Fig. 1. Diagram of projection transform. (a) Projection in time domain; (b) center frequency slice

Fig. 2. Flow chart of phase retrieval algorithm

Fig. 3. Sketch of coordinates. (a) Observation coordinates; (b) target coordinates

Fig. 4. Diagram of three-dimensional model of a cone. (a) θ=0°; (b) θ=45°; (c) θ=90°; (d) θ=180°

Fig. 5. Flow chart of phase retrieval of reflective tomography reconstructed images

Fig. 6. Distribution of cone projections. (a) Aligned projections according to target rotation center; (b) misaligned projections with random shift

Fig. 7. Images reconstructed from projections under different conditions. (a) Δθ=1°; (b) image of projections translation when Δθ=1°; (c) Δθ=5°; (d) image of projections translation when Δθ=5°; (e) Δθ=9°; (f) image of projections translation when Δθ=9°; (g) Δθ=18°; (h) image of projections translation when Δθ=18°

Fig. 8. Spectral amplitude distribution of images reconstructed from projections under different conditions. (a) Registered spectrum when Δθ=1°; (b) unregistered spectrum when Δθ=1°; (c) registered spectrum when Δθ=5°; (d) unregistered spectrum when Δθ=5°; (e) registered spectrum when Δθ=9°; (f) unregistered spectrum when Δθ=9°; (g) registered spectrum when Δθ=18°; (h) unregistered spectrum when Δθ=18°

Fig. 9. Phase retrieval images using different initial matrices. (a),(d),(g),(j) Initial matrix images reconstructed with misalignment;(b),(e),(h),(k) random number matrix between 0 and 255; (c),(f),(i),(l) constant matrix with value 10