Mobile radar system
View Patent ↗A radar system that includes a gimbal and a platform secured to a frame through the gimbal is disclosed. The radar system includes an antenna rotatably supported by the platform for rotation about an axis and configured to scan a hemispherical field of view above the platform. A controller that controls the rotation of the antenna and a gyroscopic stabilizer that is secured to the platform to maintain the platform in a stable and level position during operation of the radar system and rotation of the antenna is also disclosed. A vehicle is also disclosed for traversing a geographic region with the radar system. The antenna may transmit in the X band. A telescoping mast having a first end secured to the platform and having a second end secured to the gimbal is also disclosed.
1. A radar system comprising:
a frame;
a platform;
a gimbal secured to the frame and pivotally supporting the platform;
an antenna rotatably supported by the platform for rotation about an axis and configured to scan a hemispherical field of view above the platform;
a controller for controlling the rotation of the antenna;
a gyroscopic stabilizer secured to the platform to maintain the platform in a stable and level position during operation of the radar system and rotation of the antenna;
wherein the gyroscopic stabilizer comprises a variable speed gyro and wherein the gyro controllably spins at a rotational speed to substantially stabilize the platform.
2. The radar system of claim 1 wherein the antenna transmits X band radar.
3. The radar system of claim 1 wherein the controller controls the antenna to rotationally sequentially scan portions of the hemispherical space above the radar system to thereby provide a sequence of scans and wherein the controller includes a processor executing instructions for assembling the sequence of scans into a composite scan representing the scanned portions of the hemispherical space.
4. The radar system of claim 3 further comprising gearing for varying an angle of the antenna relative to the horizon as a function of a location of the scanned portion and wherein the controller controls the gearing to control the angular position of the antenna relative to the horizon to scan portions of hemispherical space.
5. The radar system of claim 3 wherein the antenna comprises a phased array antenna, wherein the controller physically rotates the antenna such that a field of illumination of the antenna sequentially scans a plurality of sectors, and wherein, during the scanning of each sector by the antenna, the controller varies the phase of the phased array of the antenna to electronically scan the phased array within each sector being sequentially scanned simultaneously as the controller physically rotates the antenna.
6. The radar system of claim 1 further comprising a telescoping mast having a first end secured to the platform and having a second end secured to the gimbal, wherein the antenna is elevated relative to the frame in response to telescoping extension of the mast.
7. The radar system of claim 6 wherein the gyro spins at a first rotational speed during operation of the radar system with the antenna elevated, wherein the gyro spins at a second rotational speed during operation of the radar system with the antenna not elevated, and wherein the first rotational speed is greater than the second rotational speed.
8. The radar system of claim 1 further comprising a weight secured below the platform, wherein the weight is positioned to contribute to the stability of the platform.
9. A portable radar system for a geographic region comprising:
a vehicle for traversing the geographic region;
a platform;
a gimbal secured to the vehicle and pivotally supporting the platform;
an antenna rotatably supported by the platform for rotation about an axis and configured to scan a hemispherical field of view above the vehicle;
a controller for controlling the rotation of the antenna;
a gyroscopic stabilizer secured to the platform to maintain the platform in a stable and level position during operation of the radar system and rotation of the antenna;
wherein the gyroscopic stabilizer comprises a variable speed gyro and wherein the gyro controllably spins at a rotational speed to substantially stabilize the platform.
10. The radar system of claim 9 wherein the antenna transmits X band radar.
11. The radar system of claim 9 wherein the controller controls the antenna to rotationally sequentially scan portions of the hemispherical space above the radar system to thereby provide a sequence of scans and wherein the controller includes a processor executing instructions for assembling the sequence of scans into a composite scan representing the scanned portions of the hemispherical space.
12. The radar system of claim 11 further comprising gearing for varying an angle of the antenna relative to the horizon as a function of a location of the scanned portion and wherein the controller controls the gearing to control the angular position of the antenna relative to the horizon to scan portions of hemispherical space.
13. The radar system of claim 11 wherein the antenna comprises a phased array antenna, wherein the controller physically rotates the antenna such that a field of illumination of the antenna sequentially scans a plurality of sectors, and wherein, during the scanning of each sector by the antenna, the controller varies the phase of the phased array of the antenna to electronically scan the phased array within each sector being sequentially scanned simultaneously as the controller physically rotates the antenna.
14. The radar system of claim 9 further comprising a telescoping mast having a first end secured to the platform and having a second end secured to the gimbal, wherein the antenna is elevated relative to the vehicle in response to telescoping extension of the mast.
15. The radar system of claim 14 wherein the gyro spins at a first rotational speed during operation of the radar system with the antenna elevated, and wherein the gyro spins at a second rotational speed during operation of the radar system with the antenna not elevated, wherein the first rotational speed is greater than the second rotational speed.
16. The radar system of claim 9 further comprising a weight secured below the platform, wherein the weight is positioned to contribute to the stability of the platform.
17. A radar system comprising:
a frame;
a platform;
a gimbal secured to the frame and pivotally supporting the platform;
an antenna rotatably supported by the platform for rotation about an axis and configured to scan a hemispherical field of view above the platform;
a controller for controlling the rotation of the antenna;
a gyroscopic stabilizer secured to the platform to maintain the platform in a stable and level position during operation of the radar system and rotation of the antenna;
wherein the controller controls the antenna to rotationally sequentially scan portions of the hemispherical space above the radar system to thereby provide a sequence of scans and wherein the controller includes a processor executing instructions for assembling the sequence of scans into a composite scan representing the scanned portions of the hemispherical space; and
wherein the antenna comprises a phased array antenna, wherein the controller physically rotates the antenna such that a field of illumination of the antenna sequentially scans a plurality of sectors, and wherein, during the scanning of each sector by the antenna, the controller varies the phase of the phased array of the antenna to electronically scan the phased array within each sector being sequentially scanned simultaneously as the controller physically rotates the antenna.
18. The radar system of claim 17 wherein the gyroscopic stabilizer comprises a variable speed gyro and wherein the gyro controllably spins at a rotational speed to substantially stabilize the platform.
19. A radar system comprising:
a frame;
a platform;
a gimbal secured to the frame and pivotally supporting the platform;
an antenna rotatably supported by the platform for rotation about an axis and configured to scan a hemispherical field of view above the platform;
a controller for controlling the rotation of the antenna;
a gyroscopic stabilizer secured to the platform to maintain the platform in a stable and level position during operation of the radar system and rotation of the antenna;
a telescoping mast having a first end secured to the platform and having a second end secured to the gimbal, wherein the antenna is elevated relative to the frame in response to telescoping extension of the mast; and
wherein the gyroscopic stabilizer comprises a variable speed gyro, wherein the gyro spins at a first rotational speed during operation of the radar system with the antenna elevated wherein the gyro spins at a second rotational speed during operation of the radar system with the antenna not elevated, and wherein the first rotational speed is greater than the second rotational speed.
20. The radar system of claim 19 wherein the gyro controllably spins at a rotational speed to substantially stabilize the platform.