watson Industries has the ideal sensor package for this application. The AHRS-E304 outputs attitude, roll, pitch and yaw rate, and X, Y and Z acceleration data. This provides the attitude indicator with all the necessary information on aircraft attitude and dynamics. Watson Experience Watson Industries has been manufacturing sensor packages for attitude indicators since 1997.  Applicable Products AHRS AHRS-E304/203 AHRS-E304/182 The last two products listed are customized versions of the AHRS-E304. Click the above link for the standard product spec sheet or Email Us to get a spec sheet for these custom products. Technical Challenges Sustained dynamic maneuvers, high G’s and high rates are common during an aerobatic performance. Any sensors that are part of an aerobatic attitude indicator system must have a range that is wide enough to track all the motions involved. The heading output for the AHRS-E304 is referenced to the magnetic heading provided by a magnetic compass. This means that any extraneous magnetic fields in the vicinity will induce heading errors. Installation in an aerobatic aircraft can be difficult because of...