Korea Aerospace Research Institute

Sang Burm Ryu

Seung Hoon Lee

Sungwook Hong

Hyeon-Cheol Lee

Chul Kang

Young Jun Cho

Young Jin Won

Sang-soon Yong

Eun-Su Kang

Jeong Hwan Yang

Sang Gyu Lee

Sang Kon Lee

Jong Pyo Kim

The present invention relates to a passive microwave sounder for a satellite, having a fixed reflection plate. The passive microwave sounder for a satellite, having a fixed reflection plate includes: a motorincluding a first rotary shaftformed to extend in a progressing direction of a satellite; a first rotating reflection plateforming a predetermined angle with respect to the ground surface of a nadir direction and having a first one-side surfaceand a first other-side surface, the center of the first one-side surfacebeing coupled to and rotating with the first rotary shaft, such that the first one-side surfaceand the first other-side surfacealternately face the ground surface, and the second other-side surfacereflecting incident electromagnetic waves; an auxiliary reflection partreflecting the electromagnetic waves incident from the first other-side surfaceto a predetermined position; a reception partreceiving the electromagnetic waves reflected from the auxiliary reflection part; and a fixed reflection platefixed above the first rotating reflection plateat a predetermined angle with the ground surface and reflecting the electromagnetic waves to the first one-side surfaceor the first other-side surface

Passive microwave sounder for satellite, having fixed reflection plate

The present invention relates to an apparatus and method for generating a bidirectional chirp signal by using a phase accumulation polynomial, and the apparatus for generating a bidirectional chirp signal according to an embodiment may include an extraction unit extracting time interval information from the output of a frequency accumulator, a polynomial handling unit applying the phase accumulation polynomial to the extracted time interval information to generate a polynomial output value, and a bidirectional chirp signal output unit outputting a bidirectional chirp signal on the basis of the generated polynomial output value.

Apparatus and method for generating bidirectional chirp signal by using phase accumulation polynomial

Growing community of inventors

Daejeon, South Korea

Sang Burm Ryu