NSSDCA ID: 2007-039A-06
Mission Name: KaguyaThe Lunar Radar Sounder (LRS) is a ground penetrating radar designed to investigate the geologic subsurface structure of the Moon to a few km depth. The radar is an FM/CW system transmitting in the High-Frequency (HF) band at a center frequency of 5 MHz and a swept frequency range of 2 MHz. A swept frequency signal pulse with a width of 200 microseconds is synthesized using a waveform memory and high-speed digital to analog converter and fed to a frequency amplifier to increase the power to 800 W. The pulse is transmitted through a set of two 12 m (30 m tip to tip) dipole antennas extending from opposite sides of the spacecraft. Returns from the ground are received by a second set of dipole antennas, identical but oriented orthogonally to the first set. The pulse will penetrate to several km below the lunar surface and the received echoes will have a range resolution of about 75 m. The pulses are repeated every 50 milliseconds at a sweep rate of 10 kHz/millesecond. LRS will also be used to detect plasma waves and solar and planetary radio waves from 10 Hz to 30 MHz.
Mass: 24 kg
Power (avg): 50 W
Questions and comments about this experiment can be directed to: Dr. David R. Williams
Name | Role | Original Affiliation | |
---|---|---|---|
Prof. Hiroshi Oya | General Contact | oya@ccmail.kukui-ut.ac.jp | |
Dr. Takayuki Ono | Principal Investigator | University of Tohoku | ono@stpp3.geophys.tohoku.ac.jp |