TY - RPRT TI - An assessment of passive microwave and millimeterwave sensors for the standoff detection of chemical agents AU - Fraser, Gerald T AU - Walker, Angela R Hight PY - 2004 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST IR 7172 DO - 10.6028/NIST.IR.7172 ER -